Publications

2025

• Malte Hinrichs, Giulio Boniello, Dominic Schulz, Ronald Freund, Volker Jungnickel
  Multi-Gbit/s LiFi Experiments with a VCSEL TX and an Enhanced Pulsed Modulation PHY,
  IEEE Journal of Lightwave Technology , IEEE , pp. 1-15, January 2025, doi: https://ieeexplore.ieee.org/document/10858724 , Open Access

2024

• Kai Lennert Bober, Anselm Ebmeyer, Falko Dressler, Ronald Freund, Volker Jungnickel
  LiFi for Industry 4.0: Main Features, Implementation and Initial Testing of IEEE Std 802.15.13,
  IEEE Open Journal of Vehicular Technology , IEEE, ISSN: 2644-1330, vol. ( Volume: 5) , pp. 1625 - 1636, October 2024, doi: 10.1109/OJVT.2024.3481884, Open Access
• Caio Marciano Santos, Abdelrahmane Moawad, Mohammad Behnam Shariati, Robert Emmerich, Pooyan Safari, Colja Schubert, Johannes Fischer
  Experimental Dataset for Developing and Testing ML Models in Optical Communication Systems,
  Vol. 16, Issue 11, pp. G1-G10 (2024), July 2024, doi: https://doi.org/10.1364/JOCN.531788, arXiv: https://opg.optica.org/jocn/abstract.cfm?uri=jocn-16-11-G1, Open Access
• Angela Mitrovska, Pooyan Safari, Kerstin Ritter, Mohammad Behnam Shariati, Johannes Fischer
  Secure federated learning for Alzheimer's disease detection,
  Frontiers in Aging Neuroscience, vol. Volume 16, July 2024, doi: https://doi.org/10.3389/fnagi.2024.1324032
• Kai Lennert Bober, Anselm Ebmeyer, Jonathan Andree, Falko Dressler, Volker Jungnickel
  Optical Wireless for Industrial Communication: Practical Results using IEEE Std 802.15.13,
  ICC 2024, June 2024, Open Access
• Kallyan Das, Robert Elschner, Stefan Weide, Colja Schubert, Robert Mahn, Klaus Oestereich, Thomas Marynowski, Gunter Wiedemann, Frank Heine
  Demonstration of an Intradyne BPSK Communication System with a GEO Space Ground Link to the T-AOGS,
  2023 IEEE International Conference on Space Optical Systems and Applications (ICSOS), IEEE-ICSOS 2023, April 2024, doi: 10.1109/ICSOS59710.2023.10490275, arXiv: https://ieeexplore.ieee.org/abstract/document/10490275, Open Access
• Milan Deumer, Oliver Stiewe, Simon Nellen, Sebastian Lauck, Steffen Breuer, Robert Kohlhaas, Colja Schubert, Robert Elschner, Ronald Freund, Martin Schell
  Optoelectronic Heterodyne THz Receiver for 100–300 GHz Communication Links,
  IEEE Access, vol. 12, pp. 35246 - 35256, February 2024, doi: 10.1109/ACCESS.2024.3366448, Open Access

2023

• Isaac Sackey, Hidenobu Muranaka, Tomoyuki Kato, Shun Okada, Tokuharu Kimura, Yu Tanaka, Tsuyoshi Yamamoto, Gregor Ronniger, Robert Elschner, Carsten Schmidt-Langhorst, Takeshi Hoshida
  Design and Characterization of Dispersion-Tailored Silicon Strip Waveguide toward Wideband Wavelength Conversion,
  Institute of Electronics, Information and Communication Engineers (IEICE), vol. Institute of Electronics, Information and Communication Engineers (IEICE), November 2023, doi: https://search.ieice.org/offprint/opdl.php?opk=efghikmpuvxz12379ABCEHIJLMNOXZ, Open Access
• Guanxiong Zhang, Andy Schreier, Xiuze Wang, William Matthews, James Farmer, Grahame Faulkner, Steve J. Elston, Stephen M. Morris, Dominic O´Brien
  Free-Space Optical Communication Link With Liquid Crystal Beam-Steering,
  IEEE Photonics Technology Letters, vol. 35, no. 22, pp. 1199-1202 , November 2023, doi: 10.1109/LPT.2023.3308774, Open Access
• Feng Lui, James Farmer, Andy Schreier, Grahame Faulkner, Hyunchae Chun, William Matthews, Zhaoming Wang, Dominic O´Brien
  Ultra-sensitive UV solar-blind optical wireless communications with an SiPM,
  Optics Letter, vol. 48, pp. 5387-5390, October 2023, doi: 10.1364/ol.503235, Open Access
• Robert Emmerich, Carsten Schmidt-Langhorst, Colja Schubert, Ronald Freund
  Characterization of C-Band Coherent Receiver Front-ends for Transmission Systems beyond S-C-L-Band,
  IEEE Photonics Technology Letters , IEEE, vol. 35, pp. 1231 - 1234, September 2023, doi: 10.1109/LPT.2023.3312697, Open Access, Invited Paper
• Guanxiong Zhang, Andy Schreier, Chao He, Atchutananda Surampudi, Grahame Faulkner, Steve J. Elston, Dominic O´Brien, Stephen M. Morris
  Optical Beam-steering and polarization property of a liquid crystal laser,
  Proc. SPIE PC12658, vol. Liquid Crystals XXVII, PC1265805 , September 2023, doi: 10.1117/12.2676363, Open Access
• Wesley Da Silva Costa, Higor Camporez, Maria Pontes, Marcelo Segatto, Helder Rocha, Jair Silva, Malte Hinrichs, Anagnostis Paraskevopoulos, Volker Jungnickel, Ronald Freund
  Increasing the power and spectral efficiencies of an OFDM-based VLC system through multi-objective optimization,
  Journal of the Optical Society of America A, June 2023, doi: https://doi.org/10.1364/JOSAA.482525, Open Access
• Ruben S. Luis, Georg Rademacher, Benjamin J. Puttnam, Giammarco Di Sciullo, Andrea Marotta, Robert Emmerich, Nicolas Braig-Christophersen, Ralf Stolte, Fabio Graziosi, A. Mecozzi, Colja Schubert, Giuseppe Ferri, F. Achten, Pierre Sillard, Roland Ryf, Lauren Dallachiesa, Satoshi Shinada, Cristian Antonelli, Hideaki Furukawa
  Demonstration of a 15-Mode Network Node Supported by a Field-Deployed 15-Mode Fiber,
  Journal of Lightwave Technology, IEEE, vol. 41, pp. 3695 - 3703, May 2023, doi: 10.1109/JLT.2023.3276312, arXiv: https://ieeexplore.ieee.org/document/10124347, Invited Paper
• Gregor Ronniger, Isaac Sackey, Carsten Schmidt-Langhorst, Robert Elschner, Md Mahasin Khan, Hidenobu Muranaka, Tomoyuki Kato, Shun Okada, Tsuyoshi Yamamoto, Yu Tanaka, Takeshi Hoshida, Colja Schubert, Ronald Freund
  Optimization and Performance Evaluation of Single-mode SOI Waveguides for Ultra-broadband C-to-S Wavelength Conversion,
  Journal of Lightwave Technology, April 2023, doi: 10.1109/JLT.2023.3268826, Open Access
• Vegenshanti Valerian Dsilva, Isaac Sackey, Gregor Ronniger, Guillermo von Hünefeld, Binoy Chacko, Colja Schubert, Ronald Freund
  Performance Assessment of Joint Optical-Digital Nonlinearity Mitigation Schemes in Long-Haul Systems,
  IEEE Photonics Technology Letters, pp. 649-652, March 2023, doi: 10.1109/LPT.2023.3268735, Open Access
• Robin Terhaar, Jasper Rödiger, Matthias Häußler, Michael Wahl, Helge Gehring, Martin A. Wolff, Fabian Beutel, Wladick Hartmann, Nicolai Walter, Jonas Hanke, Peter Hanne, Nino Walenta, Maximilian Diedrich, Nicolas Perlot, Max Tillmann, Tino Röhlicke, Mahdi Ahangarianabhari, Carsten Schuck, Wolfram H. P. Pernice
  Ultrafast quantum key distribution using fully parallelized quantum channels,
  Optics Express, Optica Publishing Group, vol. 31, no. 2, pp. 2675-2688, January 2023, doi: 10.1364/OE.469053, arXiv: https://opg.optica.org/oe/fulltext.cfm?uri=oe-31-2-2675&id=525072, Open Access

2022

• Wesley Da Silva Costa, Higor Camporez, Malte Hinrichs, Helder Rocha, Maria Pontes, Marcelo Segatto, Anagnostis Paraskevopoulos, Volker Jungnickel, Ronald Freund, Jair Silva
  Toward AI-enhanced VLC Systems for Industrial Applications,
  Journal of Lightwave Technology, December 2022, doi: 10.1109/JLT.2022.3231791, arXiv: https://ieeexplore.ieee.org/document/9998061, Open Access
• Higor Camporez, Wesley Da Silva Costa, Maria Pontes, Marcelo Segatto, Helder Rocha, Jair Silva, Malte Hinrichs, Anagnostis Paraskevopoulos, Volker Jungnickel, Ronald Freund
  Increasing the reach of visible light communication links through constant-envelope OFDM signals,
  Optics Communications, ISSN: 0030-4018, no. 129179, December 2022, doi: 10.1016/j.optcom.2022.129179, arXiv: https://www.sciencedirect.com/science/article/abs/pii/S0030401822008264?via%3Dihub
• Matheus Ribeiro Sena, Pratim Hazarika, Caio Marciano Santos, Bruno Correia, Robert Emmerich, Mohammad Behnam Shariati, Antonio Napoli, Vittorio Curri, Wladek Forysiak, Colja Schubert, Johannes Fischer, Ronald Freund
  Advanced DSP-based Monitoring for Spatially resolved and Wavelength-dependent Amplifier Gain Estimation and Fault Location in C+L-band Systems,
  Journal of Lightwave Technology, IEEE, ISSN: 1558-2213, pp. 1-10, September 2022, doi: 10.1109/JLT.2022.3208209, arXiv: https://ieeexplore.ieee.org/document/9896153, Open Access
• Sepideh Mohammadi Kouhini, Julian Hohmann, Sreelal Maravanchery Mana, Peter Hellwig, Dominic Schulz, Anagnostis Paraskevopoulos, Ronald Freund
  All-Optical Distributed MIMO for LiFi: Spatial Diversity Versus Spatial Multiplexing,
  IEEE Access, IEEE, ISSN: 2169-3536, vol. 10, pp. 102646 - 102658, September 2022, doi: 10.1109/ACCESS.2022.3207475, Open Access
• Jean-Paul Linnartz , Carina Ribeiro Barbio Corrêa, Thiago Cunha, Eduward Tangdiongga, T. Koonen, Xiong Deng, Matthias Wendt, A. Abbo, P. J. Stobbelaar, Piotr Polak, Marcel Müller, Daniel Behnke, Marcos Martinez, Santiago Vicent, Taner Metin, Marc Emmelmann, Sepideh Mohammadi Kouhini, Kai Lennert Bober, Christoph Kottke, Volker Jungnickel
  ELIoT: Enhancing LiFi for a Next Generation Internet of Things,
  EURASIP Journal on Wireless Communications and Networking, no. 89, September 2022, doi: https://doi.org/10.1186/s13638-022-02168-6, Open Access, Invited Paper
• Takeshi Hoshida, Vittorio Curri, Lidia Galdino, David T. Neilson, Wladek Forysiak, Johannes Fischer, Tomoyuki Kato, Pierluigi Poggiolini
  Ultrawideband Systems and Networks: Beyond C+L -Band,
  Proceedings of the IEEE, IEEE, pp. 1-17, September 2022, doi: 10.1109/JPROC.2022.3202103, arXiv: https://ieeexplore.ieee.org/document/9893169, Open Access
• Geronimo Bergk, Mohammad Behnam Shariati, Pooyan Safari, Johannes Fischer
  ML-assisted QoT estimation: a dataset collection and data visualization for dataset quality evaluation,
  Journal of Optical Communications and Networking, IEEE, ISSN: 1943-0620, vol. 14, no. 3, pp. 43 - 55, March 2022, doi: 10.1364/JOCN.442733
• Gabriele Di Rosa, Robert Emmerich, Matheus Ribeiro Sena, Johannes Fischer, Colja Schubert, Ronald Freund, Andre Richter
  Characterization, Monitoring, and Mitigation of Standard C-Band Transceivers I/Q Imbalance in Multiband Systems,
  Journal of Lightwave Technology, IEEE, ISSN: 1558-2213, February 2022, doi: 10.1109/JLT.2022.3154888, arXiv: https://ieeexplore.ieee.org/document/9723008, Open Access

2021

• Geronimo Bergk, Mohammad Behnam Shariati, Pooyan Safari, Johannes Fischer
  ML-assisted QoT estimation: a dataset collection and data visualization for dataset quality evaluation,
  Journal of Optical Communications and Networking , IEEE, vol. 14, no. 3, December 2021, doi: 10.1364/JOCN.442733, arXiv: https://ieeexplore.ieee.org/document/9655768/authors#authors
• Mohammad Behnam Shariati, Luis Velasco, J.J. Pedreno-Manresa, Annika Dochhan, R. Casellas, A. S. Muqaddas, O. González de Dios, L. Luque Canto, Bodo Lent, J. E. Lopez de Vergara, S. López-Buedo, F.J. Moreno, P. Pavón, Marc Ruiz, S. Patri, A. Giorgetti, F. Cugini, A. Sgambelluri, R. Nejabati, Dimitra Simeonidou, Ralf-Peter Braun, A. Autenrieth, Jörg-Peter Elbers, Johannes Fischer, Ronald Freund
  Demonstration of latency-aware 5G network slicing on optical metro networks ,
  Journal of Optical Communications and Networking, Optical Society of America, vol. 14, no. 1, pp. A81-A90, November 2021, doi: 10.1364/JOCN.438951, arXiv: https://www.osapublishing.org/jocn/abstract.cfm?URI=jocn-14-1-A81
• Mohammad Behnam Shariati, Luis Velasco, J.J. Pedreno-Manresa, Annika Dochhan, R. Casellas, A. S. Muqaddas, O. González de Dios, L. Luque Canto, Bodo Lent, J. E. Lopez de Vergara, S. López-Buedo, F.J. Moreno, P. Pavón, Marc Ruiz, S. Patri, A. Giorgetti, F. Cugini, A. Sgambelluri, R. Nejabati, Dimitra Simeonidou, Ralf-Peter Braun, A. Autenrieth, Jörg-Peter Elbers, Johannes K. Fischer, Ronald Freund
  Demonstration of latency-aware 5G network slicing on optical metro networks,
  Journal of Optical Communications and Networking , IEEE, ISSN: 1943-0620, vol. 14, no. 1, pp. A81 - A90, November 2021, doi: 10.1364/JOCN.438951, Invited Paper
• Matheus Ribeiro Sena, Robert Emmerich, Mohammad Behnam Shariati, Caio Marciano Santos, Johannes K. Fischer, Ronald Freund
  DSP-Based Link Tomography for Amplifier Gain Estimation and Anomaly Detection in C+L-Band Systems ,
  IEEE/OPTICA Journal of Lightwave Technology , November 2021, arXiv: https://opg.optica.org/jlt/abstract.cfm?uri=jlt-40-11-3395
• Robert Emmerich, Matheus Ribeiro Sena, Robert Elschner, Carsten Schmidt-Langhorst, Isaac Sackey, Colja Schubert, Ronald Freund
  Enabling S-C-L-Band Systems with Standard C-Band Modulator and Coherent Receiver using Coherent System Identification and Nonlinear Predistortion,
  Journal of Lightwave Technology, IEEE, ISSN: 1558-2213, October 2021, doi: 10.1109/JLT.2021.3123430, arXiv: https://ieeexplore.ieee.org/document/9591326, Open Access, Invited Paper
• Sepideh Mohammadi Kouhini, Christoph Kottke, Ziyan Ma, Ronald Freund, Volker Jungnickel, Marcel Müller, Daniel Behnke, Marcos Martinez Vazquez, Jean-Paul Linnartz
  LiFi Positioning for Industry 4.0,
  IEEE Journal of Selected Topics in Quantum Electronics, vol. Volume: 27, Issue: 6, Nov.-Dec. 2021, August 2021, doi: 10.1109/JSTQE.2021.3095364, arXiv: https://ieeexplore.ieee.org/abstract/document/9479791
• Johannes Fischer
  Network Slicing for Improving Public Safety,
  5G Infrastructure PPP Trials & Pilots Brochure, May 2021
• Johannes Fischer
  Network Slicing for Improving Public Safety,
  5G Infrastructure PPP Trials & Pilots Brochure, May 2021
• Matheus Ribeiro Sena, Mustafa Sezer Erkilinc, Thomas Dippon, Mohammad Behnam Shariati, Robert Emmerich, Johannes Fischer, Ronald Freund
  Bayesian Optimization for Nonlinear System Identification and Pre-distortion in Cognitive Transmitters,
  Journal of Lightwave Technology (JLT), May 2021, doi: 10.1109/JLT.2021.3083676, arXiv: https://opg.optica.org/jlt/abstract.cfm?uri=jlt-39-15-5008
• N. Ledentsov Jr., Lukasz Chorchos, O. Makarov, V. A. Shchukin, Vladimir P. Kalosha, Jörg-R. Kropp, Christoph Kottke, Volker Jungnickel, Ronald Freund, J.P. Turkiewicz, Nikolai N. Ledentsov
  Serial Data Transmission at 224 Gbit/s Applying Directly Modulated 850 nm and 910 nm VCSELs,
  Electronic Letters, May 2021, doi: http://doi.org/10.1049/ell2.12236
• Kai Lennert Bober, Sreelal Maravanchery Mana, Malte Hinrichs, Sepideh Mohammadi Kouhini, Christoph Kottke, Dominic Schulz, Volker Jungnickel
  Distributed Multiuser MIMO LiFi Networks for Industrial Wireless Communication,
  Journal of Lightwave Technology, IEEE, pp. 3420 - 3433, May 2021, doi: 10.1109/JLT.2021.3069186
• Malte Hinrichs, Pablo Wilke Berenguer, Jonas Hilt, Peter Hellwig, Dominic Schulz, Anagnostis Paraskevopoulos, Kai Lennert Bober, Ronald Freund, Volker Jungnickel
  A Physical Layer for Low Power Optical Wireless Communications,
  IEEE Transactions on Green Communications and Networking, March 2021, doi: 10.1109/TGCN.2020.3038692

2020

• Johannes Fischer, Alessio Ferrari, Antonio Napoli, Johannes K. Fischer, Nelson Costa, Andrea D'Amico, João Pedro, Wladek Forysiak, Erwan Pincemin, Andrew Lord, Alexandros Stavdas, Juan Pedro F.-P. Gimenez, Günther Roelkens, Nicola Calabretta, Silvio Abrate, Bernd Sommerkorn-Krombholz, Vittorio Curri
  Assessment on the Achievable Throughput of Multi-Band ITU-T G.652.D Fiber Transmission Systems,
  Journal of Lightwave Technology, August 2020, vol. 38, no. 16, pp. 4279 - 4291, August 2020, doi: 10.1109/JLT.2020.2989620, Invited Paper
• Christian Schmidt, Hiroshi Yamazaki, Gregory Raybon, Peter Schvan, Erwan Pincemin, S. J. Ben Yoo, Daniel J. Blumenthal, Takayuki Mizuno, Robert Elschner
  Data Converter Interleaving: Current Trends and Future Perspectives,
  IEEE Communications Magazine, June 2020, doi: 10.1109/MCOM.001.1900683
• Felix Frey, Sebastian Stern, Johannes Fischer, Robert Fischer
  Two-Stage Coded Modulation for Hurwitz Constellations in Fiber-Optical Communications,
  Journal of Lightwave Technology, May 2020, doi: 10.1109/JLT.2020.2996365, Invited Paper
• Carlos Moises Castro Posada, Robert Elschner, Thomas Merkle, Colja Schubert, Ronald Freund
  Experimental Demonstrations of High-Capacity THz-Wireless Transmission Systems for Beyond 5G,
  IEEE Communications Magazine, 2020, doi: https://doi.org/10.1109/MCOM.001.2000306
• Farhad Arpanaei, Hamzeh Beyranvand, Nahid Ardalani, Mohammad Behnam Shariati
  Quality of Transmission Aware Routing, Modulation Level, Core, Mode, and Spectrum Assignment in Spectrally-Spatially Flexible Optical Networks,
  JOCN 2020, 2020

2019

• Shigeki Watanabe, Tomoyuki Kato, Takahito Tanimura, Carsten Schmidt-Langhorst, Robert Elschner, Isaac Sackey, Colja Schubert, Takeshi Hoshida
  Wavelength conversion using fiber cross-phase modulation driven by two pump waves ,
  Optics Express, vol. 27, no. 12, pp. 16767-16780, May 2019, doi: 10.1364/OE.27.016767, Open Access
• Pablo Wilke Berenguer, Peter Hellwig, Jonas Hilt, Dominic Schulz, Johannes Fischer, Volker Jungnickel, Gerhard Kleinpeter
  Real-Time Optical Wireless Mobile Communication with High Physical Layer Reliability,
  Journal of Lightwave Technology, ISSN: Print ISSN: 0733-8724 Electronic ISSN: 1558-2213, pp. 1-1, February 2019, doi: 10.1109/JLT.2019.2893520, Open Access, Invited Paper
• Isaac Sackey, Carsten Schmidt-Langhorst, Robert Emmerich, Robert Elschner, Tomoyuki Kato, Takahito Tanimura, Shigeki Watanabe, Takeshi Hoshida, Colja Schubert
  400-Gb/s Single-Photodiode Polarization-Agnostic Kramers-Kronig Reception of Distributedly-Aggregated Superchannel,
  Journal of Lightwave Technology , vol. 37, pp. 156-162, January 2019, doi: 10.1109/JLT.2018.2885173, Invited Paper
• Monique Düngen, Thomas Hansen, Ramona Croonenbroeck, Rüdiger Kays, Bernd Holfeld, Dennis Wieruch, Pablo Wilke Berenguer, Volker Jungnickel, Dimitri Block, Uwe Meier, Henrik Schulze
  Channel Measurement Campaigns for Wireless Industrial Automation,
  at - Automatisierungstechnik, Walter de Gruyter, vol. 67, no. 1, pp. 7-28, January 2019, doi: 10.1515/auto-2018-0052

2018

• Kai Habel, Volker Jungnickel, Philippos Assimakopoulos, Jim Zou, Jörg-Peter Elbers, Jesse Gomes
  A Converged Evolved Ethernet Fronthaul for the 5G Era,
  IEEE Journal on Selected Areas in Communications , ISSN: 0733-8716 (Print); 1558-0008 (Electronic), pp. 1-1, October 2018, doi: 10.1109/JSAC.2018.2874148, Open Access
• Dominic Schulz, Julian Hohmann, Peter Hellwig, Jonas Hilt, Christian Schmidt, Ronald Freund, Volker Jungnickel
  Outdoor Measurements Using an Optical Wireless Link for Fixed-Access Applications,
  Journal of Lightwave Technology, October 2018, doi: 10.1109/JLT.2018.2878362, Open Access
• Alexandros-Apostolos A. Boulogeorgos, Angeliki Alexiou, Thomas Merkle, Colja Schubert, Robert Elschner, Alexandros Katsiotis, Panagiotis Stavrianos, Dimitrios Kritharidis, Panteleimon-Konstantinos Chartsias, Joonas Kokkoniemi, Markku Juntti, Janne Lehtomaki, Antonio Teixeira, Francisco Rodrigues
  Terahertz Technologies to Deliver Optical Network Quality of Experience in Wireless Systems Beyond 5G,
  IEEE Communications Magazine, IEEE, ISSN: 1558-1896, vol. 56, no. 6, pp. 144-151, June 2018, doi: 10.1109/MCOM.2018.1700890
• Christian Schmidt, Christoph Kottke, Ronald Freund, Friedel Gerfers, Volker Jungnickel
  Digital-to-analog converters for high-speed optical communications using frequency interleaving: impairments and characteristics,
  Optics Express, vol. 26, no. 6, pp. 6758-6770, March 2018, doi: 10.1364/OE.26.006758, Open Access
• Christian Schmidt, Christoph Kottke, Vicky H. Tanzil, Ronald Freund, Volker Jungnickel, Friedel Gerfers
  Digital-to-Analog Converters Using Frequency Interleaving: Mathematical Framework and Experimental Verification,
  Circuits Syst Signal Process, ISSN: 1531-5878, February 2018, doi: 10.1007/s00034-018-0791-y, Open Access
• Antonio Napoli, Pablo Wilke Berenguer, Talha Rahman, Ginni Khanna, Lennart Gardian, Emilio Riccardi, Anna Chiado Piat, Stefano Calabrò, S. Dris, A. Richter, Johannes Fischer, Bernhard Spinnler
  Digital Pre-compensation Techniques Enabling High-capacity Bandwidth Variable Transponders,
  Optics Communications, vol. 409, no. 1, pp. 52-65, February 2018, doi: 10.1016/j.optcom.2017.09.062, Invited Paper
• Isaac Sackey, Carsten Schmidt-Langhorst, Robert Elschner, Tomoyuki Kato, T. Tanimura, Shigeki Watanabe, T. Hoshida, Colja Schubert
  Waveband-Shift Free Optical Phase Conjugator For Spectrally Efficient Fiber Nonlinearity Mitigation,
  JLT invited (ECOC2017 highly scored paper), January 2018, doi: 10.1109/JLT.2018.2790799, Invited Paper
• Pablo Wilke Berenguer, Dominic Schulz, Jonas Hilt, Peter Hellwig, Gerhard Kleinpeter, Johannes Fischer, Volker Jungnickel
  Optical Wireless MIMO Experiments in an Industrial Environment,
  IEEE Journal on Selected Areas in Communications, IEEE, ISSN: 0733-8716, vol. 36, no. 1, pp. 185-193, January 2018, doi: 10.1109/JSAC.2017.2774618

2017

• Z. Zheng, Felix Frey, Pablo Wilke Berenguer, Johannes Fischer
  Low-Complexity Equalization Scheme for Multicarrier Offset-QAM Systems,
  IEEE Photonics Technlogy Letters, vol. 29, no. 23, pp. 2075-2078, December 2017
• Christoph Kottke, Christoph Caspar, Volker Jungnickel, Ronald Freund, Mikel Agustin, Nikolay Ledentsov
  High Speed DMT and VCSEL Based MMF Transmission Using Pre-equalization,
  Journal of Lightwave Technology, vol. 36, no. 2, pp. 168-174, August 2017, Invited Paper
• Jasper Rödiger, Nicolas Perlot, R. Mottola, Robert Elschner, Carl-M. Weinert, O. Benson, Ronald Freund
  Numerical Assessment and Optimization of Discrete-Variable Time-Frequency Quantum Key Distribution,
  Physical Review A, vol. 95, no. 5, May 2017, doi: 10.1103/PhysRevA.95.052312
• Malte Hinrichs, Luz Fernández del Rosal, Ronald Freund, Volker Jungnickel, Christoph Kottke
  Experimental Investigation of New Fronthaul Concepts for 5G,
  Broadband Coverage in Germany, VDE, ISSN: 978-3-8007-4397-1, March 2017
• Rod Tucker, Marco Ruffini, Luca Valcarenghi, Divanilson Campelo, Dimitra Simeonidou, Liang Du, Maria-Christina Marinescu, Catherine Middleton, Shuang Yin, Tim Forde, Kevin Bourg, Eugene Dai, Ed Harstead, P. Chanclou, Hal Roberts, Volker Jungnickel, Sergi Figuerola, T. Takahara, Rajesh Yadav
  Connected OFCity: Technology Innovations for a Smart City Project,
  IEEE/OSA Journal of Optical Communications and Networking, IEEE, ISSN: 1943-0620, vol. 9, no. 2, pp. A245 - A255, February 2017, doi: 10.1364/JOCN.9.00A245, Invited Paper
• Kai Habel, Ronald Freund, Josep-M. Fàbrega, et.al
  Demonstration of Adaptive SDN Orchestration: A Real-time Congestion-aware Services Provisioning over OFDM-based 400G OPS and Flexi-WDM OCS,
  Journal of Lightwave Technology, vol. 35, no. 3, pp. 506 - 512, January 2017, doi: 10.1109/JLT.2017.2655418
• Kai Habel, Ronald Freund, Josep-M. Fàbrega
  Demonstration of Adaptive SDN Orchestration: A Real-time Congestion-aware Services Provisioning over OFDM-based 400G OPS and Flexi-WDM OCS,
  Journal of Lightwave Technology, ISSN: 0733-8724 (Print); 1558-2213 (Electronic), vol. 35, no. 3, pp. 506 - 512, January 2017, doi: 10.1109/JLT.2017.2655418, Open Access
• Tomoyuki Kato, Shigeki Watanabe, T. Tanimura, Thomas Richter, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert, T. Hoshida
  THz-Range Optical Frequency Shifter for Dual Polarization WDM Signals Using Frequency Conversion in Fibre,
  Journal of Lightwave Technology, IEEE, ISSN: 0733-8724 , vol. 35, no. 6, pp. 1267 - 1273, January 2017, doi: 10.1109/JLT.2017.2649566, Invited Paper

2016

• Alessandro Aimone, Felix Frey, Robert Elschner, I. Garcia Lopez, Gerrit Fiol, P. Rito, Marko Gruner, A. Cagri Ulusoy, D. Kissinger, Johannes Fischer, Colja Schubert, Martin Schell
  DAC-Less 32-GBd PDM-256-QAM Using Low-Power InP IQ Segmented MZM,
  IEEE Photonics Technology Letters , IEEE, ISSN: 1041-1135, vol. 29, no. 2, pp. 221 - 223, December 2016, doi: 10.1109/LPT.2016.2636364
• Saleem Alreesh, Carsten Schmidt-Langhorst, Robert Emmerich, Pablo Wilke Berenguer, Colja Schubert, Johannes Fischer
  Four-Dimensional Trellis Coded Modulation for Flexible Optical Communications,
  Journal of Lightwave Technology, IEEE, ISSN: 0733-8724, vol. 35, no. 2, pp. 152 - 158, November 2016, doi: 10.1109/JLT.2016.2632305
• I. García López, Alessandro Aimone, P. Rito, Saleem Alreesh, T. Brast, V. Höhns, Gerrit Fiol, Marko Gruner, Johannes Fischer, J. Honecker, Andreas-G. Steffan, Martin Schell, A. Awny, A. Cagri Ulusoy, D. Kissinger
  High-Speed Ultralow-Power Hybrid Optical Transmitter Module With InP I/Q-SEMZM and BiCMOS Drivers With 4-b Integrated DAC,
  IEEE Transactions on Microwave Theory and Techniques, IEEE, ISSN: 0018-9480 , vol. 64, no. 12, pp. 4598 - 4610, November 2016, doi: 10.1109/TMTT.2016.2622701
• I. Garcia Lopez, Alessandro Aimone, Saleem Alreesh, P. Rito, T. Brast, V. Höhns, Gerrit Fiol, Marko Gruner, Johannes Fischer, J. Honecker, Andreas-G. Steffan, D. Kissinger, A. Cagri Ulusoy, Martin Schell
  DAC-free Ultra-Low-Power Dual-Polarization 64-QAM Transmission at 32 GBd with Hybrid InP IQ SEMZM and BiCMOS Drivers Module,
  Journal of Lightwave Technology, IEEE, ISSN: 0733-8724 , vol. 35, no. 3, pp. 404 - 410, October 2016, doi: 10.1109/JLT.2016.2616124
• Nicolas Perlot, Michael Rohde
  Transmission between single-mode Gaussian antennas,
  Optics Express, Optical Society of America, vol. 24, no. 17, pp. 19491-19496, August 2016, doi: 10.1364/OE.24.019491
• T. Kato, T. Tanimura, T. Hoshida, Thomas Richter, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert, S. Watanabe
  Coherent-optical In-line Add/Drop of PDM Tributaries of Subcarrier Multiplexed Signals,
  IEEE PHOTONICS TECHNOLOGY LETTERS, ISSN: 1041-1135, vol. 28, no. 13, pp. 1465-1468, July 2016, doi: 10.1109/LPT.2016.2552243
• Erik Agrell, Magnus Karlsson, A. R. Chraplyvy, David J. Richardson, P.M. Krummrich, G. Winzer, Kim Roberts, Johannes Fischer, Seb J. Savory, Benjamin J. Eggleton
  Roadmap of optical communications,
  Journal of Optics, IOP Publishing Ltd, vol. 18, no. 6, p. 063002, May 2016, doi: 10.1088/2040-8978/18/6/063002, Open Access, Invited Paper
• Michela Svaluto Moreolo, Josep-M. Fàbrega, L. Nadal, F. Javier Vìlchez, Arturo Mayoral, R. Vilalta, R. Muñoz, R. Casellas, R. Martínez, M. Nishihara, T. Tanaka, T. Takahara, J.C. Rasmussen, Christoph Kottke, Michael Schlosser, Ronald Freund, Zheng Meng, S. Yan, Georgios Zervas, Dimitra Simeonidou, Y. Yoshida, K. Kitayama
  SDN-enabled Sliceable BVT Based on Multicarrier Technology for Multi-Flow Rate/Distance and Grid Adaptation,
  Journal of Lightwave Technology, vol. 34, no. 62, pp. 1616-1522, March 2016, Invited Paper
• Robert Elschner, Thomas Richter, Carsten Schmidt-Langhorst, T. Kato, T. Tanimura, S. Watanabe, Colja Schubert
  Distributed aggregation of spectrally efficient single- and dual-polarization super-channels by optical frequency conversion in fiber,
  Journal of Lightwave Technology, vol. 34, no. 2, pp. 618-625, February 2016, Invited Paper
• Moussa Ayyash, Hany Elgala, Ronald Freund, Jonas Hilt, Volker Jungnickel, Abdallah Khreishah, Thomas Little, Michael Rahaim, Dominic Schulz, Sihua Shao
  Coexistence of WiFi and LiFi Toward 5G: Concepts, Opportunities, and Challenges,
  IEEE Communications Magazine, IEEE, ISSN: 0163-6804 , vol. 54, no. 2, pp. 64 - 71, February 2016, doi: 10.1109/MCOM.2016.7402263

2015

• Pablo Wilke Berenguer, Markus Nölle, Jan Möller, Talha Raman, Antonio Napoli, Johannes Fischer, Colja Schubert
  Nonlinear Pre-Distortion of Transmitter Components,
  Journal of Lightwave Technology, December 2015, Invited Paper
• T. Roethlingshoefer, Thomas Richter, G. Onishchukov, Colja Schubert, B. Schmauss, G. Leuchs
  All-optical phase-preserving multilevel amplitude regeneration,
  Optics Express, vol. 22, no. 22, pp. 27077-27085, November 2015
• Gianluca Meloni, Marc Bohn, Huug de Waardt, Antonio D´Errico, Francesco Fresi, Antonio Napoli, Markus Nölle, Luca Poti, Danish Rafique, Talha Rahman, Nicola Sambo
  Experimental Comparison of Transmission Performance for Nyquist WDM and Time Frequency Time-Frequency Packing,
  Journal of Lightwave Technology, IEEE, vol. 33, no. 24, pp. 5261-5268, November 2015, doi: 10.1109/JLT.2015.2500608
• Sophie Lange, Marko Gruner, Christian Meuer, Martin Schell, Norman Wolf, Lei Yan
  Low Switching Voltage Mach-Zehnder Modulators Monolithically Integrated with DFB Laser for Data Transmission up to 107.4 Gb/s,
  Journal of Lightwave Technology, IEEE, vol. 34, no. 2, pp. 401 - 406, October 2015, doi: 10.1109/JLT.2015.2496426
• M. Leifgen, Robert Elschner, Nicolas Perlot, Carl-M. Weinert, Colja Schubert, O. Benson
  Practical Implementation and Evaluation of a Quantum Key Distribution Scheme Based on the Time-Frequency Uncertainty,
  Physical Review A - October 2015, vol. 92, no. 4, October 2015
• Anissa Zeghuzi, Dieter Bimberg, C.-A. Bunge, Christian Meuer, Holger Schmeckebier, Colja Schubert, Mirko Stubenrauch
  25 Gbit/s DPSK-Signal Generation using Directly Modulated Quantum-Dot SOAs,
  Applied Physics Letters 106, 213501, vol. 106, no. 21, May 2015, doi: 10.1063/1.4921785
• Johannes Fischer, Carsten Schmidt-Langhorst, Saleem Alreesh, Robert Elschner, Felix Frey, Pablo Wilke Berenguer, Lutz Molle, Markus Nölle, Colja Schubert
  Generation,Transmission and Detection of 4D Set-Partitioning QAM Signals,
  Journal of Lightwave Technology, vol. 33, no. 7, pp. 1445-1454, April 2015
• Zhixin Liu, Yong Chen, Zhihong Li, Brian Kelly, Richard Phelan, John O´Carroll, John P. Wooler, Natalie V. Wheeler, Alex-M. Heidt, Thomas Richter, Colja Schubert, Martin Becker, Francesco Poletti, Marco N. Petrovich, Shaif-ul Alam, David J. Richardson, Radan Slavík
  High-capacity directly modulated optical transmitter for 2-µm spectral region,
  Journal of Lightwave Technology (Special Issue), vol. 33, no. 7, pp. 1373-1379, April 2015, Invited Paper
• Jasper Rödiger, Nicolas Perlot, Ronald Freund
  Time-frequency QKD protocol over the FSO channel,
  9. ITG Fachkonferenz „Breitbandversorgung in Deutschland“, February 2015
• Stefan Meister, Hanjo Rhee, A. Al-Saadi, Bülent A. Franke, Sebastian Kupijai, Christoph Theiss, Hans J. Eichler, David Stolarek, H.H. Richter, Lars Zimmermann, Bernd Tillack, Mateusz Lesny, Christian Meuer, Colja Schubert, Ulrike Woggon
  High-Speed Fabry–Pérot Optical Modulator in Silicon With 3-μm Diode,
  Journal of Lightwave Technology, vol. 33, no. 4, February 2015
• Thomas Richter, Carsten Schmidt-Langhorst, Robert Elschner, Tomoyuki Kato, T. Tanimura, Shigeki Watanabe, Colja Schubert
  Coherent subcarrier processing node based on fiber-frequency-conversion and free-running lasers,
  Journal of Lightwave Technology, vol. 33, no. 3, pp. 685-693, February 2015
• Antonio Napoli, Marc Bohn, Danish Rafique, Alexandros Stavdas, Nicola SAMBO, Luca Poti, Markus Nölle, Johannes Fischer, Emilio Riccardi, Annachiara Pagano, Andrea Di Giglio, Juan-P.-F.-P. Gimenez, Michela SVALUTO MOREOLO, Josep-M. Fàbrega, Emilio Hugues-Salas, Georgios Zervas, Dimitra Simeonidou, Patricia Layec, Antonio D´Errico, Talha Rahman
  Next Generation Elastic Optical Networks: the Vision of the European Research Project IDEALIST,
  IEEE Communications Magazine, vol. 53, no. 2, pp. 163-171, February 2015
• Nicola Sambo, Piero Castoldi, Antonio D´Errico, Emilio Riccardi, Annachiara Pagano, Michela Svaluto Moreolo, Josep-M. Fàbrega, Danish Rafique, Antonio Napoli, Silvano Frigerio, Emilio Hugues-Salas, Georgios Zervas, Markus Nölle, Johannes Fischer, Andrew Lord, Juan-P.-F.-P. Gimenez
  Next Generation Sliceable Bandwidth Variable Transponder: the Vision of the European Research Project IDEALIST,
  IEEE Communications Magazine, vol. 53, no. 2, pp. 152-162, February 2015
• Isaac Sackey, Klaus Petermann, Colja Schubert, Thomas Richter, Johannes Fischer, Mahmoud Jazayerifar, Francesco Da Ros, Christophe Peucheret
  Kerr nonlinearity mitigation: mid-link spectral inversion versus digital backpropagation in 5×28-GBd PDM 16-QAM signal transmission,
  Journal of Lightwave Technology, IEEE, ISSN: 0733-8724, vol. 33, no. 9, pp. 1821 - 1827, January 2015, doi: 10.1109/JLT.2015.2393152
• Saleem Alreesh, Carsten Schmidt-Langhorst, Felix Frey, Pablo Wilke Berenguer, Colja Schubert, Johannes Fischer
  Transmission performance of 4D 128SP-QAM with forward error correction coding,
  IEEE Photonics Technology Letters, ISSN: 1941-0174 , vol. 27, no. 7, pp. 744-747, January 2015

2014

• Isaac Sackey, Francesco Da Ros, Mahmoud Jazayerifar, Thomas Richter, Christian Meuer, Markus Nölle, Lutz Molle, Christophe Peucheret, Klaus Petermann, Colja Schubert
  Kerr nonlinearity mitigation in 5x28-GBd PDM 16-QAM signal transmission over a dispersion-uncompensated link with backward-pumped distributed Raman amplification,
  Optics Express, vol. 22, no. 22, pp. 27381-27391, September 2014
• Johannes Fischer, Saleem Alreesh, Robert Elschner, Felix Frey, Markus Nölle, Carsten Schmidt-Langhorst, Colja Schubert
  Bandwidth-Variable Transceivers based on Four-Dimensional Modulation Formats,
  Journal of Lightwave Technology, vol. 32, no. 16, p. 2886, August 2014, Invited Paper
• Christoph Kottke, Johannes Fischer, Robert Elschner, Felix Frey, Jonas Hilt, Colja Schubert, Daniel Schmidt, Zifeng Wu, Berthold Lankl
  Coherent UDWDM PON with joint subcarrier reception at OLT ,
  Optics Express 2014, vol. 22, no. 14, pp. 16876-16888, July 2014
• Volker Jungnickel, Kai Habel, Michael Parker, Stuart Walker, Carlos Bock, Victor Marques, David Levi
  Software-defined Open Network Architecture for Front- and Backhaul in 5G Mobile Networks,
  Proc. International Conference on Transparent Optical Networks (ICTON), July 2014, Invited Paper
• Carl-M. Weinert, Stephan Hiegemann, Denny Hoh, Nicolas Perlot, Michael Rohde, Sonja Unger
  Taper Device for Tolerant Coupling of Free-Space Optical Beams Into Single-Mode Fiber,
  IEEE Photonics Technology Letters, vol. 26, no. 18, pp. 1843 - 1846, July 2014, doi: 10.1109/LPT.2014.2337651
• R. Muñoz, R. Vilalta, R. Casellas, R. Martínez, L.M. Contreras, I. García López, Juan-Pedro Fernandez-Palacios, O. González de Dios, S. Peng, M. Channegowda, R. Nejabati, Dimitra Simeonidou, X. Cao, N. Yoshikane, T. Tsuritani, A. Autenrieth, Michael Schlosser
  Network Virtualization,Control Plane and Service Orchestration of the ICT STRAUSS Project,
  EuCNC 2014, Bologna, Italy, July 2014
• Michela SVALUTO MOREOLO, Josep-M. Fàbrega, S. Yan, B. R. Rofoee, Y. Yan, Emilio Hugues-Salas, Y. Shu, Georgios Zervas, Dimitra Simeonidou, K. Kitayama, M. Nishihara, T. Tanaka, T. Takahara, J.C. Rasmussen, Luz Fernández del Rosal, Michael Schlosser, A. Macho Ortiz, V. López, J. P. Fernández-Palacios
  Flexible Optical Infrastructure for Ethernet Transport: Solutions and Enabling Technologies in the ICT STRAUSS Project,
  Flexible Optical Infrastructure for Ethernet Transport: Solutions and Enabling Technologies in the ICT STRAUSS Project, Bologna, Italy, July 2014
• Antonio Napoli, Markus Nölle, Danish Rafique, Johannes Fischer, Bernhard Spinnler, Talha Rahman, Mahdi M. Mezghanni, Marc Bohn
  On the next generation bandwidth variable transponders for future flexible optical systems,
  European Conference on Networks and Communications (EuCNC) 2014, June 2014
• Konstantinos Manolakis, Volker Jungnickel, Christian Oberli, Thorsten Wild, Volker Braun
  Impairments in Cooperative Mobile Networks: Models, Impact on Performance and Mitigation,
  Proc. European Wireless Conference, May 2014, Invited Paper
• Volker Jungnickel, Konstantinos Manolakis, Wolfgang Zirwas, Berthold Panzner, Volker Braun, Moritz Lossow, Mikael Sternad, Tommy Svensson
  The role of small cells, coordinated multipoint, and massive MIMO in 5G,
  IEEE Communications Magazine, vol. 52, no. 5, pp. 44-51, May 2014
• Michael Schlosser, Axel Werner, Ralph Schlenk, Tobias Jungel, Christoph Lange
  Demonstrating Energy-Efficiency Improvements in Load-Adaptive Dynamic Multilayer Optical Networks,
  ITG Konferenz Photonische Netze 2014, May 2014
• Stefan Meister, Hanjo Rhee, A. Al-Saadi, Bülent A. Franke, Sebastian Kupijai, Christoph Theiss, Hans J. Eichler, Bernd Tillack, Lars Zimmermann, Harald H. Richter, David Stolarek, Mateusz Lesny, Christian Meuer, Colja Schubert, Ulrike Woggon
  Silicon Optical Modulator with 3 µm Diode,
  IEEE Photonics Society Optical Interconnects Conference 2014, pp. 4-7, May 2014
• Thomas Richter, Markus Nölle, Felix Frey, Colja Schubert
  Generation and coherent reception of 107-GBd optical Nyquist BPSK,QPSK and 16QAM,
  IEEE Photonics Technology Letter 2014, vol. 26, no. 9, pp. 877-880, May 2014
• Péter Farkas, Ronald Freund, Roland Wessäly, Elmar Schaff
  Planung von kostenoptimierten Glasfasernetzen in Schleswig-Holstein mit FTTX-Plan,
  ITG Konferenz Breitbandversorgung für Deutschland, ITG 2014, pp. 1-2, May 2014
• Luz Fernández del Rosal, Kai Habel
  Real-time OFDMA for Flexible Optical Acess at 64 Gbit/s,
  ITG Konferenz Photonische Netze, ITG 2014, May 2014
• Volker Jungnickel, Dominic Schulz, Nicolas Perlot, Klaus-Dieter Langer, Wolfgang Stoermer
  Optical Wireless as a Low-Cost Small-Cell Backhaul Solution,
  ITG Konferenz Breitbandversorgung für Deutschland, ITG 2014, pp. 1-2, April 2014
• Luz Fernández del Rosal, Kai Habel
  Echtzeit-Signalverarbeitung für OFDM-basierte Optische Zugangsnetze,
  ITG Konferenz Breitbandversorgung für Deutschland, ITG 2014, April 2014
• Nuno Sequeira André, Hadrien Louchet, Kai Habel, A. Richter
  Analytical Formulation for SNR Prediction in DMDD OFDM-based Access Systems,
  IEEE Photonic Technology Letters, vol. 26, no. 12, pp. 1255 - 1258, April 2014, doi: 10.1109/LPT.2014.2320825
• Thomas Richter, Carsten Schmidt-Langhorst, Robert Elschner, Tomoyuki Kato, T. Tanimura, Shigeki Watanabe, Colja Schubert
  Coherent in-line substitution of OFDM subcarriers using fiber-frequency conversion and free-running lasers,
  Proc. Optical Fiber Communication Conference (OFC 2014), pp. 9-13, March 2014, postdeadline paper
• Ali Razmtouz, Kai Habel, Christoph Kottke, Christian Ruprecht
  Initial Ranging Scheme Based on Interpolated Zadoff-Chu Sequences for OFDMA-PON,
  Optics Express, vol. 22, issue 3, pp. 3669-3674, February 2014
• Fernando Rosas, Lurys Herrera, Christian Oberli, Konstantinos Manolakis, Volker Jungnickel
  Downlink performance limitations of cellular systems with coordinated base stations and mismatched precoder,
  IET Communications 2014, vol. 8, no. 1, pp. 77-82, January 2014

2013

• Liane Grobe, Anagnostis Paraskevopoulos, Dominic Schulz, F. Lassak, F. Hartlieb, Christoph Kottke, Volker Jungnickel, Klaus-Dieter Langer
  High-Speed Visible Light Communication Systems,
  IEEE Communications Magazine, vol. 51, no. 11, pp. 60-66, December 2013, Invited Paper
• Thomas Richter, R. Nouroozi, H. Suche, W. Sohler, Colja Schubert
  PPLN-waveguide based tunable wavelength conversion of QAM data within the C-Band,
  IEEE Photonics Technology Letters, vol. 25, no. 21, pp. 2085-2088, November 2013
• Klaus-Dieter Langer, Jonas Hilt, Dominic Schulz, F. Lassak, F. Hartlieb, Christoph Kottke, Liane Grobe, Volker Jungnickel, Anagnostis Paraskevopoulos
  500 Mbit/s rate-adaptive visible light communication arrived at plug and play,
  SPIE newsroom, https://spie.org/x104653.xml, November 2013, Invited Paper
• Nuno Sequeira André, Kai Habel, Hadrien Louchet, A. Richter
  Adaptive Nonlinear Volterra Equalizer for Mitigation of Chirp-induced Distortions in Cost Effective IMDD OFDM Systems,
  Optics Express, vol. 21, no. 22, pp. 26527-26532, November 2013, doi: 10.1364/OE.21.026527
• Marc Bohn, Antonio Napoli, Antonio D´Errico, Giuseppe FERRARIS, Matthias Gunkel, Felipe JIMENEZ, Juan-Pedro Fernandez-Palacios, Patricia Layec, Georgios Zervas, Noberto Amaya, Dimitra Simeonidou, Johannes Fischer, Markus Nölle, Colja Schubert, Nicola Sambo, Filippo CUGINI, Piero CASTOLDI, Michela SVALUTO MOREOLO, Josep-M. Fàbrega, Chigo OKONKWO, Huug de Waardt
  Elastic Optical Networks: the Vision of the ICT Project IDEALIST,
  Future Networks & Mobile Summit (FuNeMS) 2013, July 2013
• Mahmoud Jazayerifar, S. Warm, Robert Elschner, D. Kroushkov, Isaac Sackey, Christian Meuer, Colja Schubert, Klaus Petermann
  Performance Evaluation of DWDM Communication Systems with Fiber Optical Parametric Amplifiers,
  Journal of Lightwave Technology, vol. 31, no. 9, pp. 1454-1461, May 2013
• R.H. Derksen, U. Westergren, M. Chacinski, Colja Schubert, Heinz-Gunter Bach, R. Driad, R.E. Makon, V. Hurm, J. Li, Andreas-G. Steffan
  Cost-Efficient High-Speed Components for 100 Gigabit Ethernet Transmission on One Wavelength Only: Results of the HECTO Project,
  IEEE Communications Magazine, vol. 51, no. 5, May 2013
• S. Loquai, R. Kruglov, F. Winkler, C.-A. Bunge, B. Schmauss, E. Hartl, O. Ziemann, Kai Habel
  42-Gb/s Transmission over 1 mm Large-Core PMMA Polymer Optical Fiber,
  IEEE Photonics Technology Letters, vol. 25, no. 6, p. 602, March 2013
• Robert Elschner, Thomas Richter, T. Kato, S. Watanabe, Colja Schubert
  Distributed ultradense optical frequency-division multiplexing using fiber nonlinearity,
  Journal of Lightwave Technology (Special Issue), vol. 31, no. 4, pp. 628-633, February 2013
• Péter Farkas, Michael Schlosser, Ronald Freund
  FTTX-PLAN: Kostenoptimierte Planung von optischen Zugangsnetzen,
  VDE-Dialog, ITG-News, February 2013

2012

• Robert Elschner, Felix Frey, Christian Meuer, Johannes Fischer, Saleem Alreesh, Carsten Schmidt-Langhorst, Lutz Molle, T. Tanimura, Colja Schubert
  Experimental Demonstration of a Format-Flexible Single Carrier Coherent Receiver using Data-Aided Digital Signal Processing,
  Optics Express 20 (27), pp. 28786-28791, December 2012
• Johannes Fischer, Saleem Alreesh, T. Tanimura, Robert Elschner, Felix Frey, Christian Meuer, Lutz Molle, Carsten Schmidt-Langhorst, Colja Schubert
  Experimental Investigation of 126-Gb/s 6PolSK-QPSK Signals,
  Optics Express (ECOC 2012 special issue), vol. 20, no. 26, pp. B232-B237, December 2012
• T. Tanimura, Markus Nölle, Johannes Fischer, Colja Schubert
  Analytical results on back propagation nonlinear compensator with coherent detection,
  Optics Express (ECOC 2012 special issue), vol. 20, Issue 27, pp. 28779-28785, December 2012
• D. Puris, Carsten Schmidt-Langhorst, K. Luedge, N. Majer, E. Schoell, Klaus Petermann
  Time-domain Model of Quantum-Dot Semiconductor Optical Amplifiers for Wideband Optical Signals,
  Optics Express 20 (24), pp. 27265-27282, November 2012
• J. Li, R. Schmogrow, David Hillerkuss, P. C. Schindler, M. Nazarathy, Carsten Schmidt-Langhorst, S.-B. Ezra, I. Tselniker, C. Koos, W. Freude, Jürg Leuthold
  A self-coherent receiver for detection of PolMUX coherent signals,
  Optics Express 20 (19), pp. 21413-21433, September 2012
• Saleem Alreesh, Johannes Fischer, Markus Nölle, Colja Schubert
  Joint-Polarization Carrier Phase Estimation for PS-QPSK Signals,
  IEEE Photonics Technology Letters, vol. 24, no. 5, pp. 1282-1284, August 2012
• J. Wang, M. Kroh, Thomas Richter, A. Theurer, A. Matiss, Crispin Zawadzki, Ziyang Zhang, Colja Schubert, Andreas-G. Steffan, Norbert Grote, Norbert Keil
  Hybrid-integrated polarization diverse coherent receiver based on polymer PLC ,
  IEEE Photonics Technology Letters, no. 6269056, vol. 24, no. 19, pp. 1718-1721, August 2012, doi: 10.1109/LPT.2012.2213299
• A. Gajda, Lars Zimmermann, Mahmoud Jazayerifar, G. Winzer, H. Tian, Robert Elschner, Thomas Richter, Colja Schubert, Bernd Tillack, Klaus Petermann
  Highly efficient CW parametric conversion at 1550 nm in SOI waveguides by reverse biased p-i-n junction,
  Optics Express 20 (12), pp. 13100-13107, August 2012
• Holger Schmeckebier, Christian Meuer, Dejan Arsenijevic, Gerrit Fiol, Carsten Schmidt-Langhorst, Colja Schubert, G. Eisenstein, Dieter Bimberg
  Wide range wavelength conversion of 40-Gb/s NRZ DPSK signals using a 1.3 µm quantum dot semiconductor optical amplifier,
  IEEE Photonics Technology Letters 24 (13), pp. 1163-1165, July 2012
• A. Maziotis, D. Klonidis, Colja Schubert, R. Nejabati, J.A. Lazaro, D. Erasme, Marco Forzati, E. Tangdiongga, P.O. Hedekvist, Jürg Leuthold, A. Carena, B. Manning, Francesco Fresi, P.P. Millan, X.-Z. Qiu, A. Teixeira, J. Seoane, Christos Kouloumentas, H. Avramopoulos
  EURO-FOS: Integrating Europe’s Expertise on Photonic Subsystems in a Pan-European Photonics Network,
  SPIE Professional magazine, Issue April 2012, April 2012, doi: 10.1117/2.4201204.11, Open Access, http://spie.org/x86602.xml
• Thomas Richter, Robert Elschner, A. Gandhe, Klaus Petermann, Colja Schubert
  Parametric amplification and wavelength conversion of single- and dual-polarization DQPSK signals,
  Journal of Selected Topics in Quantum Electronics, vol. 18, Issue 2, pp. 988-995, March 2012
• Jelena Vučić, Klaus-Dieter Langer
  High-Speed Visible Light Communications: State-of-the-Art,
  Proc. Optical Fiber Communication Conference (OFC) 2012, vol. OTh3G.3, March 2012, Invited Paper
• A. Hachmeister, Markus Nölle, Lutz Molle, Ronald Freund, Michael Rohde
  Performance Comparison of MSK and QPSK Optical Long Haul DWDM Transmission with Coherent Detection,
  Optics Express, vol. 20, Issue 4, no. 3877-3882, February 2012
• Thomas Richter, E. Palushani, Carsten Schmidt-Langhorst, Reinhold Ludwig, Lutz Molle, Markus Nölle, Colja Schubert
  Transmission of single-channel 16-QAM data signals at terabaud symbol rates,
  Journal of Lightwave Technology, vol. 30, Issue 4, pp. 504-511, February 2012
• Nikolay Ledentsov, James A. Lott, Jörg-R. Kropp, Vitaly-A. Shchukin, Dieter Bimberg, Philip Moser, Gerrit Fiol, Alexey S. Payusov, Denis Molin, Gerard Kuyt, Adrian Amezcua, Leonid Y. Karachinsky, Sergey A. Blokhin, Innokenty I. Novikov, Nikolay A. Maleev, Christoph Caspar, Ronald Freund
  Progress on single mode VCSELs for data- and tele-communications,
  Proc. of SPIE 2012, vol. 8276, no. 82760K, February 2012, Invited Paper

2011

• Johannes Fischer, Lutz Molle, Markus Nölle, Dirk-Daniel Gross, Carsten Schmidt-Langhorst, Colja Schubert
  Experimental Investigation of 84-Gb/s and 112-Gb/s Polarization-Switched Quadrature Phase-Shift Keying Signals,
  Optics Express, vol. 19, no. 26, pp. B667–B672, December 2011, Invited Paper
• Danish Rafique, M. Mussolin, Jonas Mårtensson, Marco Forzati, Johannes Fischer, Lutz Molle, Markus Nölle, Colja Schubert, A.D. Ellis
  Polarization Multiplexed 16QAM Transmission Employing Modified Digital Back-Propagation,
  Optics Express, vol. 19, no. 26, pp. B805-B810, December 2011, Invited Paper
• Markus Nölle, Johannes Fischer, Lutz Molle, Carsten Schmidt-Langhorst, D.W. Peckham, Colja Schubert
  Comparison of 8×112 Gb/s PS-QPSK and PDM-QPSK Signals over Transoceanic Distances,
  Optics Express, vol. 19, no. 24, pp. 24370-24375, November 2011
• Tomoyuki Kato, Ryo Okabe, Reinhold Ludwig, Robert Elschner, Shigeki Watanabe
  Multi-stage Sequential Optical FDM of 12 x 10 Gb/s Data with 20 GHz Exact Channel Spacing Using Fiber Cross-phase Modulation with Optical Subcarrier Signals,
  Optics Express, vol. 19, Issue 26, pp. B295–B300, November 2011
• M. Bougioukos, Thomas Richter, Christos Kouloumentas, V. Katopodis, R. Harmon, D. Rogers, J. Harrison, A. Poustie, G. Maxwell, Colja Schubert, H. Avramopoulos
  Phase-incoherent DQPSK wavelength conversion using a photonic integrated circuit,
  IEEE Photonics Technology Letters, vol. 23, Issue 22, pp. 1649-1651, November 2011
• Klaus-Dieter Langer, Jelena Vučić, J.W. Walewski
  Zusatzfunktionen und Mehrwertdienste mit LED-Beleuchtung: Visible-Light Communications,
  VDI-Fachberichte 2127, pp. 185-197, November 2011, Invited Paper
• Anagnostis Paraskevopoulos, Jelena Vučić, Christoph Kottke, Luz Fernández del Rosal, Kai Habel, Klaus-Dieter Langer
  Creating an Optical Wireless Network Capable of 800 Mbit/s Using white-light LEDs ,
  SPIE Newsroom, October 2011, Open Access, Invited Paper, http://spie.org/x84327.xml?ArticleID=x84327
• M. Selmi, C. Gosset, Markus Nölle, P. Ciblat, Y. Jaouen
  Blockwise Digital Signal Processing for PolMux QAM/PSK Optical Coherent Systems,
  Journal of Lightwave Technology, vol. 29, no. 20, pp. 3070-3082, October 2011
• R. E. Makon, R. Driad, J. Rosenzweig, V. Hurm, Colja Schubert, H. Walcher, M. Schlechtweg, O. Ambacher
  Ultra-High-Speed Transmitter and Receiver ICs for 100 Gbit/s Ethernet using InP DHBTs,
  Compound Semiconductor Integrated Circuit Symposium (CSICS)Compound Semiconductor Integrated Circuit Symposium (CSICS), no. G.1, October 2011, Invited Paper
• Klaus-Dieter Langer, A. Bluschke, J. Faller
  Inhausnetze,
  VDE-Zeitschrift Technik in Bayern, pp. 17-18, September 2011, Invited Paper
• H. Hu, R. Nouroozi, Reinhold Ludwig, Carsten Schmidt-Langhorst, H. Suche, W. Sohler, Colja Schubert
  Polarization-Insensitive 320-Gb/s In-Line All-Optical Wavelength Conversion in a 320-km Transmission Span,
  IEEE Photonics Technology Letters 23 (10), no. 627-629, May 2011
• H. Hu, R. Nouroozi, Reinhold Ludwig, B. Huettl, Carsten Schmidt-Langhorst, H. Suche, W. Sohler, Colja Schubert
  Simultaneous Polarization-Insensitive Wavelength Conversion of 80-Gb/s RZ-DQPSK Signal and 40-Gb/s RZ-OOK Signal in a Ti: PPLN Waveguide,
  Journal of Lightwave Technology, vol. 29, no. 8, pp. 1092-1097, April 2011
• Christian Meuer, Carsten Schmidt-Langhorst, René Bonk, Holger Schmeckebier, Dejan Arsenijevic, Gerrit Fiol, Andrey Galperin, Jürg Leuthold, Colja Schubert, Dieter Bimberg
  80 Gb/s wavelength conversion using a quantumdot semiconductor optical amplifier and optical filtering,
  Optics Express 19 (6), pp. 5134-5142, March 2011
• Christian Meuer, Carsten Schmidt-Langhorst, Holger Schmeckebier, Gerrit Fiol, Dejan Arsenijevic, Colja Schubert, Dieter Bimberg
  40 Gb/s wavelength conversion via four-wave mixing in a quantum-dot semiconductor optical amplifier,
  Optics Express 19 (4), pp. 3788-3798, February 2011

2010

• Lars Thiele, Volker Jungnickel, Thomas Haustein
  Interference Management for Future Cellular OFDMA Systems Using Coordinated Multi-Point Transmission,
  IEICE Transactions on Communications, vol. E93-B, no. 12, December 2010, doi: 10.1587/transcom.E93.B.3228
• Jelena Vučić, Christoph Kottke, S. Nerreter, Klaus-Dieter Langer, J.W. Walewski
  513 Mbit/s Visible Light Communications Link Based on DMT-modulation of a White LED,
  IEEE/OSA Journal of Lightwave Technology, April 2010

2008

• Matthias Seimetz, Ronald Freund
  Next Generation Optical Networks Based on Higher-Order Modulation Formats, Coherent Receivers and Electronic Distortion Equalization,
  Elektrotechnik und Informationstechnik: E & I 125 (2008), vol. 125, no. 7/8, pp. 284-289, February 2008, Invited Paper

2006

• Hans-Georg Weber, Reinhold Ludwig, Sebastian Ferber, Carsten Schmidt-Langhorst, M. Kroh, V. Marembert, C. Boerner, Colja Schubert
  Ultrahigh-Speed OTDM-Transmission Technology,
  IEEE Journal of Lightware Technology, ISSN: 1558-2213 , vol. 24, no. 12, pp. 4616-4627, December 2006, Invited Paper

2024

• Robert Emmerich
  Impact of Multi-Band Transmission on Optical Signal-to-Noise Ratio Measurements,
  Summer School on Optical Communication 2024, Zürich,Switzerland, ETH Zurich, September 2024, doi: https://doi.org/10.3929/ethz-b-000694637
• In-Ho Baek, Oliver Stiewe, Jonas Gläsel, Metin Furkan Ulukan, Alexander Schindler, Felix Ganzer, Trung T. Tran, Robert Elschner, Colja Schubert, Patrick Runge, Martin Schell, Ronald Freund
  Experimental Characterization of a WR3-Coupled Photodiode Transmitter for High-Speed Terahertz Wireless Communication,
  2024 International Topical Meeting on Microwave Photonics (MWP 2024), Pisa, Italy, September 2024, doi: 10.1109/MWP62612.2024.10736276
• Robert Emmerich, Alexander Schindler, Patrick Runge, Colja Schubert, Martin Schell, Ronald Freund
  140 GBd S-C-L-Band Transmission System Enabled by TFLN Coherent Driver Modulator and InP Coherent Receiver Engine,
  Proc. of VDE European Conference on Optical Communication (ECOC), Frankfurt am Main, pp. 1-4, paper W2A.87, September 2024, arXiv: https://datacloud.hhi.fraunhofer.de/s/4SptFBbmjRxk96a
• Nicolas Braig-Christophersen, Aymeric Arnould, Robert Emmerich, Fabian Chowanek, Benjamin J. Puttnam, Juan Carlos Alvarado Zacarias, Kazuhiko Aikawa, Rodrigo Amezuca-Correa, Ruby S. B. Ospina, Hideaki Furukawa, Carsten Schmidt-Langhorst, Georg Rademacher, Colja Schubert, Ronald Freund
  Single-Carrier 2.56 Tb/s (3-mode x 128-GBd x DP-16QAM) Transmission over a 53.7 km Few Mode Fiber,
  ECOC 2024, Frankfurt am Main, September 2024, arXiv: https://datacloud.hhi.fraunhofer.de/s/ttbzyDN9RLWY6CA
• Matheus Ribeiro Sena, Robert Emmerich, Mohammad Behnam Shariati, Ralf-Peter Braun, Marc Geitz, Johannes K. Fischer, Ronald Freund
  Link Tomography: A Tool for Monitoring Optical Network and Designing Digital Twins,
  Proc. of VDE European Conference on Optical Communication (ECOC), Frankfurt am Main, pp. 1-4, [Invited],paper M3E.5, September 2024, arXiv: https://datacloud.hhi.fraunhofer.de/s/AgPmHqNNPpWcnKz
• Jonathan Andree, Sanket Khatdeo, Christian Schmidt, Markus Grözing, Tobias Tannert, Oliver Peters, Volker Jungnickel, Friedel Gerfers, Ronald Freund, Georg Rademacher
  Cascaded 4:1 AMUX-DAC Using Novel Clocking and Advanced DSP,
  European Microwave Week 2024, Paris, France, September 2024
• Malte Hinrichs, Giulio Boniello, Dominic Schulz, Ronald Freund, Volker Jungnickel
  7.75 Gbit/s LiFi Transmitter Using High-Power VCSEL Arrays,
  Fraunhofer HHI, ECOC 2024 Frankfurt am Main, September 2024, arXiv: https://datacloud.hhi.fraunhofer.de/s/HZiCJwBRK6mYd3A
• Jan Krause, Nino Walenta, Jonas Hilt, Ronald Freund
  Clock offset synchronization with sublinear complexity for quantum key distribution on low-level hardware,
  Qcrypt 2024, Vigo, Spain, September 2024
• Cristian Antonelli, A. Mecozzi, Andrea Marotta, Fabio Graziosi, Giammarco Di Sciullo, Qi Wu, D. Ri-bezzo, M. Mazur, Nicolas Fontaine, Lauren Dallachiesa, Roland Ryf, R.S. Luis, Georg Rademacher, Robert Emmerich, Colja Schubert, D. A. Shaji, T. Nakanishi, Takuji Nagashima, Pierre Sillard, D. Bacco, A. Zavatta, M. Zahidy, L.K. Oxenløwe, M. Cappelletti, D. Orsuti, Paola Parolari, A. Gatto, M. Fasano, P. Boffi, N. Sambo, A. Carena, A. Nespola, S. Guerrier, C. Dorize, Jeremie Renaudier, N. Hoghooghi, F. Quinlan
  Space-Division Multiplexed Transmission from the Lab to the Field,
  VDE, ECOC 2024, 50th European Conference on Optical Communication, VDE VERLAG GMBH Berlin , ISBN: 978-3-8007-6426-6, pp. 337-340, September 2024, doi: ieeexplore.ieee.org/document/10926387
• Angela Mitrovska, Mohammad Behnam Shariati, Johannes Fischer, Pooyan Safari
  Data Governance Framework for Telemetry Sharing,
  50th European Conference on Optical Communications (ECOC 2024), Frankfurt am Main, September 2024
• Matthias Koepp, Kai Habel, Volker Jungnickel
  Real-time Experiments towards an Automotive OFDMA Communication Bus,
  99th Vehicular Technology Conference (VTC2024-Spring), Singapore, Singapore, IEEE, July 2024, doi: 10.1109/VTC2024-Spring62846.2024.10683183
• Andreas Maaßen, Dirk Wiegner
  Industrializable Key Technologies for Energy-Efficient Tbit-Transceivers in 6G Mobile Communication Systems,
  6G Platform Conference, Berlin, July 2024, Nokia Solutions and Networks GmbH&Co KG, Infineon Technologies AG, United Monolithic Semiconductors, LPKF Laser & Electronics GmbH, Innovative Circuit Technologies -
• Guillermo von Hünefeld, Enes Seker, Rijil Thomas, Stephan Suckow, Gregor Ronniger, Mahdi Kaveh, Pooyan Safari, Isaac Sackey, David Stahl, Colja Schubert, Johannes Fischer, Ronald Freund, Max Lemme
  Robust Fabrication of Photonic Neuromorphic Reservoir for Modulation Format Identification,
  Internatinal conference on Neuromorphic Computing and Engineering (ICNCE) -2024, June 3-6., Eurogress Aachen, June 2024
• Pamir Oezsuna, Aymeric Arnould, Emil Luis Spoiden, Nicolas Braig-Christophersen, Robert Emmerich, Ruben S. Luis, Benjamin J. Puttnam, Kazuhiko Aikawa, Carsten Schmidt-Langhorst, Colja Schubert, Ronald Freund, Georg Rademacher
  Experimental Demonstration of a Correlation-Avoidance CMA for Blind Space-Division Multiplexed MIMO Equalization,
  European Conference on Optical Communications ECOC 2024, Frankfurt am Main, VDE VERLAG GMBH Berlin , ISBN: 978-3-8007-6426-6, pp. page W1C.2, 1471-1474., April 2024, doi: https://ieeexplore.ieee.org/document/10926073/authors#authors
• Jerome Wiesemann
  Towards the certification of quantum key distribution systems,
  Heraeus Seminar - Physics and Security, Bad Honnef, March 2024
• Mihail Balanici, Mohammad Behnam Shariati, Pooyan Safari, Geronimo Bergk, Johannes Fischer
  Autonomous Capacity Adjustment with Dynamic Margin Allocation for Optical Enterprise Links,
  Fraunhofer HHI, Optical Fiber Communication Conference 2024 San Diego California United States, March 2024, doi: https://doi.org/10.1364/OFC.2024.M1H.2
• Tomi Getselev, Sarah Sommermeier, Matheus Ribeiro Sena, Nino Walenta, Ralf-Peter Braun, Michaela Riter, Marc Geitz, Nicolas Perlot, Ronald Freund
  Demonstration of time-bin entanglement distribution and BBM92 QKD over the Berlin fiber testbed,
  QR.X-Workshop III - Recent developments in quantum repeater science & technology, Feb 21-23 2024, Bad Honnef , February 2024
• Guillermo von Hünefeld, Binoy Chacko, Gregor Ronniger, Mahdi Kaveh, Isaac Sackey, Mahtab Aghaeipour Kolyani, Peter Bienstman, Colja Schubert, Ronald Freund
  Neuromorphic reservoir for nonlinear optical signal equalization,
  Photonics West 2024, San Francisco, January 2024, doi: http://dx.doi.org/10.1117/12.3002627

2023

• Malte Hinrichs, Helder Rocha, Maria Pontes, Marcelo Segatto, Anagnostis Paraskevopoulos, Volker Jungnickel, Ronald Freund, Jair Silva, Wesley Costa
  A Performance Comparison of OFDM and Pulsed PHY Modulations in Optical Wireless Communications,
  2023 South American Conference On Visible Light Communications (SACVLC), Santiago, Chile, ISBN: 979-8-3503-5861-2, December 2023, doi: 10.1109/SACVLC59022.2023.10347540
• Peter Hanne, Aymeric Arnould, Nicolas Perlot, Abraham Johst, Bill Antonio Bernhardt, Marcel Rothe, Ronald Freund
  Real-time 10-Gb/s signal combining over a 3-km free-space optical link with multi-aperture receiver,
  24. VDE ITG Fachtagung Photonische Netze, Leipzig, Deutschland, December 2023
• Sarah Cwalina, Sepideh Mohammadi Kouhini, Kai Habel, Volker Jungnickel, Ronald Freund
  Demonstration of a Real-Time 100G Ethernet Space Division Multiplexing PON Using a Weakly Coupled Multicore Fiber,
  11th International workshop on FIBER OPTICS in ACCESS NETWORKS, Ghent, Belgium, October 2023, The authors acknowledge the financial support by the Federal Ministry of Education and Research of Germany in the programme of “Souverän. Digital. Vernetzt.” Joint project 6G-RIC, project identification number: 16KISK020K.
• Malte Hinrichs, Mariana Lyra Silveira, Giulio Boniello, Dominic Schulz, Martin Schubert, Ronald Böhnke, Wen Xu, Ronald Freund, Volker Jungnickel
  4 Gbit/s Optical Wireless Communication with High-Power Transmitter,
  49th European Conference on Optical Communications (ECOC 2023), Glasgow, October 2023, doi: 10.1049/icp.2023.2528
• Jan Krause, Nino Walenta, Benedikt Lezius, Richard Vincent Schilling, Ronald Freund
  Experimental demonstration of a QKD platform over long-distance-, metro-, and last-mile links,
  QCrypt 2023 - 13th International Conference on Quantum Cryptography, Maryland, USA, August 2023
• Jan Krause, Nino Walenta, Benedikt Lezius, Richard Vincent Schilling, Ronald Freund
  Experimental demonstration of a QKD platform over long-distance-, metro-, and last-mile links,
  Fraunhofer HHI, Berlin, August 2023
• Andy Schreier, Grahame Faulkner, Steve Elston, Grahame Faulkner, Dominic O´Brien, Stephen M. Morris
  Non-mechanical optical beam-steering and polarization state distribution of LC lasers,
  Liquid Crystals XXVII, part of SPIE Organic Photonics + Electronics, San Diego, August 2023, doi: https://doi.org/10.1117/12.2676363
• Isaac Sackey, Ronald Freund, Colja Schubert, Gregor Ronniger, Lars Zimmermann, Tasnad Kernetzky, Norbert Hanik, Yizhao Jia, Ulrike Höfler
  Optimization of Ultra-Broadband Optical Wavelength Conversion in Nonlinear Multi-Modal Silicon-On-Insulator Waveguides,
  2023 23rd International Conference on Transparent Optical Networks (ICTON), Bucharest, Romania, IEEE, July 2023, doi: 10.1109/ICTON59386.2023.10207185
• Mihail Balanici, Mohammad Behnam Shariati, Pooyan Safari, Paul Chojecki, Moritz Chemnitz, David Przewozny, Johannes K. Fischer, Ronald Freund
  F5G OpenLab: Enabling Twin Transition through Ubiquitous Fiber Connectivity,
  ICTON 2023, Bucharest, Romania, ISBN: 979-8-3503-0303-2, July 2023, doi: 10.1109/ICTON59386.2023.10207224
• Isaac Sackey, Hidenobu Muranaka, Tomoyuki Kato, Shun Okada, Yu Tanaka, Tsuyoshi Yamamoto, Gregor Ronniger, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert, Takeshi Hoshida
  Comparison of Polarization Diversity Configurations of SOI Strip Waveguide-Based Dual-Polarization Wavelength Conversion for S-Band Transmission,
  Opto-Electronics and Communications Conference (OECC), Shanghai, China, IEEE, June 2023, doi: 10.1109/OECC56963.2023.10209749
• Nicolas Braig-Christophersen, Andreas Maaßen, Juan L. Morrone, Carsten Schmidt-Langhorst, Robert Elschner, Robert Emmerich, Johannes Fischer, Colja Schubert
  Experimental and Numerical Evaluation of CAZAC-type Training Sequences for MxM SDM-MIMO Channel Estimation,
  24. VDE ITG Fachtagung Photonische Netze, Leipzig, May 2023, doi: https://ieeexplore.ieee.org/document/7110091
• In-Ho Baek, Oliver Stiewe, Simon Nellen, Garrit William Johannes Schwanke, Robert Elschner, Colja Schubert, Robert Kohlhaas, Martin Schell, Ronald Freund
  32 GBd, 109 Gbit/s Probabilistically Shaped THz Wireless Transmission Using PIN-PD Based Photonic Upconversion,
  Fraunhofer HHI, Berlin, May 2023, doi: 10.1049/icp.2023.2531
• Javad Gholipour, Kai Lennert Bober, Malte Hinrichs, Volker Jungnickel
  Compressed Sensing for Feedback Generation in OFDM Based LiFi Systems,
  IEEE Wireless Communications and Networking Conference (WCNC), Glasgow, United Kingdom, May 2023
• Pascal Rustige, Jan Krause, Lorenz Eckoldt, Patrick Runge, Martin Schell
  Guard-ring free InGaAs/InP single photon avalanche diodes for C-band quantum communication,
  Optical Fiber Communication Conference 2023, San Diego, USA, March 2023, doi: 10.1364/OFC.2023.W3C.4, Optica Publishing Group, paper W3C.4
• Nicolas Perlot
  18km bidirectional free-space optical link with multi-aperture antenna and DWDM SFP+ transceivers (VERTIGO project),
  Proc. Free-Space Laser Communications XXXV, San Francisco, CA, USA, SPIE Photonics West, Jan, 2023, March 2023
• Jan Krause, Pascal Rustige, Lorenz Eckoldt, Patrick Runge, Martin Schell
  Guard-ring free InGaAs/InP single photon avalanche diodes for C-band quantum communication,
  Optical Fiber Communication (OFC) Conference 2023, San Diego, March 2023, doi: https://doi.org/10.1364/OFC.2023.W3C.4
• R.S. Luis, Giammarco Di Sciullo, Georg Rademacher, Benjamin Puttnam, Andrea Marotta, Robert Emmerich, Nicolas Braig-Christophersen, Ralf Stolte, Fabio Graziosi, A. Mecozzi, Colja Schubert, Tetsuya Hayashi, Takuji Nagashima, Cristian Antonelli, Hideaki Furukawa
  Colorless and Directionless ROADM for Meshed Coupled-Core Multicore Fiber Networks,
  OFC, Berlin, March 2023, doi: 10.1364/OFC.2023.Th4C.3

2022

• Malte Hinrichs, Giulio Boniello, Peter Hellwig, Dominic Schulz, Christoph Kottke, Martin Schubert, Ronald Böhnke, Wen Xu, Ronald Freund, Volker Jungnickel
  Demonstration of 1.75 Gbit/s VCSEL-Based Non-Directed Optical Wireless Communications With OOK and FDE,
  48th European Conference on Optical Communication (ECOC), Basel, Switzerland, IEEE, December 2022, arXiv: https://ieeexplore.ieee.org/document/9979263, We5.52
• Malte Hinrichs, Benjamin Poddig, Peter Hellwig, Volker Jungnickel
  Reducing Overhead for Low-Power Optical Wireless Communications,
  48th Annual Conference of the Industrial Electronics Society IECON 2022 Conference, Brussels, Belgium, IEEE, December 2022, arXiv: https://ieeexplore.ieee.org/document/9968414
• Isaac Sackey, Robert Elschner, Carsten Schmidt-Langhorst, Gregor Ronniger, Tomoyuki Kato, Takeshi Hoshida, Colja Schubert, Ronald Freund
  Experimental Study of In-line Nonlinearity Mitigation for a 400 Gb/s Dual-Carrier Superchannel with Joint Reception Using a Waveband-Shift-Free OPC,
  2022 IEEE Photonics Conference (IPC), Vancouver, BC, Canada, IEEE, November 2022, doi: 10.1109/IPC53466.2022.9975755, arXiv: https://ieeexplore.ieee.org/document/9975755
• Anagnostis Paraskevopoulos, Michael Schlosser, Warunee Pluemakarapunya, Dominic Schulz, Peter Hellwig, Julian Hohmann, Matthias Bohge, Thomas Menzel, Hagen Woesner, Volker Jungnickel
  Software-defined LiFi - RF network for Industry 4.0 applications ,
  48th Annual Conference of the Industrial Electronics Society IECON 2022, Brussels, Belgium, October 2022
• Caio Marciano Santos, Mohammad Behnam Shariati, Robert Emmerich, Carsten Schmidt-Langhorst, Colja Schubert, Johannes K. Fischer
  Automated Dataset Generation for QoT Estimation in Coherent Optical Communication Systems,
  European Conference and Exhibition on Optical Communication 2022, Basel, Switzerland, ISBN: 978-1-957171-15-9, September 2022, arXiv: https://opg.optica.org/abstract.cfm?uri=ECEOC-2022-Tu2.4, paper Tu2.4
• Isaac Sackey, Gregor Ronniger, Carsten Schmidt-Langhorst, Robert Elschner, Md Mahasin Khan, Hidenobu Muranaka, Tomoyuki Kato, Shun Okada, Tsuyoshi Yamamoto, Yu Tanaka, Takeshi Hoshida, Colja Schubert, Ronald Freund
  Ultra-Wideband All-optical Interband Wavelength Conversion Using a Low-complexity Dispersion-engineered SOI Waveguide,
  European Conference and Exhibition on Optical Communication 2022, Basel, Switzerland, ISBN: 978-1-957171-15-9, September 2022, arXiv: https://opg.optica.org/abstract.cfm?URI=ECEOC-2022-Th2F.3, paper Th2F.3
• Vegenshanti Valerian Dsilva, Isaac Sackey, Gregor Ronniger, Guillermo von Hünefeld, Binoy Chacko, Colja Schubert, Ronald Freund
  Investigating the Performance and Suitability of Neural Network Architectures for Nonlinearity Mitigation of Optical Signals,
  European Conference and Exhibition on Optical Communication 2022, Basel, Switzerland, ISBN: 978-1-957171-15-9, September 2022, arXiv: Investigating the Performance and Suitability of Neural Network Architectures for Nonlinearity Mitigation of Optical Signals, paper Tu5.27
• Guillermo von Hünefeld, Gregor Ronniger, Pooyan Safari, Isaac Sackey, Rijil Thomas, Enes Seker, Piotr Cegielski, Stephan Suckow, Max Lemme, David Stahl, Sarah Masaad, Emmanuel Gooskens, Peter Bienstman, Colja Schubert, Johannes K. Fischer, Ronald Freund
  Enabling Optical Modulation Format Identification Using an Integrated Photonic Reservoir and a Digital Multiclass Classifier,
  European Conference and Exhibition on Optical Communication 2022, Basel, Switzerland, ISBN: 978-1-957171-15-9, September 2022, arXiv: https://opg.optica.org/abstract.cfm?uri=ECEOC-2022-Tu5.19, paper Tu5.19
• Oliver Stiewe, Robert Elschner, Andreas Maaßen, Stefan Weide, Colja Schubert, Ronald Freund
  Towards High-Capacity THz-Wireless P2MP Communication Systems for 6G,
  2022 52nd European Microwave Conference (EuMC), Milan, Italy, September 2022, doi: 10.23919/EuMC54642.2022.9924314, arXiv: https://ieeexplore.ieee.org/document/9924314
• Georg Rademacher, Ruben S. Luis, Benjamin J. Puttnam, Giammarco Di Sciullo, Robert Emmerich, Nicolas Braig-Christophersen, Andrea Marotta, Antonio Mecozzi, Colja Schubert, Pierre Sillard, Frank Achten, Jun Sakaguchi, Cristian Antonelli, Hideaki Furukawa
  Characterization of the First Field-Deployed 15-mode Fiber,
  European Conference of Optical Communications (ECOC), Basel, Switzerland, September 2022, arXiv: https://ieeexplore.ieee.org/document/9979572
• Ruben S. Luis, Georg Rademacher, Benjamin J. Puttnam, Giammarco Di Sciullo, Andrea Marotta, Robert Emmerich, Nicolas Braig-Christophersen, Ralf Stolte, Fabio Graziosi, Antonio Mecozzi, Colja Schubert, Giuseppe Ferri, Frank Achten, Pierre Sillard, Cristian Antonelli, Hideaki Furukawa
  Demonstration of a Spatial Super Channel Switching SDM Network Node on a Field Deployed 15-Mode Fiber Network,
  European Conference of Optical Communications (ECOC), Basel, Switzerland, September 2022
• Jonathan Schostak, Tobias Tannert, Christian Schmidt, Holger Rücker, Volker Jungnickel, Markus Grözing, Manfred Berroth, Ronald Freund
  150 GBd PAM-4 Electrical Signal Generation using SiGe-Based Analog Multiplexer Ic,
  2022 17th European Microwave Integrated Circuits Conference (EuMIC), Milan, Italy, IEEE, September 2022, doi: 10.23919/EuMIC54520.2022.9923466, arXiv: https://ieeexplore.ieee.org/document/9923466
• Mihail Balanici, Geronimo Bergk, Pooyan Safari, Mohammad Behnam Shariati, Johannes K. Fischer, Ronald Freund
  Demonstration of a Real-Time ML Pipeline for Traffic Forecasting in AI-Assisted F5G Optical Access Networks,
  European Conference and Exhibition on Optical Communication 2022, Basel, Switzerland, ISBN: 978-1-957171-15-9, September 2022, arXiv: We showcase a proof-of-concept demonstration of a ML pipeline for real-time traffic forecasting deployed on a passive optical access network using an XGS-PON compatible telemetry framework. The demonstration reveals the benefits of fine-granular telemetry streaming for QoS monitoring and adaptive capacity adjustment of end-customers., paper Tu2.5
• Farhad Arpanaei, Mohammad Behnam Shariati, Pooyan Safari, Mahdi Ranjbar Zefreh, José Alberto Hernández, Andrea Carena, Johannes K. Fischer, David Larrabeiti
  A Novel Approach for Joint Analytical and ML-assisted GSNR Estimation in Flexible Optical Network,
  2022 European Conference on Optical Communication (ECOC), Basel, Switzerland, IEEE, September 2022
• Farhad Arpanaei, Mohammad Behnam Shariati, Pooyan Safari, Mahdi Ranjbar Zefreh, José Alberto Hernández, Andrea Carena, Johannes K. Fischer, David Larrabeiti
  A Novel Approach for Joint Analytical and ML-assisted GSNR Estimation in Flexible Optical Network,
  European Conference and Exhibition on Optical Communication 2022, Basel, Switzerland, ISBN: 978-1-957171-15-9, September 2022, arXiv: https://opg.optica.org/abstract.cfm?uri=ECEOC-2022-Tu5.60, paper Tu5.60
• Isaac Sackey, Guillermo von Hünefeld, Gregor Ronniger, Colja Schubert, Ronald Freund
  Selected Recent Advances of Optical Signal Processing Novel Concepts for Fuuture Ultra-fast Optical Networks,
  2nd Global Summit and Expo on Lasers, Optics and Photonics (GSELOP 2022), Edinburgh, Scotland, August 2022, doi: https://www.thescientistt.com/laser-optics-photonics/2022/abstract-book.pdf, Invited Paper
• Sepideh Mohammadi Kouhini, Ziyan Ma, Christoph Kottke, Sreelal Maravanchery Mana, Ronald Freund, Volker Jungnickel
  Object Tracking in an Indoor Scenario: Potential for Centimeter Accuracy with LiFi,
  2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), Porto, Portugal, IEEE, ISBN: 978-1-6654-1044-1, July 2022, doi: 10.1109/CSNDSP54353.2022.9908025
• Pooyan Safari, Mohammad Behnam Shariati, David Przewozny, Paul Chojecki, Johannes K. Fischer, Ronald Freund, Axel Vick, Moritz Chemnitz
  Edge Cloud based Visual Inspection for Automatic Quality Assurance in Production,
  13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), Porto, Portugal, IEEE, ISBN: 978-1-6654-1044-1, July 2022, doi: 10.1109/CSNDSP54353.2022.9907957, arXiv: https://ieeexplore.ieee.org/abstract/document/9907957
• Hidenobu Muranaka, Tomoyuki Kato, Shun Okada, Tokuharu Kimura, Yu Tanaka, Tsuyoshi Yamamoto, Isaac Sackey, Gregor Ronniger, Carsten Schmidt-Langhorst, Colja Schubert, Takeshi Hoshida
  Characterization of Dispersion-Tailored Silicon Strip Waveguide for Wideband Wavelength Conversion,
  2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC), Toyama, Japan, July 2022, doi: 10.23919/OECC/PSC53152.2022.9850124, arXiv: https://ieeexplore.ieee.org/document/9850124
• Norbert Hanik, Tasnad Kernetzky, Yizhao Jia, Ulrike Höfler, Ronald Freund, Colja Schubert, Isaac Sackey, Gregor Ronniger, Lars Zimmermann
  Ultra-Broadband Optical Wavelength-Conversion using Nonlinear Multi-Modal Optical Waveguides,
  13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), Porto, Portugal, ISBN: 978-1-6654-1044-1, July 2022, doi: 10.1109/CSNDSP54353.2022.9908054, arXiv: https://ieeexplore.ieee.org/document/9908054
• Mohammad Behnam Shariati, Geronimo Bergk, Pooyan Safari, Mihail Balanici, Johannes K. Fischer, Ronald Freund
  Traffic Monitoring and Analytics Framework for Optical Access Networks,
  2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), Porto, Portugal, IEEE, ISBN: 978-1-6654-1044-1, July 2022, doi: 10.1109/CSNDSP54353.2022.9907906, Invited Paper
• Florian Moll, Jan Krause, Nino Walenta, Ronald Freund, Eltimir Peev, Andrew Reeves, Rene Ruddenklau, Agnes Ferenczi, Luca Macri, Stefanie Hausler, Jorge Pacheco Labrador, Marie-Theres Hahn, Jurai Poliak, Davide Orsucci, Friederike Fohlmeister
  Link technology for all-optical satellite-based quantum key distribution system in C-/L-band,
  2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS), Kyoto City, Japan, pp. 275-280, June 2022, doi: doi: 10.1109/ICSOS53063.2022.9749733
• Mohammad Behnam Shariati, Mihail Balanici, Pooyan Safari, Johannes K. Fischer, Ronald Freund
  F5G OpenLab at HHI: from Vision to Solutions,
  NGON 2022, Barcelona, Spain, June 2022, Invited Paper
• In-Ho Baek, Frederik Bart, Robert Elschner, Fred Meier, David Hellmann, Andreas Maaßen, Colja Schubert, Ronald Freund
  Time Adaptive Probabilistic Shaping for Combined Optical/THz Links,
  Photonic Networks; 23th ITG-Symposium, Berlin, Germany, VDE, ISBN: 978-3-8007-5877-7, May 2022, arXiv: https://ieeexplore.ieee.org/document/10484807
• Jonathan Schostak, Malte Hinrichs, Kai Lennert Bober, Ronald Freund, Volker Jungnickel
  Simultaneous Channel Estimation for Pulsed-Modulation Optical Wireless Communications,
  ICC 2022 - IEEE International Conference on Communications, Seoul, Republic of Korea, IEEE, ISBN: 978-1-5386-8347-7, May 2022, doi: 10.1109/ICC45855.2022.9838488
• Fabian Beutel, Matthias Häußler, Robin Terhaar, Martin A. Wolff, Wladick Hartmann, Nicolai Walter, Max Tillmann, Michael Wahl, Tino Röhlicke, Mahdi Ahangarianabhari, Andreas Bülter, Doreen Wernicke, Nicolas Perlot, Jasper Rödiger, Carsten Schuck, Wolfram H. P. Pernice
  Ultra-Fast Single-Photon Counting with Waveguide-Integrated Detectors for Quantum Technologies,
  Proc. SPIE 12089, Advanced Photon Counting Techniques XVI, Orlando, Florida, United States, May 2022, doi: doi: 10.1117/12.2620329
• Mohammad Behnam Shariati, Pooyan Safari, Johannes K. Fischer
  Federated Learning for Optical Network Automation: A Data Ownership Perspective,
  26th International Conference on Optical Network Design and Modelling (ONDM), Warsaw, Poland, May 2022, Invited Paper
• Nino Walenta
  Quantum key distribution systems for future-proof information security,
  OPTICS & PHOTONICS International Exhibition (OPIE), Yokohama, Japan, April 2022, Invited Paper
• Intel , Marc Müller, Marc Emmelmann, Daniel Behnke, Dominic Schulz, Kai Lennert Bober, Christoph Kottke, Volker Jungnickel, Taner Metin
  LiFi with 5G for the Smart Factory,
  2021 European Conference on Optical Communication (ECOC), Bordeaux, France, IEEE, ISBN: 978-1-6654-3868-1, April 2022, doi: 10.1109/WCNC51071.2022.9771969
• Nikolai N. Ledentsov, Christoph Kottke, Lukasz Chorchos, Vitaly-A. Shchukin, Oleg Yu Makarov, Marwan Bou Sanayeh, Vladimir P. Kalosha, Volker Jungnickel, Ronald Freund, Jaroslaw P. Turkiewicz, Nikolai N. Ledentsov
  Up to 600 Gbit/s data transmission over 100 m of single multi-mode fiber using 4×λ 850-940 nm VCSELs,
  2022 Optical Fiber Communications Conference and Exhibition (OFC), 978-1-55752-466-9, IEEE, ISBN: 978-1-55752-466-9, March 2022
• Mohammad Behnam Shariati, Pooyan Safari, Johannes K. Fischer
  ML-assisted Qot Estimation in Open and Disaggregated Optical Networks: A Data Ownership Perspective,
  2022 Optical Fiber Communications Conference and Exhibition (OFC), San Diego, CA, USA, IEEE, March 2022, Invited Paper
• Christoph Kottke, Dominic Schulz, Volker Jungnickel
  LiFi use case in real environments,
  Workshop: Optical Wireless Communications: Status and Perspectives, Online Only, February 2022, OWC-SP22-2A

2021

• Tobias Tannert, Markus Grözing, Manfred Berroth, Christian Schmidt, Jung Han Choi, Christoph Caspar, Jonathan Schostak, Volker Jungnickel, Ronald Freund, Holger Rücker
  Analog 2:1 Multiplexer with over 110 GHz Bandwidth in SiGe BiCMOS Technology,
  2021 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS), Monterey, CA, USA, IEEE, December 2021, doi: 10.1109/BCICTS50416.2021.9682492
• Tobias Tannert, Markus Grözing, Manfred Berroth, Christian Schmidt, Jung Han Choi, Christoph Caspar, Jonathan Schostak, Volker Jungnickel, Ronald Freund, Holger Rücker
  Analog 2:1 Multiplexer with over 110 GHz Bandwidth in SiGe BiCMOS Technology,
  2021 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS), Monterey, CA, USA, ISBN: 978-1-6654-3990-9, December 2021, doi: 10.1109/BCICTS50416.2021.9682492
• Matheus Ribeiro Sena
  DSP-based Link Tomography for Amplifier Gain Profile Estimation and Failure Detection in C+L-band Open Line Systems,
  Fraunhofer, Berlin, November 2021, arXiv: https://opg.optica.org/jlt/abstract.cfm?uri=jlt-40-11-3395, Invited Paper
• Isaac Sackey, Robert Elschner, Robert Emmerich, Christian Schmidt-Langhorst, Dirk-Daniel Gross, Georg Rademacher, Yoshinari Awaji, Hideaki Furukawa, Takemi Hasegawa, Colja Schubert, Ronald Freund
  Performance Evaluation of an Interband All-Optical Wavelength Converter for Cost-Effective High-Capacity Optical Networks,
  2021 European Conference on Optical Communication (ECOC), Bordeaux, France, IEEE, ISBN: 978-1-6654-3868-1, September 2021, doi: 10.1109/ECOC52684.2021.9606078
• Malte Hinrichs, Benjamin Poddig, Markus Nölle, Peter Hellwig, Ronald Freund, Volker Jungnickel
  Efficient Line Coding for Low-Power Optical Wireless Communications,
  021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), Norman, OK, USA, IEEE, ISBN: 978-1-6654-1368-8, September 2021, doi: 10.1109/VTC2021-Fall52928.2021.9625557
• Sepideh Mohammadi Kouhini, Ziyan Ma, Christoph Kottke, Sreelal Maravanchery Mana, Ronald Freund, Volker Jungnickel
  LiFi based Positioning for Indoor Scenarios,
  2021 17th International Symposium on Wireless Communication Systems (ISWCS), Berlin, Germany, IEEE, ISBN: 978-1-7281-7432-7, September 2021, doi: 10.1109/ISWCS49558.2021.9562207
• Pooyan Safari, Mohammad Behnam Shariati, Geronimo Bergk, Johanna Fischer
  Secure Multi-Party Computation and Statistics Sharing for ML Model Training in Multi-domain Multi-vendor Networks,
  European Conference on Optical Communication (ECOC), Bordeaux, France , IEEE, September 2021, doi: 10.1109/ECOC52684.2021.9606082, arXiv: https://ieeexplore.ieee.org/abstract/document/9606082
• Nazila Hashemi, Pooyan Safari, Mohammad Behnam Shariati, Johannes Fischer
  Vertical Federated Learning for Privacy-Preserving ML Model Development in Partially Disaggregated Networks,
  European Conference on Optical Communication (ECOC), Bordeaux, France, IEEE, September 2021, doi: 10.1109/ECOC52684.2021.9605846, arXiv: https://ieeexplore.ieee.org/abstract/document/9605846
• Pooyan Safari, Mohammad Behnam Shariati, Geronimo Bergk, Johannes K. Fischer
  Secure Multi Party Computation and Statistics Sharing for ML Model Training in Multi-domain Multi-vendor Networks,
  2021 European Conference on Optical Communication (ECOC), Bordeaux, France, IEEE, ISBN: 978-1-6654-3868-1, September 2021, doi: 10.1109/ECOC52684.2021.9606082
• Nazila Hashemi, Pooyan Safari, Mohammad Behnam Shariati, Johannes K. Fischer
  Vertical Federated Learning for Privacy-Preserving ML Model Development in Partially Disaggregated Networks,
  2021 European Conference on Optical Communication (ECOC), Bordeaux, France, ISBN: 978-1-6654-3868-1, September 2021, doi: 10.1109/ECOC52684.2021.9605846
• Gabriele Di Rosa, Robert Emmerich, Matheus Ribeiro Sena, Johannes K. Fischer, Colja Schubert, Andre Richter
  Impact of Wavelength-Dependent I/Q Imbalances of Standard C-Band Transceivers in Rate-Adaptive Multiband Systems,
  2021 European Conference on Optical Communication (ECOC), Bordeaux, France, IEEE, ISBN: 978-1-6654-3868-1, September 2021, doi: 10.1109/ECOC52684.2021.9606117
• Gregor Ronniger, Isaac Sackey, Tasnad Kernetzky, Ulrike Höfler, Christian Mai, Colja Schubert, Norbert Hanik, Lars Zimmermann, Ronald Freund, Klaus Petermann
  Efiicient Ultra-Broadband C-to-O-band Converter Based on Multi-mode SOI Waveguides,
  2021 European Conference on Optical Communication (ECOC), Bordeaux, France, IEEE, ISBN: 978-1-6654-3868-1, September 2021, doi: 10.1109/ECOC52684.2021.9606033
• Jan Krause, Benedikt Lezius, Richard Vincent Schilling, Jonas Hilt, Stefan Weide, Nino Walenta, Nicolas Perlot, Ronald Freund
  A real-time experimental QKD platform for a quantum-secure German agencies infrastructure,
  QCrypt 2021, online, August 2021
• Sarah Cwalina, Christoph Kottke, Volker Jungnickel, Ronald Freund, Patrick Runge, Pascal Rustige, Thomas Knieling, Shansan Gu-Stoppel, Jörg Albers, Norman Laske, Frank Senger, Lianzhi Wen, Fabio Giovanneschi, Erdem Altuntac, Avinash Nittur Ramesh, Maria Antonia Gonzalez Huici, Andries Küter, Sangeeta Reddy
  Fiber-based Frequency Modulated LiDAR With MEMS Scanning Capability for Long-range Sensing in Automotive Applications ,
  IEEE, IEEE MetroAutomotive, July 2021, doi: 10.1109/MetroAutomotive50197.2021.9502868, Invited Paper, https://www.researchgate.net/publication/353038369
• Johannes K. Fischer, Matheus Ribeiro Sena, Robert Emmerich, Mohammad Behnam Shariati, Colja Schubert
  Perspectives of optical transmitter for multi-band transmission systems,
  IEEE Photonics Society Summer Topicals, virtual conference, IEEE, July 2021, Invited Paper
• Pooyan Safari, Mohammad Behnam Shariati, Geronimo Bergk, Johannes Fischer
  Deep Convolutional Neural Network for Network-wide QoT Estimation,
  2021 Optical Fiber Communications Conference and Exhibition (OFC), San Francisco, CA, USA, IEEE, June 2021
• Mohammad Behnam Shariati, J.J. Pedreno-Manresa, Annika Dochhan, A. S. Muqaddas, R. Casellas, O. González de Dios, L. L. Canto, Bodo Lent, J. E. Lopez de Vergara, S. López-Buedo, F.J. Moreno, P. Pavón, Luis Velasco, S. Patri, A. Giorgetti, F. Cugini, A. Sgambelluri, R. Nejabati, Dimitra Simeonidou, Ralf-Peter Braun, Achim Autenrieth, Jörg-Peter Elbers, Johannes Fischer, Ronald Freund
  A Latency-Aware Real-Time Video Surveillance Demonstration: Network Slicing for Improving Public Safety,
  2021 Optical Fiber Communications Conference and Exhibition (OFC), San Francisco, CA, USA , IEEE, ISBN: 978-1-943580-86-6, June 2021
• Mohammad Behnam Shariati, Pooyan Safari, Geronimo Bergk, Felix Immanuel Oertel, Johannes K. Fischer
  Inter-Operator Machine Learning Model Trading over Acumos AI Federated Marketplace,
  2021 Optical Fiber Communications Conference and Exhibition (OFC), San Francisco, CA, USA , IEEE, ISBN: 978-1-943580-86-6, June 2021
• Jean-Paul Linnartz , Carina Ribeiro Barbio Corrêa, Thiago Cunha, Eduward Tangdiongga, T. Koonen, Xiong Deng, M. Wendt, A. Abbo, P. J. Stobbelaar, M. Müller, Daniel Behnke, Marcos Martinez Vazquez, S. V. Colonques, M. Bech, T. Metin, Sepideh Mohammadi Kouhini, Kai Lennert Bober, Christoph Kottke, Volker Jungnickel
  ELIoT: New Features in LiFi for Next-Generation IoT,
  2021 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), Porto, Portugal, IEEE, ISBN: 978-1-6654-1526-2, June 2021, doi: 10.1109/EuCNC/6GSummit51104.2021.9482478
• A. Le Kerneca, A. Mahoa, S. Lévêquea, B. Bénazeta, M. Sotoma, D. Matterb, L. Pommarelb, H. Lindbergb, L. Francoub, M. Welchc, A. Donnotc, P. Keanc, J. Edmundsc, E. Kehayasc, N. Perlotd, A. Arnouldd, P. Hanned, A. Johstd, M. Rothed, A. Paraskevopoulosd, R. Freund, Y. Horste, B. I. Bitachone, L. Kulmere, T. Blattere, K. Kellere, J. Leutholde, V. Billaultf, A. Brignonf, J. Bourderionnetf, E. Lallierf, L. Leviandierf, J.-M. Conang, N. Védrenneg, A. Montmerle-Bonnefoisg, C. Petitg, J. Montrig, B. Sorrenteg, C. B. Limg, L. Stampoulidish, M. Fehrenzi, T. Lehnigk-Emdeni
  The H2020 VERTIGO project : a major milestone towards optical feeder links,
  COAT 2023, China, June 2021, doi: https://doi.org/10.1117/12.2599229
• Pascal Rustige, Patrick Runge, Francisco M. Soares, Jan Krause, Martin Schell
  A new concept for spatially resolved coherent detection with vertically illuminated photodetectors targeting ranging applications,
  SPIE OPTO: Optical Components and Materials XVIII, virtuell Conference, SPIE Digital Library, March 2021, doi: https://doi.org/10.1117/12.2576323, 11682
• Lukasz Chorchos, Nikolay Ledentsov, O. Makarov, Philipp Scholz, Urs Hecht, Christoph Kottke, Volker Jungnickel, Ronald Freund, Vitaly-A. Shchukin, Vladimir P. Kalosha, Jaros?aw Turkiewicz, Friedel Gerfers
  NRZ, DB, and DMT performance for short-reach VCSEL-based optical interconnects,
  Conference "Optical Interconnects" (SPIE OPTO), 2021, United States Bellingham, March 2021, doi: 10.1117/12.2578553

2020

• Mohammad Behnam Shariati, Pooyan Safari, Nazila Hashemi, Angela Mitrovska, Johannes Fischer, Ronald Freund
  Demonstration of Federated Learning over Edge-Computing Enabled Metro Optical Networks,
  ECOC 2020, Online, December 2020, doi: 10.1109/ECOC48923.2020.9333246
• Jan Krause, Jonas Hanke, Carl M. Weinert, Nicolas Perlot, Ronald Freund
  Monostatic LIDAR Sensor based on a Multi-mode Fiber Bundle,
  ITG Fachtatung Photonische Netze 2020, Leipzig, November 2020, arXiv: https://ieeexplore.ieee.org/document/9273751
• Jonas Hanke, Jasper Rödiger, Nino Walenta, Nino Walenta, Nicolas Perlot, Ronald Freund
  A simplified receiver for 32 channel wavelength-division multiplexing QKD,
  QCrypt 2020, QCrypt 2020, August 2020
• Pooyan Safari, Mohammad Behnam Shariati, Johannes Fischer
  Privacy-Preserving Distributed Learning Framework for 6G Telecom Ecosystem,
  2nd KuVS Fachgesprach "Machine Learning and Networking" , Online, August 2020
• Matheus Ribeiro Sena, Mustafa Sezer Erkilinc, Thomas Dippon, Mohammad Behnam Shariati, Robert Emmerich, Johannes K. Fischer, Ronald Freund
  An Autonomous Identification and Pre-distortion Scheme for Cognitive Transceivers using Bayesian Optimization,
  ECOC 2020, Online, August 2020
• Malte Hinrichs, Christian Schmidt, Benjamin Poddig, Jonas Hilt, Peter Hellwig, Dominic Schulz, Kai Lennert Bober, Jonathan Schostak, Ronald Freund, Volker Jungnickel
  Demonstration of Optical Wireless Communications Using the Pulsed Modulation PHY in IEEE 802.15.13,
  Proc. 22nd International Conference on Transparent Optical Networks (ICTON) 2020, 19-23 July 2020, online, paper Mo.B2.4, Berlin, July 2020
• Matheus Ribeiro Sena, Yaonian Cui, Gerrit Fiol, Mohammad Behnam Shariati, Antonio Napoli, Johannes K. Fischer, Martin Schell, Ronald Freund
  Performance Evaluation of InP-based DP-IQ Modulators for Multiband Transmission Systems,
  ICTON 2020, Online, July 2020, doi: 10.1109/ICTON51198.2020.9203554, Invited Paper
• Martin A. Wolff, Fabian Beutel, Matthias Häußler, Helge Gehring, R. Stegmüller, N. Walter, Wladick Hartmann, M. Tillmann, Michael Wahl, Tino Röhlicke, A. Bülter, D. Wernicke, Nicolas Perlot, Jasper Rödiger, Wolfram H. P. Pernice, Carsten Schuck
  Waveguide-Integrated Superconducting Nanowire SinglePhoton Detector Array for Ultra-Fast Quantum Key Distribution ,
  2020 Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, USA, ISBN: 978-1-943580-76-7, May 2020
• Carlos Moises Castro Posada, Robert Elschner, Thomas Merkle, Colja Schubert, Ronald Freund
  100 Gb/s Real-Time Transmission over a THz Wireless Fiber Extender Using a Digital-Coherent Optical Modem ,
  Optical Fiber Communication Conference (OFC) 2020, San Diego, California United States, OSA, ISBN: 978-1-943580-71-2, March 2020, doi: 10.1364/OFC.2020.M4I.2, paper M4I.2
• Isaac Sackey, Carsten Schmidt-Langhorst, Colja Schubert, Johannes K. Fischer, Ronald Freund
  Experimental Comparison of Fiber Nonlinearity Mitigation: Intra-modal FWM versus Inter-modal FWM,
  2020 Optical Fiber Communications Conference and Exhibition (OFC), San Diego, CA, USA, IEEE, ISBN: 978-1-9435-8071-2, March 2020
• Sreelal Maravanchery Mana, Peter Hellwig, Jonas Hilt, Kai Lennert Bober, Volker Jungnickel, Klara Hirmanova, Petr Chvojka, Radek Janca, Stanislav Zvanovec
  LiFi Experiments in a Hospital,
  2020 Optical Fiber Communications Conference and Exhibition (OFC), San Diego, CA, USA, March 2020
• Francisco Rodrigues, Ricardo Ferreira, Carlos Moises Castro Posada, Robert Elschner, Thomas Merkle, Colja Schubert, Antonio Teixeira
  Hybrid fiber-optical/THz-wireless link transmission using low-cost IM/DD optics,
  Optical Fiber Communication Conference (OFC) 2020, San Diego, California United States, OSA, ISBN: 978-1-943580-71-2, March 2020, doi: 10.1364/OFC.2020.W2A.40, paper W2A.40

2019

• Carlos Moises Castro Posada, Robert Elschner, José Machado, Thomas Merkle, Colja Schubert, Ronald Freund
  Ethernet Transmission over a 100 Gb/s Real-Time Terahertz Wireless Link,
  2019 IEEE Globecom Workshops (GC Wkshps), Waikoloa, HI, USA, USA, IEEE, December 2019, doi: 10.1109/GCWkshps45667.2019.9024443
• Carlos Moises Castro Posada, Robert Elschner, Thomas Merkle, Colja Schubert
  100 Gbit/s Terahertz-Wireless Real-Time Transmission Using a Broadband Digital-Coherent Modem,
  2019 IEEE 2nd 5G World Forum (5GWF), Dresden, Germany, IEEE, ISBN: 978-1-7281-3627-1, October 2019, doi: 10.1109/5GWF.2019.8911673
• Nicolas Perlot, Peter Hanne, Josep Perdigues
  Bidirection 20 Gbit/s OOK link with a 4-telescope array and incoherent signal combining,
  2019 IEEE International Conference on Space Optical Systems and Applications (ICSOS), Portland, OR, USA, USA, October 2019, doi: 10.1109/ICSOS45490.2019.8978966
• Martin A. Wolff, Fabian Beutel, Wladick Hartmann, Matthias Häußler, R. Stegmüller, N. Walter, M. Tillmann, Michael Wahl, Tino Röhlicke, A. Bülter, D. Wernicke, Nicolas Perlot, Jasper Rödiger, Wolfram H. P. Pernice, Carsten Schuck
  QuPAD - Waveguide Integrated Superconducting Nanowire Array for Ultra-Fast Parallelized Single-Photon Detection,
  Single Photon Workshop SPW-2019, Milan, Italy, p. 228, October 2019
• M. Tillmann, Michael Wahl, Tino Röhlicke, A. Bülter, D. Wernicke, Martin A. Wolff, Matthias Häußler, N. Walter, R. Stegmüller, Fabian Beutel, Wolfram H. P. Pernice, Carsten Schuck, Nicolas Perlot
  QuPAD - high bandwidth photon detection enabled by a massively parallelized system,
  Single Photon Workshop SPW-2019, Milan, Italy, October 2019
• Felix Frey, Sebastian Stern, Robert Emmerich, Colja Schubert, Johannes Fischer, Robert Fischer
  Coded Modulation using a 512-ary Hurwitz-Integer Constellations,
  Proc. 45th European Conference on Optical Communication (ECOC), Dublin, Ireland, September 2019
• Isaac Sackey, Marko Gruner, Robert Emmerich, Carsten Schmidt-Langhorst, Robert Elschner, Tobias Beckerwerth, Patrick Runge, Martin Schell, Colja Schubert, Ronald Freund
  Dual-Polarization Kramers-Kronig Reception Using Two Concatenated Polarization-Selective Photodiodes,
  Proc. 45th European Conference on Optical Communication (ECOC), Dublin, Ireland, September 2019, paper P15
• Isaac Sackey, Carsten Schmidt-Langhorst, Colja Schubert, Johannes Fischer
  Fiber nonlinearity mitigation using optical phase conjugation based on inter-modal FWM,
  45th European Conference on Optical Communication (ECOC 2019), Dublin, Ireland, IET, ISBN: 978-1-83953-185-9, September 2019, doi: 10.1049/cp.2019.1010
• Carlos Moises Castro Posada, Robert Elschner, Thomas Merkle, Colja Schubert
  Experimental Validation of Coherent DSP for Combined Fibre-Optical / Terahertz-Wireless Links,
  16th International Symposium on Wireless Communication Systems (ISWCS), Oulu, Finland, IEEE, ISBN: 978-1-7281-2527-5 , August 2019, doi: 10.1109/ISWCS.2019.8877328
• Malte Hinrichs, Pablo Wilke Berenguer, Ronald Freund, Volker Jungnickel
  Advanced Physical Layer Design for LiFi in the Industrial Internet of Things,
  Signal Processing in Photonic Communications 2019 (SPPCom), Burlingame, California United States, ISBN: 978-1-943580-64-4, August 2019, Invited Paper
• Carlos Moises Castro Posada, Robert Elschner, Colja Schubert
  Analysis of Joint Impairment Mitigation in a Hybrid Optic-THz Transmission System,
  2019 IEEE 20th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Cannes, France, IEEE, ISBN: 978-1-5386-6528-2 , July 2019, doi: 10.1109/SPAWC.2019.8815492
• Sakshi Sharma, Nicolas Perlot, Jasper Rödiger, Ronald Freund
  Tracking challenges of QKD over relay satellite,
  Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, Chania, Greece, July 2019, doi: doi: 10.1117/12.2536137
• Carsten Schmidt-Langhorst, Johannes Pfeiffer, Robert Elschner, Felix Frey, Robert Emmerich, Robert F. H. Fischer, Colja Schubert
  Experimental Investigation of Security Gaps when using Punctured LDPC Coding in Coherent Systems up to 64-GBd DP-64QAM,
  Photonische Netze - 20. ITG-Fachtagung, Leipzig, Germany, VDE, May 2019
• Malte Hinrichs, Jonas Hilt, Volker Jungnickel, Sang-Kyu Lim, Il Soon Jang, Jin-Doo Jeong, Mohammad Noshad
  Pulsed Modulation PHY for Power Efficient Optical Wireless Communication,
  2019 IEEE International Conference on Communications (ICC), Shanghai, China, China, IEEE, May 2019, doi: 10.1109/ICC.2019.8761150
• Robert Elschner, Carlos Moises Castro Posada, Thomas Merkle, Colja Schubert
  100 Gb/s High-Speed Wireless Transmission on a Terahertz Carrier ,
  IEEE International Conference on Computer Communications, Workshop on Ultra-high Broadband Terahertz Communication for 5G and Beyond networks (UBTCN’19), Paris, France, IEEE, April 2019, Invited Paper
• Carlos Moises Castro Posada, Simon Nellen, Robert Elschner, Isaac Sackey, Robert Emmerich, Thomas Merkle, Björn Globisch, David de Felipe Mesquida, Colja Schubert
  32 GBd 16QAM Wireless Transmission in the 300 GHz Band Using a PIN Diode for THz Upconversion,
  Optical Fiber Communication Conference 2019 (OFC), San Diego, California United States, ISBN: 978-1-943580-53-8, March 2019, doi: 10.1364/OFC.2019.M4F.5
• Mustafa Sezer Erkilinc, D. Lavery, P. Bayvel, R.I. Killey, Seb J. Savory, Colja Schubert
  Coherent ONU Designs for 50 Gb/s/λ PON,
  2019 Optical Fiber Communications Conference and Exhibition (OFC), San Diego, CA, USA, IEEE, ISBN: 978-1-943580-53-8 , March 2019, doi: 10.1364/OFC.2019.Th3F.5, Invited Paper
• Colja Schubert, Carlos Moises Castro Posada, Robert Elschner, Ronald Freund
  Challenges and Applications of THz Wireless Communication Systems,
  ITG-Tagung "Breitbandversorgung in Deutschland", Berlin, Germany, March 2019
• Felix Frey, Sebastian Stern, Johannes Fischer, Robert Fischer
  Four-Dimensional Hurwitz-Integer Constellations: Implementation Aspects and Pratical Results,
  ITG Fachgruppe „Angewandte Informationstheorie”, Ulm, Germany, March 2019, 33
• Gilda Raoof Mehrpoor, Carsten Schmidt-Langhorst, Benjamin Wohlfeil, Robert Elschner, Danish Rafique, Robert Emmerich, Annika Dochhan, Iria Lopez, Pedro Rito, Despoina Petousi, Dietmar Kissinger, Lars Zimmermann, Colja Schubert, Bernhard Schmauss, Michael Eiselt, Jörg-Peter Elbers
  64 GBd DP-Bipolar-8ASK Transmission over 120 km SSMF Employing Monolithically Integrated Segmented Driver and MZM in 0.25-µm SiGe BiCMOS Technology,
  Optical Fiber Communication Conference 2019, San Diego, California, United States, ISBN: 978-1-943580-53-8, March 2019, doi: 10.1364/OFC.2019.Tu2A.5
• Nikolay Ledentsov, Mikel Augustín, Lukasz Chorchos, Jörg-R. Kropp, V. A. Shchukin, Vladimir P. Kalosha, Matthias Koepp, Christoph Caspar, J.P. Turkiewicz, Nikolai N. Ledentsov
  Energy efficient 850-nm VCSEL based optical transmitter and receiver link capable of 56 Gbit/s NRZ operation,
  SPIE.Photonics West, San Francisco, California, USA, SPIE, March 2019, doi: 10.1117/12.2509916, paper 109380J
• Mustafa Sezer Erkilinc, D. Lavery, R.I. Killey, Carsten Schmidt-Langhorst, Robert Elschner, Colja Schubert
  Low-complexity Coherent ONU Designs for NG-PONs,
  ITG-Workshop "Modelling of Photonic Components & Systems" (ITG KT3.1), Meiningen, Germany, February 2019
• Felix Frey, Sebastian Stern, Johannes Fischer, Robert F. H. Fischer
  Two-Stage Dimension-Wise Coded Modulation for Four-Dimensional Hurwitz-Integer Constellations,
  SCC 2019 - 12th International ITG Conference on Systems, Communications and Coding, Rostock, Germany, ISBN: 978-3-8007-4862-4, February 2019, doi: 10.30420/454862034
• Simon Nellen, Carlos Moises Castro Posada, Lars Liebermeister, Robert Kohlhaas, Robert Elschner, Colja Schubert, Martin Schell, Björn Globisch, Ronald Freund
  PIN Photodiode Emitters for 32 GBd 16QAM wireless links at 300 GHz,
  44th International Conference on Infrared, Millimeter, and Terahertz Waves (RMMW 2019), Paris, France, January 2019, doi: 10.1109/IRMMW-THz43657.2019.9050608

2018

• Felix Frey, Robert Emmerich, Colja Schubert, Johannes Fischer, Robert F. H. Fischer
  Improved Perturbation-based Fiber Nonlinearity Compensation,
  44th European Conference on Optical Communication (ECOC), Rom, September 2018
• Pablo Wilke Berenguer, Peter Hellwig, Jonas Hilt, Dominic Schulz, Gerhard Kleinpeter, Johannes Fischer, Volker Jungnickel
  Real-Time Optical Wireless Communication: Field-Trial in an Industrial Production Environment,
  44th European Conference on Optical Communication (ECOC), Rom, September 2018, doi: 10.1109/ECOC.2018.8535137, Invited Paper
• Tomoyuki Kato, Shigeki Watanabe, Takahito Tanimura, Carsten Schmidt-Langhorst, Isaac Sackey, Robert Elschner
  Any-to-Any Signal Frequency Shifting over C-band Using Continuously Tuneable Optical Frequency Shifter,
  2018 European Conference on Optical Communication (ECOC), Rome, Italy, IEEE, September 2018, doi: 10.1109/ECOC.2018.8535183
• Christian Schmidt, Patrick Zielonka, Volker Jungnickel, Ronald Freund, Tobias Tannert, Markus Grözing, Manfred Berroth, Friedel Gerfers
  Behavioral Model for a High-Speed 2:1 Analog Multiplexer,
  2018 IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS), Windsor, ON, Canada, Canada , IEEE, August 2018, doi: 10.1109/MWSCAS.2018.8623931
• Johannes Fischer, Mattia Cantono, Vittorio Curri, Ralf-Peter Braun, Nelson Costa, João Pedro, Erwan Pincemin, Philippe Doaré, Claude Le Bouëtté, Antonio Napoli
  Maximizing the Capacity of Installed Optical Fiber Infrastructure Via Wideband Transmission,
  20th International Conference on Transparent Optical Networks (ICTON), Bucharest, Romania, July 2018, Invited Paper
• Johannes Fischer, Antonio Napoli, Nicola Calabretta, Nelson Costa, Silvio Abrate, João Pedro, Victor Lopez, Vittorio Curri, Darko Zibar, Erwan Pincemin, Sebastian Grot, Günther Roelkens, Chris Matrakidis, Wladek Forysiak
  Perspectives of Multi-band Optical Communication Systems,
  The 23rd OptoElectronics and Communications Conference (OECC), Jeju, Korea, July 2018, Invited Paper
• Johannes Fischer, Antonio Napoli, Nelson Costa, João Pedro, Silvio Abrate, Nicola Calabretta, Wladek Forysiak, Erwan Pincemin, Juan P.F.-P Gimenez, Chris Matrakidis, Günther Roelkens, Vittorio Curri
  Towards multiband optical systems,
  Signal Processing in Photonic Communications (SPPCom) , Zürich, Schweiz, July 2018
• Isaac Sackey, Robert Elschner, Carsten Schmidt-Langhorst, Robert Emmerich, Colja Schubert
  Practical Trade-Offs for Kramers-Kronig Reception,
  19. ITG-Fachtagung "Photonische Netze", Leipzig, Germany, VDE, ISBN: 978-3-8007-4684-2, June 2018
• Christoph Kottke, Christian Schmidt, Volker Jungnickel, Ronald Freund
  Performance of Bandwidth Extension Techniques for High-Speed Access Networks,
  Optical Fiber Communication Conference 2018, San Diego, California, United States, ISBN: 978-1-943580-38-5, June 2018, doi: 10.1364/OFC.2018.W4G.3, Invited Paper
• Isaac Sackey, Carsten Schmidt-Langhorst, Robert Emmerich, Robert Elschner, Tomoyuki Kato, T. Tanimura, Shigeki Watanabe, T. Hoshida, Colja Schubert
  Distributed Aggregation and Reception of a 400-Gb/s Net Rate Superchannel in a Single-Photodiode 110-GHz Kramers-Kronig Receiver,
  Optical Fiber Communication Conference (OFC 2018), San Diego, CA, USA, March 2018, PDP Th4C.7, postdeadline
• Robert Elschner, Robert Emmerich, Carsten Schmidt-Langhorst, Felix Frey, Pablo Wilke Berenguer, Johannes Fischer, Helmut Grießer, Danish Rafique, Jörg-Peter Elbers, Colja Schubert
  Improving Achievable Information Rates of 64-GBd PDM-64QAM by Nonlinear Transmitter Predistortion,
  OFC, San Diego (USA), pp. 1-3, March 2018, doi: https://doi.org/10.1364/OFC.2018.M1C.2
• Christoph Kottke, Christian Schmidt, Ronald Freund, Volker Jungnickel
  Bandwidth Extension Techniques for High-Speed Access Networks,
  OFC 2018, San Diego, CA, USA, March 2018, Invited Paper
• Christian Schmidt, Christoph Kottke, Ronald Freund, Volker Jungnickel
  Bandwidth Enhancement for an Optical Access Link by using a Frequency Interleaved DAC,
  OFC 2018, San Diego, March 2018
• T. Kato, S. Watanabe, T. Tanimura, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert, T. Hoshida
  Fiber-Optic Frequency Shifting of THz-Range WDM Signal Using Orthogonal Pump-Signal Polarization Configuration,
  Proc. Optical Fiber Communication Conference (OFC) 2018, San Diego, California, USA, March 2018, M3E.3
• Pablo Wilke Berenguer, Jonas Hilt, Peter Hellwig, Dominic Schulz, Johannes Fischer, Volker Jungnickel
  Analog Antenna Diversity for Reliable Optical Wireless Communication Systems,
  Global LiFi Congress 2018, Paris, France, February 2018

2017

• Farroukh Peykar Negar, Hans-Jürgen Kärcher, Thomas Sure, Nicolas Perlot
  Design and Concepts for a 12m Optical Communication Antenna,
  IEEE International Conference on Space Optical Systems and Applications (ICSOS), Naha, Okinawa, Japan , November 2017
• Pablo Wilke Berenguer, Johannes Fischer, Felix Frey, Colja Schubert
  Nonlinear Pre-Distortion of Transmitter Components,
  2017 IEEE Photonics Conference (IPC), Orlando, Florida, USA, October 2017, doi: 10.1109/IPCon.2017.8116173, Invited Paper
• Pablo Wilke Berenguer, Dominic Schulz, Johannes Fischer, Volker Jungnickel
  Optical Wireless MIMO Channel Measurements,
  IEEE Photonics Conference, Orlando, Florida, USA, October 2017
• Tobias Tannert, Xuan-Quang Du, Daniel Widmann, Markus Grözing, Manfred Berroth, Christian Schmidt, Christoph Caspar, Jung Han Choi, Volker Jungnickel, Ronald Freund
  A SiGe-HBT 2:1 Analog Multiplexer with more than 67 GHz Bandwidth,
  IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM), Miami, Florida, USA, October 2017, doi: 10.1109/BCTM.2017.8112931
• Isaac Sackey, Robert Elschner, Carsten Schmidt-Langhorst, Tomoyuki Kato, T. Tanimura, Shigeki Watanabe
  Fiber Nonlinearity Mitigation in 800-km Transmission of a 1.6-Tb/s Superchannel Using Waveband-Shift-Free Optical Phase Conjugation,
  43rd European Conference on Optical Communication (ECOC), Gothenburg, Sweden, September 2017
• Felix Frey, Lutz Molle, Robert Emmerich, Colja Schubert, Johannes Fischer, Robert F. H. Fischer
  Single-step Perturbation-based Nonlinearity Compensation of Intra- and Inter-Subcarrier Nonlinear Interference,
  43rd European Conference on Optical Communication (ECOC), Gothenburg, Sweden, September 2017
• Moritz Baier, Francisco M. Soares, Z. Zheng, Carsten Schmidt-Langhorst, Robert Elschner, Felix Frey, Marko Gruner, Johannes Fischer, Colja Schubert, Martin Moehrle, Norbert Grote, Martin Schell
  112-Gb/s PDM-PAM4 Generation and 80-km Transmission Using a Novel Monolithically Integrated Dual-Polarization Electro-Absorption Modulator InP PIC,
  43rd European Conference on Optical Communication (ECOC), Gothenburg, Sweden, September 2017
• Pablo Wilke Berenguer, Dominic Schulz, Johannes Fischer, Volker Jungnickel
  Distributed MIMO for Optical Wireless Communications,
  43rd European Conference on Optical Communication (ECOC), Gothenburg, Sweden, September 2017
• Jasper Rödiger, Nicolas Perlot, O. Benson, Ronald Freund
  Time-Frequency QKD over the Free-Space Channel,
  International Conference on Quantum Cryptography (QCrypt), Cambridge, United Kingdom, September 2017
• Carsten Schmidt-Langhorst, Robert Elschner, Isaac Sackey, Tomoyuki Kato, Takahito Tanimura, Shigeki Watanabe, Takeshi Hoshida, Colja Schubert
  Advanced Polarization-insensitive Optical Signal Processing Using Orthogonal Signal and Idler Fields,
  OSA Advanced Photonics 2017 , New Orleans, July 2017, doi: https://doi.org/10.1364/PS.2017.PTu1D.3, Invited Paper
• Carsten Schmidt-Langhorst, Robert Elschner, Isaac Sackey, Tomoyuki Kato, Takahito Tanimura, Shigeki Watanabe, Takeshi Hoshida, Colja Schubert
  Advanced Polarization-insensitive Optical Signal Processing Using Orthogonal Signal and Idler Fields,
  Photonics in Switching 2017, New Orleans, Louisiana United States, ISBN: 978-1-943580-30-9, July 2017, doi: 10.1364/PS.2017.PTu1D.3, PTu1D, Invited Paper
• Felix Frey, Florian Wäckerle, Johannes Fischer, Robert F. H. Fischer
  Optimized Detection and Decoding of 4D Signals for the Nonlinear Fiber-optical Channel,
  Signal Processing in Photonic Communications, New Orleans, Louisiana, United States, July 2017, Invited Paper
• Christoph Kottke, Christian Schmidt, Kai Habel, Volker Jungnickel, Ronald Freund
  Performance of Single- and Multi-Carrier Modulation with Additional Spectral Up-conversion for Wideband IM/DD Transmission,
  18. ITG-Fachtagung "Photonische Netze", Leipzig, Germany, VDE, ISBN: 978-3-8007-4427-5 , May 2017
• Malte Hinrichs, Luz Fernández del Rosal, Christoph Kottke, Volker Jungnickel
  Analog vs. Next-Generation Digital Fronthaul: How to Minimize Optical Bandwidth Utilization,
  International Conference on Optical Network Design and Modeling (ONDM), Budapest, Hungary, ISBN: 978-3-901882-93-7 , May 2017
• Matthias Koepp, Kai Habel, Volker Jungnickel
  Self-interference-tolerant Frequency Offset Estimation Technique for IM/DD-based OFDMA-PON Systems,
  Proc. 18. ITG-Fachtagung "Photonische Netze", Leipzig, Germany, May 2017
• Felix Frey, Robert Elschner, Johannes Fischer
  Estimation of Trends for Coherent DSP ASIC Power Dissipation for different bitrates and transmission reaches,
  18. ITG-Fachtagung Photonische Netze, Leipzig, Germany, May 2017
• Vahid Forutan, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert, Robert F. H. Fischer
  Towards Information-Theoretic Security in Optical Networks,
  18. ITG-Fachtagung "Photonische Netze", Leipzig, Germany, VDE, ISBN: 978-3-8007-4427-5 , May 2017
• Isaac Sackey, Robert Elschner, Carsten Schmidt-Langhorst, Tomoyuki Kato, T. Tanimura, S. Watanabe, T. Hoshida, Colja Schubert
  Novel Wavelength-Shift-Free Optical Phase Conjugator Used For Fiber Nonlinearity Mitigation in 200-Gb/s PDM-16QAM Transmission,
  Optical Fiber Communications Conference and Exhibition (OFC), Los Angeles, California, USA, IEEE, ISBN: 978-1-9435-8023-1, March 2017
• Jasper Rödiger, Nicolas Perlot, Fabian Beutel, O. Benson, Ronald Freund
  Discrete-Variable Time-Frequency Quantum Key Distribution for Satellite Communication,
  COST Action CA15220, Quantum Technologies in Space, Valetta, Malta, March 2017
• Veena Shivashankar, Christoph Kottke, Volker Jungnickel, Ronald Freund
  Investigation of Linear and Nonlinear Pre-equalization of VCSEL,
  11. ITG-Fachkonferenz "Breitbandversorgung in Deutschland", Berlin, Germany, VDE, ISBN: 978-3-8007-4397-1, March 2017
• Fabian Beutel, Jasper Rödiger, Nicolas Perlot, O. Benson, Ronald Freund
  Time-frequency QKD over free space,
  DPG Frühjahrstagung, Mainz, Germany, March 2017
• Felix Frey, Johannes Fischer
  On the frequency dependence of the FWM efficiency and its application to analytical channel models,
  ITG-Workshop 5.3.1 , München, February 2017
• Felix Frey, Robert Elschner, Carsten Schmidt-Langhorst, Robert Emmerich, Johannes Fischer, Colja Schubert, Robert F. H. Fischer
  Investigation of Nonlinear Inter-channel Interference in Heterogeneous Flexible Optical Networks,
  11th International ITG Conference on Systems, Communications and Coding (SCC), Hamburg, DE, ISBN: 978-3-8007-4362-9, February 2017
• C. Fuchs, Sylvain Poulenard, Nicolas Perlot, Jerome Riedi, Josep Perdigues
  Optimization and throughput estimation of optical ground networks for LEO-downlinks, GEO-feeder links and GEO-relays,
  SPIE LASE, San Francisco, California, USA, February 2017, doi: 10.1117/12.2254795
• Sylvain Poulenard, Alexandre Mègea, C. Fuchs, Nicolas Perlot, Jerome Riedi, Josep Perdigues
  Digital optical feeder links system for broadband geostationary satellite,
  SPIE LASE, San Francisco, California, USA, February 2017, doi: 10.1117/12.2255987
• Christian Schmidt, Christoph Kottke, Volker Jungnickel, Ronald Freund
  High-Speed Digital-to-Analog Converter Concepts,
  SPIE Photonics West, San Francisco, California, USA, January 2017, doi: 10.1117/12.2250359, Invited Paper

2016

• Christian Schmidt, Vicky H. Tanzil, Christoph Kottke, Ronald Freund, Volker Jungnickel
  Digital Signal Splitting among Multiple DACs for Analog Bandwidth Interleaving (ABI),
  IEEE International Conference on Electronics, Circuits and Systems (ICECS), Monte Carlo, Monaco, IEEE, ISBN: 978-1-5090-6113-6 , pp. 245 - 248, December 2016, doi: 10.1109/ICECS.2016.7841178
• Jasper Rödiger, Nicolas Perlot, O. Benson, Ronald Freund
  Benefits of time-frequency coding for Quantum Key Distribution,
  International Conference on Space Optics (ICSO), Biarritz, France, October 2016
• Isaac Sackey, Erik Liebig, Thomas Richter, A. Gajda, Lars Zimmermann, Klaus Petermann, Colja Schubert
  QPSK Phase-Regeneration in a Silicon Waveguide Using Phase-Sensitive Processing,
  European Conference on Optical Communication (ECOC), Dusseldorf, Germany, VDE, ISBN: 978-3-8007-4274-5 , pp. 659-661, September 2016, Invited Paper
• Carsten Schmidt-Langhorst, Robert Elschner, Tomoyuki Kato, T. Tanimura, Shigeki Watanabe, T. Hoshida, Colja Schubert, Thomas Richter
  Coherent Optical Subcarrier Processing and Add/Drop Multiplexing,
  European Conference on Optical Communication (ECOC), Dusseldorf, Germany, VDE, ISBN: 978-3-8007-4274-5 , pp. 616-618, September 2016, Invited Paper
• Christoph Kottke, C. Schmidt, Kai Habel, Volker Jungnickel
  178 Gb/s Short-Range Optical Transmission Based on OFDM, Electrical Up-Conversion and Signal Combining,
  European Conference on Optical Communication (ECOC), Düsseldorf, Germany, September 2016
• Saleem Alreesh, Carsten Schmidt-Langhorst, Robert Emmerich, Pablo Wilke Berenguer, Colja Schubert, Johannes Fischer
  Four-Dimensional Trellis Coded Modulation for Flexible Optical Transponders,
  European Conference on Optical Communication (ECOC), Dusseldorf, Germany, VDE, ISBN: 978-3-8007-4274-5, pp. 473-475, September 2016
• T. Kato, T. Tanimura, T. Hoshida, Thomas Richter, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert, S. Watanabe
  THz-Range Optical Frequency Shifter for Dual Polarization WDM Signals Using Frequency Conversion in Fibre,
  European Conference on Optical Communication (ECOC), Düsseldorf, Germany, September 2016, Invited Paper, upgraded
• Fabian Beutel, Jasper Rödiger, Nicolas Perlot, O. Benson, Ronald Freund
  Evaluation of Time-Frequency QKD Over Different Transmission Channels,
  Qcrypt, Washington, D.C., USA, September 2016
• Pablo Wilke Berenguer, Johannes Fischer, Volker Jungnickel
  The Benefit of Frequency-selective Rate Adaptation for Optical Wireless Communications,
  10th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing, Prag, Czech Republic, July 2016, Invited Paper
• Tomoyuki Kato, Robert Elschner, Thomas Richter, Carsten Schmidt-Langhorst, Colja Schubert, T. Tanimura, Shigeki Watanabe, Pablo Wilke Berenguer
  Subcarrier polarization manipulation by fiber frequency conversion,
  OptoElectronics and Communications Conference (OECC), Niigata, Japan, July 2016
• Robert Elschner
  PHY-Layer-Security – Bedrohungspotential und Lösungsansätze,
  0. ITG-Fachkonferenz "Breitbandversorgung in Deutschland", Berlin, Germany, April 2016, Invited Paper
• Markus Nölle, H. Möller, Colja Schubert, Andrew Robinson, S. Desbruslais, Jörg Schwartz, Ronald Freund
  Application and Benefits of Raman-Enhanced Amplification Schemes in Tomorrow’s Optical Submarine Systems,
  SubOptic 2016, Dubai, UE, pp. 18-21, April 2016
• Luz Fernández del Rosal, Péter Farkas, Ronald Freund, Kai Habel, Volker Jungnickel, Stefan Weide, Pablo Wilke Berenguer
  Multi-Gigabit Real-Time Signal Processing For Future Converged Networks,
  10. ITG-Fachkonferenz "Breitbandversorgung in Deutschland", Berlin, Germany, April 2016
• Christian Schmidt, Christoph Kottke, Volker Jungnickel
  Enhancing the Bandwidth of DACs by Analog Bandwidth Interleaving,
  ITG Breitbandversorgung Deutschland, Berlin, Germany, March 2016
• Alessandro Aimone, I. Garcia Lopez, Saleem Alreesh, P. Rito, T. Brast, V. Höhns, Gerrit Fiol, Marko Gruner, Johannes Fischer, J. Honecker, Andreas-G. Steffan, D. Kissinger, A. Cagri Ulusoy, Martin Schell
  DAC-free Ultra-Low-Power Dual-Polarization 64-QAM Transmission with InP IQ Segmented MZM Module,
  Optical Fiber Communication Conference (OFC), Anaheim, USA, p. 3, March 2016
• T. Kato, T. Tanimura, T. Hoshida, Thomas Richter, Carsten Schmidt-Langhorst, Robert Elschner, Colja Schubert, S. Watanabe
  In-line optical signal multiplexing by polarization-insensitive fiber frequency conversion,
  OFC 2016 , Anaheim, CA, USA, March 2016
• Saleem Alreesh, Carsten Schmidt-Langhorst, Robert Emmerich, Pablo Wilke Berenguer, Colja Schubert, Johannes Fischer
  Multidimensional Trellis coded modulation for flexible transponders,
  Die ITG Fachgruppe 5.3.1 „Modellierung photonischer Komponenten und Systeme“, Berlin, Germany, VDE, February 2016

2015

• Pablo Wilke Berenguer, Johannes Fischer, Lutz Molle, Markus Nölle, Colja Schubert
  Nonlinear digital pre-distortion of transmitter components,
  1st Tobias Eriksson Workshop (TEW) 2015, Gothenburg, Sweden, December 2015, Invited Paper
• Felix Frey, Robert Elschner, Johannes Fischer, Markus Nölle, Carsten Schmidt-Langhorst, Colja Schubert
  Data-Aided Signal Processing for Format Flexible Transceivers,
  1st Tobias Eriksson Workshop (TEW) 2015, Gothenburg, Sweden, December 2015
• Volker Jungnickel, et al.
  A European view on the next generation optical wireless communication standard,
  IEEE Conference on Standards for Communications and Networking (CSCN), Tokyo, Japan, pp. 106-111, October 2015, doi: 10.1109/CSCN.2015.7390429, Invited Paper
• Thomas Richter, Saleem Alreesh, Robert Elschner, Johannes Fischer, Tomoyuki Kato, Lutz Molle, Carsten Schmidt-Langhorst, Colja Schubert, T. Tanimura, Shigeki Watanabe
  Distributed 1-Tb/s all-optical aggregation capacity in 125-GHz optical bandwidth by frequency conversion in fiber,
  41st European Conference on Optical Communication (ECOC) 2015, Valencia, Spain, October 2015, PDP.2.5, postdeadline
• Carsten Schmidt-Langhorst, Colja Schubert, Robert Elschner, Felix Frey, Robert Emmerich
  Experimental Analysis of Nonlinear Interference Noise in Heterogeneous Flex-Grid WDM Transmission,
  41st European Conference on Optical Communication (ECOC), Valencia, Spain, September 2015, Tu.1.4.3
• Isaac Sackey, Robert Elschner, Mahmoud Jazayerifar, Christian Meuer, Klaus Petermann, Thomas Richter, Colja Schubert
  Non-reciprocal gain due to counter-propagating pumps in a polarization-independent FOPA with diversity loop,
  41st European Conference on Optical Communication (ECOC) 2015, Valencia, Spain, September 2015
• Volker Jungnickel, Christos Alexakis, Liane Grobe, Jonas Hilt, Anagnostis Paraskevopoulos, Michael Schlosser, Dominic Schulz
  Optical Wireless Communication for Backhaul and Access,
  European Conference on Optical Communication (ECOC) 2015, Valencia, Spain, September 2015, Invited Paper
• Pablo Wilke Berenguer, Talha Rahman, Antonio Napoli, Markus Nölle, Johannes Fischer, Colja Schubert
  Nonlinear digital pre-distortion of transmitter components,
  41th European Conference and Exhibition on Optical Communication, Valencia, Spain, September 2015, Th.2.6.3
• Talha Rahman, Marc Bohn, Francesco Fresi, Gianluca Meloni, Antonio Napoli, Markus Nölle, Luca Poti, Danish Rafique, Nicola Sambo, Colja Schubert
  Experimental Comparison of 1.28 Tb/s Nyquist WDM vs. Time-Frequency Packing,
  Photonics in Switching, Florence, Italy, September 2015
• Thomas Richter, Robert Elschner, Tomoyuki Kato, Carsten Schmidt-Langhorst, Colja Schubert, T. Tanimura, Shigeki Watanabe
  Spatially distributed aggregation of a polarization-division multiplexed superchannel by frequency conversion in fiber,
  41st European Conference and Exhibition on Optical Communication (ECOC), Valencia, Spain, ISBN: 978-8-4608-1741-3, September 2015, doi: 10.1109/ECOC.2015.7341856, Th.1.5.2, contirbuted
• D. Giggenbach, Ronald Freund, C. Fuchs, R. Mata-Calvo, Nicolas Perlot, J. Poliak, F. Rein, Thomas Richter
  Preliminary results of terabit-per-second long-range free-space optical transmission experiment THRUST,
  Advanced Free-Space Optical Communication Techniques and Applications (9647B), SPIE Security + Defense 20151, Toulouse, France, September 2015, 9647-21, Invited Paper
• Kai Habel, Robert Elschner, Luz Fernández del Rosal, Johannes Fischer, Ronald Freund, Felix Frey, Jonas Hilt, Volker Jungnickel, Colja Schubert, Stefan Weide
  5 Gbit/s real-time processing using π/4-shift DQPSK for bidirectional radio-over-fibre system,
  17th International Conference on Transparent Optical Networks (ICTON), Budapest, Hungary, July 2015, doi: 10.1109/ICTON.2015.7193479, Invited Paper
• Mahmoud Jazayerifar, Isaac Sackey, Robert Elschner, Francesco Da Ros, Thomas Richter, Christian Meuer, Christophe Peucheret, Colja Schubert, Klaus Petermann
  Prospectives of long-haul WDM transmission systems based on phase-insensitive fiber-optic parametric amplifiers,
  IEEE Photonics Society Tropicals Series Conference 2015, Nassau, Bahamas, July 2015, TuF4.1, DOI: 10.1109/PHOSST.2015.7248272
• Francesco Da Ros, Isaac Sackey, Mahmoud Jazayerifar, Thomas Richter, Robert Elschner, Christian Meuer, Markus Nölle, Lutz Molle, Klaus Petermann, Johannes Fischer, Colja Schubert, Christophe Peucheret
  Optical phase conjugation for nonlinearity compensation in WDM PDM 16-QAM transmission over dispersion-compensated and dispersion-uncompensated links,
  IEEE Photonics Society Summer Topicals Series Conference, Nassau, Bahamas, July 2015, MF1.1, Invited Paper
• Tomoyuki Kato, T. Tanimura, Thomas Richter, Carsten Schmidt-Langhorst, Robert Elschner, Shigeki Watanabe, Colja Schubert
  Efficient signal multiplexing scheme based on optical signal processing,
  18th OptoElectronics and Communications Conference (OECC), Shanghai, China, July 2015, JThB21, Invited Paper
• Moritz Baier, Francisco M. Soares, Christian Meuer, Tom Gaertner, Colja Schubert, Martin Moehrle, Norbert Grote
  50 Gbit/s PAM-4 Transmission Using Directly Modulated Laser Made on Generic InP Integration Platform,
  27th Int. Conf. on Indium Phosphide and Related Materials (IPRM), Santa Barbara, California, USA, June 2015, We2O7.3
• Jasper Rödiger, Nicolas Perlot, M. Leifgen, Robert Elschner, R. Mottola, O. Benson, Ronald Freund
  Large-Alphabet Time-Frequency Quantum Key Distribution,
  QCrypt 2015, Tokyo, Japan, June 2015
• Patricia Layec, Marc Bohn, A. Dupas, Antonio D´Errico, Josep-M. Fàbrega, Johannes Fischer, Francesco Fresi, Emilio Hugues-Salas, Gianluca Meloni, Antonio Napoli, Markus Nölle, Danish Rafique, Talha Rahman, Nicola SAMBO, Colja Schubert, Dimitra Simeonidou, Michela SVALUTO MOREOLO, S. Yan, Y. Yan, Georgios Zervas
  IDEALIST data plane solutions for elastic optical networks,
  European Conference on Networks and Communications (EuCNC) 2015, Paris, France, June 2015
• Kseniia Goroshko, Konstantinos Manolakis, Liane Grobe, Volker Jungnickel
  Low-latency synchronization for OFDM-based visible light communication,
  IEEE International Conference on Communication Workshop (ICCW), London, UK, IEEE, ISBN: 978-1-4673-6305-1, June 2015, doi: 10.1109/ICCW.2015.7247362
• S. Yan, P.J. Argibay-Losada, Josep-M. Fàbrega, Emilio Hugues-Salas, F. Jimenez Arribas, K. Kitayama, Christoph Kottke, V. López, L. Nadal, M. Nishihara, Ryo Okabe, S. Peng, B. R. Rofoee, J.C. Rasmussen, Michael Schlosser, Y. Shu, Dimitra Simeonidou, Michela SVALUTO MOREOLO, T. Takahara, T. Tanaka, Y. Yan, Y. Yoshida, Georgios Zervas
  100G Beyond Ethernet Transport for Inter- and Intra-DCN communication with Solutions and Optical Enabling Technologies in the ICT STRAUSS Project,
  European Conference on Networks and Communications (EuCNC), Paris, France, June 2015
• Saleem Alreesh, Robert Elschner, Johannes Fischer, Felix Frey, Carsten Schmidt-Langhorst, Colja Schubert, Pablo Wilke Berenguer
  Transmission experiment of 2048SP-QAM Nyquist-WDM signals,
  16. ITG Fachtagung "Photonische Netze" 2015, Leipzig, Germany, May 2015
• Robert Elschner, Felix Frey, Carsten Schmidt-Langhorst, Johannes Fischer, Colja Schubert
  FPGA Implementation of a Data-Aided Single-Carrier Frequency-Domain Equalizer for Format-Flexible Receivers,
  16. ITG Konferenz "Photonische Netze" 2015, Leipzig, Germany, May 2015
• Isaac Sackey, Markus Nölle, Thomas Richter, Johannes Fischer, Mahmoud Jazayerifar, Klaus Petermann, Colja Schubert
  Evaluation of Kerr nonlinearity mitigation based on digital backpropagation and digital coherent superposition,
  16. ITG Konferenz "Photonische Netze" 2015, Leipzig, Germany, May 2015
• Dominic Schulz, Christos Alexakis, Ronald Freund, Jonas Hilt, Volker Jungnickel, Michael Schlosser
  Initial Outdoor Trials with Optical Wireless Links for Small-Cell Backhauling,
  16. ITG Konferenz "Photonische Netze" 2015, Leipzig, Germany, May 2015
• Pablo Wilke Berenguer, Isaac Sackey, Colja Schubert, Johannes Fischer
  Quantization of Volterra Kernel coefficients for reduced complexity nonlinear compensators,
  16. ITG Konferenz "Photonische Netze" 2015, Leipzig, Germany, May 2015, paper
• Markus Nölle, Felix Frey, Robert Elschner, Carsten Schmidt-Langhorst, Johannes Fischer, Colja Schubert
  Performance of CAZAC Training Sequences in Data-Aided Optical Transmission Systems,
  16. ITG Konferenz "Photonische Netze" 2015, Leipzig, Germany, May 2015
• Emilio Riccardi, Marc Bohn, Piero CASTOLDI, Antonio D´Errico, Josep-M. Fàbrega, Johannes Fischer, Matthias Gunkel, Emilio Hugues-Salas, Andrew Lord, Antonio Napoli, Markus Nölle, Annachiara Pagano, J. Palacios, Danish Rafique, Talha Rahman, Nicola SAMBO, Dimitra Simeonidou, Michela SVALUTO MOREOLO, Georgios Zervas
  Sliceable Bandwidth Variable Transponders for Elastic Optical Networks: The Idealist Vision,
  Fotonica Conference, Torino, Italy, May 2015
• Christoph Caspar, Ronald Freund, Volker Jungnickel, Jörg-R. Kropp, Nikolay Ledentsov, Vitaly-A. Shchukin
  High speed transmission over Multimode Fiber with direct modulated single-mode VCSEL,
  9. ITG Fachkonferenz „Breitbandversorgung in Deutschland“, Berlin, Deutschland, April 2015
• Dominic Schulz, Christos Alexakis, Ronald Freund, Kai Habel, Jonas Hilt, Volker Jungnickel, Michael Schlosser
  Low Cost Optical Wireless Links for Low Latency Backhauling,
  9. ITG Fachkonferenz "Breitbandversorgung für Deutschland", Berlin, Germany, April 2015
• Carsten Schmidt-Langhorst, Robert Elschner, Tomoyuki Kato, Thomas Richter, Colja Schubert, T. Tanimura, Shigeki Watanabe
  Versatile coherent in-line 4-, 16-, 32-QAM subcarrier add/drop-multiplexing by optical frequency conversion,
  Proc. Optical Fiber Communication Conference (OFC) 2015, Los Angeles, California, USA, March 2015, doi: 10.1364/OFC.2015.M3F.1, M3F.1
• Dominic Schulz, Christos Alexakis, Ronald Freund, Kai Habel, Jonas Hilt, Volker Jungnickel, Michael Schlosser
  Optical Wireless LED Link for the Backhaul of Small Cells,
  Proc. Optical Fiber Communication Conference (OFC) 2015, Los Angeles, California, USA, March 2015
• Markus Nölle, Robert Elschner, Johannes Fischer, Felix Frey, Carsten Schmidt-Langhorst, Colja Schubert
  Investigation of CAZAC Sequences for Data-Aided Channel Estimation Considering Nonlinear Optical Transmission,
  Proc. Optical Fiber Communication Conference (OFC 2015), Los Angeles, California, USA, March 2015, doi: 10.1364/OFC.2015.Th3G.2
• Tomoyuki Kato, Robert Elschner, Thomas Richter, Carsten Schmidt-Langhorst, Colja Schubert, T. Tanimura, Shigeki Watanabe
  Broadband coherent-optical add/drop multiplexing over 400-GHz bandwidth by fiber frequency conversion,
  Proc. Optical Fiber Communication Conference (OFC) 2015, Los Angeles, California, USA, March 2015, doi: 10.1364/OFC.2015.M3F.2, M3F.2
• Thomas Richter, Robert Elschner, Tomoyuki Kato, Carsten Schmidt-Langhorst, Colja Schubert, T. Tanimura, Shigeki Watanabe
  Generation of ultra-dense superchannels using frequency conversion in optical fibers,
  Proc. Optical Fiber Communication Conference (OFC) 2015, Los Angeles, California, USA, March 2015, doi: 10.1364/OFC.2015.W3C.3, W3C.3, Invited Paper
• Zhixin Liu, Shaif-ul Alam, Martin Becker, Yong Chen, Alex-M. Heidt, Brian Kelly, Zhihong Li, John O´Carroll, Marco Petrovich, Richard Phelan, Francesco Poletti, David-J. Richardson, Thomas Richter, Colja Schubert, Radan Slavík, Natalie-V. Wheeler, John-P. Wooler
  52.6 Gbit/s single-channel directly-modulated optical transmitter for 2-µm spectral region,
  Proc. Optical Fiber Communication Conference (OFC) 2015, Los Angeles, California, USA, March 2015, Th1E.6
• Zhixin Liu, David-J. Richardson, Thomas Richter, Colja Schubert, Radan Slavík
  Practical considerations on discrete multi-tone transmission for cost-effective access networks,
  Proc. Optical Fiber Communication Conference (OFC) 2015, Los Angeles, California, USA, March 2015, M3J4
• Holger Schmeckebier, Dejan Arsenijevic, Dieter Bimberg, René Bonk, S. Koenig, C. Koos, B. Lingnau, K. Lüdge, Christian Meuer, Th. Pfeiffer, Colja Schubert, Mirko Stubenrauch, Anissa Zeghuzi
  Ultra-Broadband Bidirectional Dual-Band Quantum Dot Semiconductor Optical Amplifier,
  Proc. Optical Fiber Communication Conference (OFC) 2015, Los Angeles, California, USA, March 2015, Tu3I.7
• Brau Gomez Saavedra, Heinz-Gunter Bach, Jung Han Choi, Marko Gruner, Christian Meuer, Martin Schell, Colja Schubert, Karl-Otto Velthaus, Norman Wolf, Lei Yan
  First 105 Gb/s Low Power, Small Footprint PAM-8 Impedance-engineered TOSA with InP MZ-Modulator and Customized Driver IC using Predistortion,
  Proc. Optical Fiber Communication Conference (OFC) 2015, Los Angeles, California, USA , March 2015, doi: 10.1364/OFC.2015.Th4E.4, Th4.4
• Tobias A. Eriksson, Peter A. Andrekson, Erik Agrell, Saleem Alreesh, Pablo Wilke Berenguer, Johannes Fischer, Felix Frey, Magnus Karlsson, Carsten Schmidt-Langhorst, Colja Schubert
  Experimental Investigation of a Four-Dimensional 256-ary Lattice-based Modulation Format,
  Proc. Optical Fiber Communication Conference (OFC 2015), Los Angeles, California, USA, March 2015
• Zifeng Wu, Johannes Fischer, Berthold Lankl
  Experimental Investigation of Polar Code Performance for Coherent UDWDM PONs,
  Proc. Optical Fiber Communication Conference (OFC) 2015, Los Angeles, California, USA, March 2015
• Nikolay Ledentsov, S. Burger, Christoph Caspar, K.D. Choquette, Z. Feng, Ronald Freund, Jörg-R. Kropp, Y. Ma, F. Schmidt, Q. Shaofeng, Vitaly-A. Shchukin, G. Steinle, J.P. Turkiewicz, B. Wu
  High-speed modulation, wavelength, and mode control in vertical-cavity surface-emitting lasers,
  Proc. SPIE 9381 (Photonics West), San Francisco, California, USA, February 2015, 9381-14, Invited Paper

2014

• Francesco Da Ros, A. Abboud, J. Bruns, C. G. Schäffer, Christian Meuer, Lutz Molle, Markus Nölle, Klaus Petermann, A. Rahim, Isaac Sackey, Colja Schubert, Sebastian Schwarz, K. Voigt, G. Winzer, Lars Zimmermann
  Experimental demonstration of an OFDM receiver based on a silicon-nanophotonic discrete Fourier transform filter,
  2014 IEEE Photonics Conference, San Diego, California USA, IEEE, October 2014, doi: 10.1109/IPCon.2014.6995253, MG2.5
• Isaac Sackey, Francesco Da Ros, Robert Elschner, Mahmoud Jazayerifar, Christian Meuer, Klaus Petermann, Christophe Peucheret, Thomas Richter, Colja Schubert
  Design and performance evaluation of an OPC device using a dual-pump polarization-independent FOPA,
  40th European Conference and Exhibition on Optical Communication 2014, Cannnes, France, September 2014, doi: 10.1109/ECOC.2014.6963845, Tu.1.4.4
• Johannes Fischer, Saleem Alreesh, Robert Elschner, Felix Frey, Lutz Molle, Markus Nölle, Carsten Schmidt-Langhorst, Colja Schubert, Pablo Wilke Berenguer
  Transmission of 512SP-QAM Nyquist-WDM signals,
  40th European Conference and Exhibition on Optical Communication 2014, Cannes, France, September 2014, doi: 10.1109/ECOC.2014.6964093, Tu.3.3.2
• Felix Frey, Robert Elschner, Johannes Fischer, Colja Schubert
  Efficient Real-time Implementation of a Channelizer Filter with a Weighted Overlap-Add Approach,
  40th European Conference and Exhibition on Optical Communication 2014, Cannnes, France, September 2014, doi: 10.1109/ECOC.2014.6964101
• Thomas Richter, Robert Elschner, Tomoyuki Kato, Carsten Schmidt-Langhorst, Colja Schubert, T. Tanimura, Shigeki Watanabe
  Tolerances for add/drop operation of a coherent multiplexing node based on fiber frequency conversion,
  40th European Conference and Exhibition on Optical Communication 2014, Cannnes,France, September 2014, doi: 10.1109/ECOC.2014.6963828, P.3.2
• Francesco Da Ros, Robert Elschner, Mahmoud Jazayerifar, Christian Meuer, Markus Nölle, Klaus Petermann, Christophe Peucheret, Thomas Richter, Isaac Sackey, Colja Schubert
  Kerr nonlinearity compensation in a 5×28-GBd PDM 16-QAM WDM system using fiber-based optical phase conjugation,
  40th European Conference and Exhibition on Optical Communication 2014, Cannnes,France, September 2014, P.5.3
• Mahmoud Jazayerifar, Robert Elschner, Christian Meuer, Klaus Petermann, Isaac Sackey, Colja Schubert, S. Warm
  Impact of SBS on polarization-insensitive single-pump optical parametric amplifiers based on a diversity loop scheme,
  40th European Conference and Exhibition on Optical Communication 2014, Cannnes,France, September 2014, doi: 10.1109/ECOC.2014.6963968, Tu.4.6.4
• Nuno Sequeira André, Hadrien Louchet, Kai Habel, A. Richter
  33% Capacity Improvement of a Direct Modulation Direct Detection OFDM Link using Adaptive Volterra Equalization,
  40th European Conference and Exhibition on Optical Communicatio, Cannes, France, September 2014, doi: 10.1109/ECOC.2014.6964078
• Robert Elschner, Felix Frey, Carsten Schmidt-Langhorst, Johannes Fischer, Colja Schubert
  Data-Aided DSP for Flexible Transceivers,
  Signal Processing in Photonic Communications (SPPCom), San Diego, USA, July 2014, SW1C.1, Invited Paper
• T. Roethlingshoefer, Thomas Richter, G. Onishchukov, Colja Schubert, B. Schmauss, G. Leuchs
  All-optical multilevel amplitude and phase regeneration,
  IEEE Photonics Society Summer Topicals Series Conference, Montreal, Canada, IEEE, July 2014, MD2.3
• R. Nouroozi, H. Suche, H. Hu, Thomas Richter, A. Babazadeh, Colja Schubert, W. Sohler
  Efficient ultra-fast all-optical wavelength converters with Ti:PPLN waveguides,
  16th International Conference on Transparent Optical Networks (ICTON) 2014, Graz, Austria, July 2014, PICAW I-2, Invited Paper
• Mike Wolf, Sher Ali Cheema, Martin Haardt, Liane Grobe
  On the Performance of Block Transmission Schemes in Optical Channels with a Gaussian Profile,
  Proc. Int. Conf. Transparent Optical Networks (ICTON) 2014, Graz, Austria, July 2014, Invited Paper
• Carlos Bock, Michael C. Parker, Stuart D. Walker, Jordi Ferrer, Kai Habel, Volker Jungnickel, David Levi, Victor Marques, Tiago Mendes
  Techno-economics and performance of convergent radio and fibre architectures,
  16th International Conference on Transparent Optical Networks (ICTON) 2014, Graz, Austria, July 2014, doi: 10.1109/ICTON.2014.6876550, Invited Paper
• Konstantinos Manolakis, Miguel Angel Gutierrez Estevez, Volker Jungnickel
  Adaptive Modulation and Turbo Coding for 3GPP LTE Systems with Limited Feedback,
  79th Vehicular Technology Conference (VTC - Spring), Seoul, South Korea, IEEE, ISBN: 978-1-4799-4482-8, p. 5, May 2014, doi: 10.1109/VTCSpring.2014.7022809
• Johannes Fischer, Robert Elschner, Felix Frey, Jonas Hilt, Christoph Kottke, Colja Schubert, Zifeng Wu, Daniel Schmidt, Berthold Lankl
  Digital signal processing for coherent UDWDM passive optical networks,
  ITG-Fachtagung "Photonische Netze", Leipzig, Germany, May 2014
• Isaac Sackey, Robert Elschner, Mahmoud Jazayerifar, Christian Meuer, Lutz Molle, Markus Nölle, Klaus Petermann, Thomas Richter, Colja Schubert, S. Warm
  Characterization of a fiber-optical parametric amplifier in a 5 x 28-GBd 16-QAM DWDM system,
  Proc. Optical Fiber Communication Conference (OFC) 2014, San Francisco, USA, March 2014, doi: 10.1364/OFC.2014.W3E.3, Tu3A.1
• Antonio Napoli, Danish Rafique, Bernhard Spinnler, Maxim Kuschnerov, Markus Nölle, Marc Bohn
  Performance Dependence of Single-Carrier Digital Back-Propagation on Fiber Types and Data Rates,
  Proc. Optical Fiber Communication Conference (OFC 2014), San Francisco, USA, March 2014
• T. Tanimura, Robert Elschner, Tomoyuki Kato, S. Oda, Ryo Okabe, J.C. Rasmussen, Thomas Richter, Carsten Schmidt-Langhorst, Colja Schubert, Shigeki Watanabe
  Coherent reception and 126 GHz bandwidth digital signal processing of CO-OFDM superchannel generated by fiber frequency conversion,
  Proc. Optical Fiber Communication Conference (OFC) 2014, San Francisco, USA, March 2014, doi: 10.1364/OFC.2014.Tu3A.1, Tu3A.1
• Markus Nölle, Felix Frey, Robert Elschner, Carsten Schmidt-Langhorst, Antonio Napoli, Colja Schubert
  Performance Comparison of Different 8QAM Constellations for the Use in Flexible Optical Networks,
  Proc. Optical Fiber Communication Conference (OFC) 2014, San Francisco, USA, March 2014, W3B.2
• Thomas Richter, Robert Elschner, Tomoyuki Kato, Carsten Schmidt-Langhorst, Colja Schubert, Shigeki Watanabe
  Distributed generation of a 400-Gb/s Nyquist 16QAM dense superchannel by fiber-frequency conversion,
  Proc. Optical Fiber Communication Conference (OFC) 2014, San Francisco, USA, March 2014, doi: 10.1364/OFC.2014.Th1D.3, Th1D.3
• Isaac Sackey, Markus Nölle, Thomas Richter, Johannes Fischer, Mahmoud Jazayerifar, Klaus Petermann, Colja Schubert
  Evaluation of Kerr nonlinearity mitigation based on digital backpropagation and digital coherent superposition,
  15. ITG-Workshop 5.3.1 "Optische Multiplextechniken", Berlin, Germany, February 2014
• Felix Frey, Robert Elschner, Johannes Fischer, Colja Schubert
  Efficient Digital Down-Conversion of Multicarrier Signals with a Weigthed Overlap-Add Filterbank,
  15. ITG-Workshop 5.3.1 "Optische Multiplextechniken", Berlin,Germany, February 2014, Berlin,20.-21. Februar 2014
• Pablo Wilke Berenguer, Lutz Molle, Johannes Fischer, Colja Schubert
  Digitale Vorverzerrung für die Linearisierung von Treiberverstärkern,
  15. ITG-Workshop 5.3.1 "Optische Multiplextechniken", Berlin, Germany, February 2014, 20.-21. Februar 2014
• T. Roethlingshoefer, G. Leuchs, G. Onishchukov, Thomas Richter, B. Schmauss, Colja Schubert, B. Stiller
  All-optical signal regeneration of advanced modulation formats ,
  Proc. SPIE 8964, Nonlinear Frequency Generation and Conversion: Materials, Devices and Applications XIII, San Francisco, USA, February 2014, Invited Paper

2013

• Liane Grobe, Klaus-Dieter Langer
  Block-Based PAM with Frequency Domain Equalization in Visible Light Communications,
  IEEE Globecom 2013, 4th Workshop on Optical Wireless Communications, Atlanta, Georgia, USA, IEEE, pp. 1075-1080, December 2013
• Christian Ruprecht, Kai Habel, Johannes von Hoyningen-Huene, Y. Chen, Norbert Hanik, Werner Rosenkranz
  Timing Advance Tracking for Coherent OFDMA-PON Upstream System,
  Asia Communications and Photonics Conference, ACP2013, Beijing, China, November 2013
• Thomas Richter
  Generation and optical processing of 100-GBd QAM signals,
  6th International Symposium on Ultrafast Photonic Technologies,University of Rochester, Rochester,England, October 2013, ,Oct. 21-22,2013; available online: http://www.optics.rochester.edu/workgroups/knox/myweb/ISUPT2013/archive/Richter.pdf (last check August 2014)
• Saleem Alreesh, Johannes Fischer, Pablo Wilke Berenguer, Colja Schubert
  Blind Adaptive Equalization for 6PolSK-QPSK Signals,
  Proc. 39th European Conference on Optical Communication (ECOC) 2013, London, UK, September 2013, Mo.4.D.3
• Carsten Schmidt-Langhorst, Felix Frey, Markus Nölle, Robert Elschner, Christian Meuer, Pablo Wilke Berenguer, Colja Schubert
  Optimization of Subcarrier Spacing of 400-Gb/s Dual-Carrier Nyquist PDM-16QAM in a Flexgrid Scenario,
  Proc. 39th European Conference on Optical Communication (ECOC) 2013, London, UK, September 2013, P.5.1
• Volker Jungnickel, Liane Grobe
  Localized SC-FDMA with constant envelope,
  IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), London, UK, IEEE, pp. 24-29, September 2013, Sept. 2013
• Christoph Kottke, Michael Eiselt, Jörg-Peter Elbers, Helmut Grießer, Kai Habel, Werner Rosenkranz, Johannes von Hoyningen-Huene
  Coherent SCM-WDM-PON System with OFDM or DQPSK using SSB Modulation and Wavelength Reuse,
  Proc. 39th European Conference on Optical Communication (ECOC) 2013, London, UK, September 2013
• Johannes Fischer, Saleem Alreesh, Robert Elschner, Felix Frey, Markus Nölle, Colja Schubert
  Bandwidth-Variable Transceivers Based on 4D Modulation Formats for Future Flexible Networks,
  Proc. 39th European Conference on Optical Communication (ECOC) 2013, London, UK, September 2013, Tu.3.C.1, Invited Paper
• Thomas Richter, Robert Elschner, Colja Schubert
  QAM phase-regeneration in a phase-sensitive fiber-amplifier,
  Proc. 39th European Conference on Optical Communication (ECOC) 2013, London, UK, September 2013, We.3.A.2
• Tomoyuki Kato, Ryo Okabe, Thomas Richter, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert, Shigeki Watanabe
  Precise remote optical carrier addition into 200-Gb/s CO-OFDM channel using fiber frequency conversion,
  Proc. 39th European Conference on Optical Communication (ECOC) 2013, London, UK, September 2013, We.1.C.6
• Robert Elschner, Felix Frey, Carsten Schmidt-Langhorst, Johannes Fischer, Markus Nölle, Colja Schubert
  Software-defined Transponders for Future Flexible Grid Networks,
  Photonic Networks and Devices (NETWORKS 2013), Rio Grande, USA, July 2013, NT2C.4, Invited Paper
• Thomas Richter, Robert Elschner, Colja Schubert
  Phase-regeneration of 2ASK-BPSK in a one-mode phase-sensitive amplifier,
  IEEE Photonics Society Summer Topicals Meeting Series Conference, Waikaloa, USA, IEEE, July 2013, TuD2.2
• T. Roethlingshoefer, Thomas Richter, Colja Schubert, G. Onishchukov, B. Schmauss, G. Leuchs
  Phase-preserving amplitude regeneration of a two-level-amplitude modulation format,
  10th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), Kyoto, Japan, June 2013, TuPO-1
• Tomoyuki Kato, Ryo Okabe, Thomas Richter, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert, Shigeki Watanabe
  Removal of local frequency fluctuation in distributed coherent-optical OFDM,
  18th OptoElectronics and Communications Conference (OECC), Kyoto, Japan, June 2013, MO1-7
• Carlos Bock, Michael C. Parker, Stuart D. Walker, Sergi Figuerola, Kai Habel, Volker Jungnickel, David Levi, Victor Marques, Tiago Mendes
  Convergent radio and fibre architectures for high-speed access,
  International Conference on Transparent Optical Networks (ICTON), Cartagena, Spain, June 2013, doi: 10.1109/ICTON.2013.6602740, Invited Paper
• Nuno Sequeira André, Kai Habel, Hadrien Louchet, A. Richter
  Equalization Techniques for High-speed OFDM-based Access Systems Using Direct Modulation and Direct Detection,
  15th International Conference on Transparent Optical Networks, ICTON, Cartagena, Spain, June 2013, doi: 10.1109/ICTON.2013.6602971, Invited Paper
• Robert Elschner, Felix Frey, Christian Meuer, Johannes Fischer, Saleem Alreesh, Carsten Schmidt-Langhorst, Lutz Molle, T. Tanimura, Colja Schubert
  Data-Aided Digital Signal Processing for Format-Flexible Transponders,
  Proc. 14. ITG-Fachtagung "Photonische Netze" 2013, Leipzig, Germany, pp. 141-145, May 2013
• Johannes Fischer, Saleem Alreesh, T. Tanimura, Robert Elschner, Felix Frey, Christian Meuer, Lutz Molle, Carsten Schmidt-Langhorst, Colja Schubert
  Four-Dimensional Coded Modulation: 6PolSK-QPSK,
  Proc. 14. ITG-Fachtagung "Photonische Netze" 2013, Leipzig, Germany, May 2013, 26
• Mahmoud Jazayerifar, S. Warm, Robert Elschner, D. Kroushkov, Isaac Sackey, Christian Meuer, Colja Schubert, Klaus Petermann
  Investigation of Nonlinear Effects in Long-Haul DWDM Communication Systems with Fiber Optic Parametric In-line Amplifiers,
  Proc. 14. ITG-Fachtagung "Photonische Netze" 2013, Leipzig, Germany, pp. 51-53, May 2013
• Lutz Molle, Markus Nölle, Colja Schubert
  Single- versus Dual-Carrier Transmission for Installed Submarine Cable Upgrades,
  SubOptic 2013, Paris, France, April 2013
• Isaac Sackey, Thomas Richter, Christian Meuer, Robert Elschner, Mahmoud Jazayerifar, Klaus Petermann, Colja Schubert
  Characterization of polarization insensitive FOPA using a polarization-maintaining highly non-linear fiber,
  Proc. Optical Fiber Communication Conference (OFC) 2013, Los Angeles, California, USA, March 2013, OTu2D.2
• Christoph Kottke, Michael Eiselt, Jörg-Peter Elbers, Helmut Grießer, Kai Habel
  Coherent Subcarrier-WDM-PON System with SSB Modulation and Wavelength Reuse,
  Proc. Optical Fiber Communication Conference (OFC) 2013, Anaheim, California, USA, March 2013
• M.L. Nielsen, Lutz Molle, Thomas Richter, Colja Schubert
  Feasibility study of SOA-preamplified coherent reception for 112 Gb/s DP-QPSK unamplified Link,
  Proc. Optical Fiber Communication Conference (OFC) 2013, Los Angeles, California, USA, March 2013, JTh2A.45
• Thomas Richter, Robert Elschner, Carsten Schmidt-Langhorst, Tomoyuki Kato, Shigeki Watanabe, Colja Schubert
  Narrow guard-band distributed nyquist-WDM using fiber frequency conversion,
  Proc. Optical Fiber Communication Conference (OFC) 2013, Los Angeles, California, USA, March 2013, OTh1C.1
• T. Tanimura, Saleem Alreesh, Johannes Fischer, Carsten Schmidt-Langhorst, Felix Frey, Christian Meuer, Robert Elschner, Lutz Molle, Colja Schubert
  Nonlinear Transmission of 6PolSK-QPSK Signals using Coded Modulation and Digital Back Propagation,
  Proc. Optical Fiber Communication Conference (OFC) 2013, Los Angeles, California, USA, March 2013, OTu3B.3
• R. Kruglov, S. Loquai, F. Winkler, C.-A. Bunge, B. Schmauss, O. Ziemann, Kai Habel
  Eye-safe high- capacity 1-mm GI-POF interconnects exploiting Discrete Multitone Transmission,
  Proc. Optical Fiber Communication Conference (OFC 2013), Los Angeles, USA, March 2013
• Saleem Alreesh, T. Tanimura, Johannes Fischer, Carsten Schmidt-Langhorst, Felix Frey, Christian Meuer, Robert Elschner, Lutz Molle, Colja Schubert
  Four dimensional coded modulation,
  14. ITG-Workshop 5.3.1 "Optische Kommunikationssysteme - offline to realtime", Stuttgart, Germany, February 2013
• Felix Frey, Robert Elschner, Johannes Fischer, Colja Schubert
  Efficient real time implementation of DSP algorithms for coherent receivers,
  14. ITG-Workshop 5.3.1 "Optische Kommunikationssysteme - offline to realtime", Stuttgart, Germany, February 2013
• Markus Nölle, Colja Schubert, Ronald Freund
  Techniques to Realize Flexible Optical Terabit per Second Transmission Systems,
  Proc. SPIE 8646, Optical Metro Networks and Short-Haul Systems V, San Francisco, CA, USA , 2013, Invited Paper, invited

2012

• Robert Elschner, Felix Frey, Christian Meuer, Johannes Fischer, Saleem Alreesh, Carsten Schmidt-Langhorst, Lutz Molle, T. Tanimura, Colja Schubert
  Experimental Demonstration of a Format-Flexible Single Carrier Coherent Receiver using Data-Aided Digital Signal Processing,
  Proc. 38th European Conference on Optical Communication (ECOC 2012), Amsterdam, Netherlands, September 2012, We.1.A.4
• Johannes Fischer, Saleem Alreesh, Robert Elschner, Felix Frey, Christian Meuer, Lutz Molle, Carsten Schmidt-Langhorst, Colja Schubert, T. Tanimura
  Experimental Investigation of 126-Gb/s 6PolSK-QPSK Signals,
  38th European Conference on Optical Communication (ECOC 2012), Amsterdam, Netherlands, pp. B232-B237, September 2012, doi: 10.1109/ECOC.2012.6706240
• Colja Schubert, Johannes Fischer, Carsten Schmidt-Langhorst, Robert Elschner, Lutz Molle, Markus Nölle, Thomas Richter
  New trends and challenges in optical digital transmission systems,
  Proc. Photonics in Switching Conference (PS 2012), Ajaccio, Corsica Island, France, September 2012, Th-S14-I08, Invited Paper
• Colja Schubert, Johannes Fischer, Carsten Schmidt-Langhorst, Robert Elschner, Lutz Molle, Markus Nölle, Thomas Richter
  New trends and challenges in optical digital transmission systems,
  Proc. 38th European Conference on Optical Communication (ECOC 2012), Amsterdam, Netherlands, September 2012, We.1.C.1, Invited Paper
• Christoph Kottke, Kai Habel, Jonas Hilt, Klaus-Dieter Langer, Jelena Vučić
  1.25 Gbit/s Visible Light WDM Link based on DMT Modulation of a Single RGB LED Luminary,
  ECOC 2012, Amsterdam, Netherlands, September 2012
• J. Wang, Norbert Grote, Norbert Keil, Thomas Richter, Colja Schubert, Crispin Zawadzki, Ziyang Zhang, M. Kroh, A. Matiss, A. Theurer
  Optical coherent receivers on polymer hybrid-integration platform,
  Joint Symposium on Opto- and Microelectronic Devices and Circuits (SODC), Hangzhou, China, September 2012
• T. Tanimura, Markus Nölle, Johannes Fischer, Colja Schubert
  Analytical Results on Back Propagation Nonlinear Compensator in Coherent Transmission Systems,
  Proc. 38th European Conference on Optical Communication (ECOC 2012), Amsterdam, Netherlands, September 2012, p3.11
• Daniel Schmidt, Berthold Lankl, Johannes Fischer, Jonas Hilt, Colja Schubert
  Real-Time Implementation of a Parallelized Feedforward Timing Recovery Scheme for Receivers in Optical Access Networks,
  Proc. 38th European Conference on Optical Communication (ECOC 2012), Amsterdam, Netherlands, September 2012, Mo.1.A.1
• Thomas Richter, B. Corcoran, S. L. Olsson, C. Lundström, Magnus Karlsson, Colja Schubert, Peter-A. Andrekson
  Experimental characterization of a phase-sensitive four-mode fiber-optic parametric amplifier,
  Proc. 38th European Conference on Optical Communication (ECOC 2012), Amsterdam, Netherlands, September 2012, Th.1.F.1
• A. Gajda, G. Winzer, Bernd Tillack, Klaus Petermann, Lars Zimmermann, H. Tian, Robert Elschner, Thomas Richter, Colja Schubert
  High efficiency CW four-wave mixing at 1.5 µm in SOI nano-rib waveguides using p-i-n diodes,
  Proc. 9th International Conference on Group IV Photonics, San Diego, USA, August 2012, ThD7
• Johannes Fischer, Markus Nölle, Lutz Molle, Carsten Schmidt-Langhorst, Jonas Hilt, Reinhold Ludwig, Colja Schubert
  Beyond 100G - High capacity transport technologies for next generation optical core networks,
  Future Network and Mobile Summit 2012, Berlin, Germany, July 2012
• Christoph Kottke, Luz Fernández del Rosal, Liane Grobe, Kai Habel, Jonas Hilt, Klaus-Dieter Langer, Anagnostis Paraskevopoulos
  Single-channel Wireless Transmission at 806 Mbit/s using a White-light LED and a PIN-based Receiver,
  ICTON 2012, Coventry, UK , July 2012, Invited Paper, invited
• Johannes Fischer, Markus Nölle, Lutz Molle, Carsten Schmidt-Langhorst, Colja Schubert
  Is PS-QPSK really an alternative to PDM-QPSK?,
  ITG-Fachtagung "Photonische Netze", Leipzig, Germany, May 2012
• M. Kroh, Norbert Grote, Norbert Keil, A. Matiss, Thomas Richter, Colja Schubert, Andreas-G. Steffan, A. Theurer, J. Wang, Crispin Zawadzki, Ziyang Zhang
  Hybrid integrated polymer - indium phosphide dual-polarization receiver for QPSK and QAM modulation formats,
  Proc. 13. ITG Fachtagung Photonische Netze 2012, Leipzig (DE) , May 2012, P01
• Péter Farkas, Michael Schlosser
  Limits of Ethernet based X2 connections for LTE-Advanced base stations,
  ITG-Fachtagung "Photonische Netze", Leipzig, Germany, May 2012
• Robert Elschner, Thomas Richter, Tomoyuki Kato, Shigeki Watanabe, Colja Schubert
  Distributed coherent optical OFDM multiplexing using fiber frequency conversion and free-running lasers,
  Proc. Optical Fiber Communication Conference (OFC 2012), Los Angeles, CA, USA, March 2012, PDP5C.8, postdeadline
• Thomas Richter, M. Kroh, J. Wang, A. Theurer, Crispin Zawadzki, Ziyang Zhang, Norbert Keil, Andreas-G. Steffan, Colja Schubert
  Integrated polarization-diversity coherent receiver on polymer PLC for QPSK and QAM signals,
  Proc. Optical Fiber Communication Conference (OFC 2012),paper OW3G.1, Los Angeles,USA, March 2012, OW3G.1
• M. Leifgen, O. Benson, Robert Elschner, Colja Schubert
  The Implementation of a Quantum Key Distribution Scheme based on the Frequency-Time Uncertainty,
  Quantum Information and Measurement Conference (QIM), Berlin, Germany, March 2012
• Tomoyuki Kato, Robert Elschner, Thomas Richter, Ryo Okabe, Christian Meuer, Ute Troppenz, Colja Schubert, Shigeki Watanabe
  Chirp removal from directly modulated laser signals by two-stage fiber cross-phase modulation,
  Proc. Optical Fiber Communication Conference (OFC 2012), Los Angeles, CA, USA, March 2012, OTh4H.2
• Thomas Richter, Christian Meuer, Reinhold Ludwig, Colja Schubert
  Black-box phase-sensitive fiber-optic parametric amplifier assisted by a semiconductor optical amplifier,
  Proc. Optical Fiber Communication Conference (OFC 2012), Los Angeles, CA, USA, March 2012, OM3B.4
• E. Palushani, Thomas Richter, Reinhold Ludwig, Colja Schubert, Hansen Mulvad, A.T. Clausen, L.K. Oxenløwe
  OTDM-to-WDM conversion of complex modulation formats by time-domain optical fourier transformation,
  Proc. Optical Fiber Communication Conference (OFC 2012), Los Angeles, CA, USA, March 2012, OTh3H.2
• Markus Nölle, Johannes Fischer, Lutz Molle, Carsten Schmidt-Langhorst, Colja Schubert
  Influence of Channel Spacing on Ultra Long-Haul WDM Transmission of 8×112 Gb/s PS-QPSK Signals,
  Proc. Optical Fiber Communication Conference (OFC 2012), Los Angeles, CA, USA, March 2012

2011

• Johannes Fischer, Markus Nölle, Lutz Molle, Carsten Schmidt-Langhorst, Colja Schubert
  Nyquist-WDM und PS-QPSK für zukünftige Tbit/s Systeme,
  Workshop der ITG-Fachgruppe 5.3.1 "Modellierung photonischer Komponenten und Systeme", Karlsruhe, Germany, November 2011
• Robert Elschner, Thomas Richter, Colja Schubert
  Characterization of FWM-induced crosstalk for WDM operation of a fiber-optical parametric amplifier,
  Proc. 37th European Conference on Optical Communication (ECOC 2011), Geneva, Switzerland, September 2011
• Johannes Fischer, Lutz Molle, Markus Nölle, D.-D. Groß, Colja Schubert
  Experimental Investigation of 28-GBd PS-QPSK Signals,
  Proc. 37th European Conference on Optical Communication (ECOC 2011), Geneva, Switzerland, September 2011, Mo.2.B.1
• M. Kroh, J. Wang, A. Theurer, Crispin Zawadzki, Daniel Schmidt, Reinhold Ludwig, M. Lauermann, Andreas Beling, A. Matiss, Colja Schubert, Andreas-G. Steffan, Norbert Keil, Norbert Grote
  Coherent Receiver for 100G Ethernet Applications Based on Polymer Planar Lightwave Circuit,
  Proc. 37th European Conference on Optical Communication (ECOC 2011), Geneva, Switzerland, September 2011
• Tomoyuki Kato, Ryo Okabe, Reinhold Ludwig, Robert Elschner, Colja Schubert, Shigeki Watanabe
  12-Stage Sequential Optical FDM of 120 Gb/s (12x10 Gb/s) Data in 240-GHz Bandwidth using Fiber Cross-phase Modulation with Optical Subcarrier Signals,
  Proc. 37th European Conference on Optical Communication (ECOC 2011), Geneva, Switzerland, September 2011
• Danish Rafique, M. Mussolin, Jonas Mårtensson, Marco Forzati, Johannes Fischer, Lutz Molle, Markus Nölle, Colja Schubert, A.D. Ellis
  Polarization Multiplexed 224 Gb/s 16QAM Transmission Employing Digital Back-Propagation,
  Proc. 37th European Conference on Optical Communication (ECOC 2011), Geneva, Switzerland, September 2011, We.8.B.6
• Christian Meuer, G. Eisenstein, Holger Schmeckebier, Carsten Schmidt-Langhorst, Gerrit Fiol, Dejan Arsenijevic, Colja Schubert, Dieter Bimberg
  Wavelength Conversion of 40-Gb/s NRZ DPSK Signals within a 45-nm range using a 1.3µm Quantum-Dot Semiconductor Optical Amplifier,
  Proc. 37th European Conference on Optical Communication (ECOC 2011), Geneva, Switzerland, September 2011, We.10.P1.26
• E. Palushani, Carsten Schmidt-Langhorst, Thomas Richter, Markus Nölle, Reinhold Ludwig, Colja Schubert
  Transmission of a serial 5.1-Tb/s data signal using 16-QAM and coherent detection,
  Proc. 37th European Conference on Optical Communication (ECOC 2011), Geneva, Switzerland, September 2011, We.8.B.5
• Reinhold Ludwig, Thomas Richter, E. Palushani, Carsten Schmidt-Langhorst, Lutz Molle, Johannes Fischer, Markus Nölle, Robert Elschner, Colja Schubert
  Ultrafast transmission systems using coherent technology,
  Proc. 18th Optoelectronics and Communications Conference (OECC 2011), Kaohsiung, Taiwan, July 2011, 8D1 1 , Invited Paper
• Dieter Bimberg, Holger Schmeckebier, Christian Meuer, Carsten Schmidt-Langhorst, René Bonk, Dejan Arsenijevic, Gerrit Fiol, Andrey Galperin, Jürg Leuthold, J. Li, Colja Schubert
  Quantum-Dot Semiconductor Optical Amplifier for Filter-Assisted 80-Gb/s Wavelength Conversion,
  Proc. 13th International Conference on Transparent Optical Networks (ICTON 2011), Stockhom, Sweden, June 2011, Invited Paper
• Klaus-Dieter Langer, Jelena Vučić, Christoph Kottke, L. Fernández, Kai Habel, Anagnostis Paraskevopoulos
  Exploring the Potentials of Optical-Wireless Communication using White LEDs,
  Proc. 13th International Conference on Transparent Optical Networks (ICTON 2011), Stockholm, Sweden, June 2011, Invited Paper
• Robert Elschner, Thomas Richter, Colja Schubert
  Parametrische Verstärker als Option für die optische Breitbandverstärkung,
  12. ITG Fachtagung Photonische Netze 2011, Leipzig (Germany), pp. 141-148, May 2011
• Johannes Fischer, Reinhold Ludwig, Lutz Molle, Carsten Schmidt-Langhorst, C.C. Leonhardt, A. Matiss, Colja Schubert
  Coherent Detection Using Parallel Optical Sampling,
  12. ITG Fachtagung Photonische Netze 2011, Leipzig, Germany, pp. 32-36, May 2011
• Johannes Fischer, Reinhold Ludwig, Lutz Molle, Markus Nölle, Andreas Beling, C.C. Leonhardt, A. Matiss, A. Umbach, R. Kunke, Heinz-Gunter Bach, Colja Schubert
  Integrated Coherent Receiver Modules for 100G Ethernet and Beyond,
  ITG Symposium Proceedings of Photonic Networks , Leipzig, Germany, May 2011
• Robert Elschner, Thomas Richter, Colja Schubert
  Parametric amplification as an option for optical broadband amplification,
  12. ITG Fachtagung Photonische Netze, Leipzig, Germany, pp. 141-148, May 2011
• Robert Elschner, Thomas Richter, Markus Nölle, Jonas Hilt, Colja Schubert
  Parametric amplification of 28-GBd NRZ-16QAM signals,
  Proc. Optical Fiber Communication Conference (OFC 2011), Los Angeles,USA, March 2011, OThC2
• A. Matiss, Markus Nölle, Johannes Fischer, C.C. Leonhardt, Reinhold Ludwig, Jonas Hilt, Lutz Molle, Carsten Schmidt-Langhorst, Colja Schubert
  Characterization of an Integrated Coherent Receiver for 224 Gb/s Polarization Multiplexed 16-QAM Transmission,
  Proc. Optical Fiber Communication Conference (OFC 2011), Los Angeles,USA, March 2011, JWA026
• Andreas Beling, N. Ebel, A. Matiss, G. Unterbörsch, Markus Nölle, Johannes Fischer, Jonas Hilt, Lutz Molle, Colja Schubert, F. Verluise, L. Fulop
  Fully-Integrated Polarization-Diversity Coherent Receiver Module for 100G DP-QPSK,
  Proc. Optical Fiber Communication Conference (OFC 2011), Los Angeles,USA, March 2011, OML5
• Thomas Richter, Robert Elschner, A. Gandhe, Colja Schubert
  Parametric amplification of 112 Gbit/s polarization multiplexed DQPSK signals in a fiber loop configuration,
  Proc. Optical Fiber Communication Conference (OFC 2011), Los Angeles,USA, March 2011, OThC4
• Tomoyuki Kato, Ryo Okabe, Reinhold Ludwig, Carsten Schmidt-Langhorst, Colja Schubert, Shigeki Watanabe
  All-Optical THz-band Frequency Multiplexing on A Single Optical Carrier Using Fiber Cross-Phase Modulation,
  Proc. Optical Fiber Communication Conference (OFC 2011), Los Angeles,USA, March 2011, OThC5
• J. Li, Carsten Schmidt-Langhorst, R. Schmogrow, David Hillerkuss, M. Lauermann, M. Winter, K. Worms, Colja Schubert, C. Koos, W. Freude, Jürg Leuthold
  Self-Coherent Receiver for PolMUX Coherent Signals,
  Proc. Optical Fiber Communication Conference (OFC 2011), Los Angeles,USA, March 2011, OMV5
• Thomas Richter, E. Palushani, Carsten Schmidt-Langhorst, Markus Nölle, Reinhold Ludwig, Johannes Fischer, Colja Schubert
  Single wavelength channel 10.2 Tb/s TDM-data capacity using 16-QAM and coherent detection,
  Proc. Optical Fiber Communication Conference (OFC 2011), Los Angeles, CA, USA, March 2011, PDP-A9, postdeadline
• Jelena Vučić, Kai Habel, Christoph Kottke, Klaus-Dieter Langer
  803 Mbit/s visible light WDM link based on DMT modulation of a single RGB LED luminary,
  Proc. Optical Fiber Communication Conference (OFC 2011), Los Angeles, CA, USA, March 2011
• Ronald Freund, Markus Nölle, Matthias Seimetz, Jonas Hilt, Johannes Fischer, Reinhold Ludwig, Colja Schubert, Heinz-Gunter Bach, Karl-Otto Velthaus, Martin Schell
  Higher-order modulation formats for spectral-efficient high-speed metro systems ,
  Photonics West Conference, San Franciso, CA, USA, January 2011

2010

• R. E. Makon, R. Driad, Colja Schubert, Johannes Fischer, R. Lösch, H. Walcher, J. Rosenzweig, M. Schlechtweg, O. Ambacher
  107-112 Gbit/s Fully Integrated CDR/1:2 DEMUX Using InP-Based DHBTs,
  European Microwave Week, Paris,France, October 2010, EuMIC14-1, September 26 - October 1st,2010,Paris,France,paper EuMIC14-1
• Johannes Fischer, Reinhold Ludwig, Lutz Molle, Carsten Schmidt-Langhorst, C.C. Leonhardt, A. Matiss, Colja Schubert
  Digital Coherent Receiver Based on Parallel Optical Sampling,
  Proc. 36th European Conference on Optical Communication (ECOC 2010), Turin (Italy), September 2010, Th.10.A.4, September 19-23,2010,Turin (Italy),paper Th.10.A.4
• Colja Schubert, J. Li, Heinz-Gunter Bach, G.G. Mekonnen, R. E. Makon, R.H. Derksen, V. Hurm, A. Djupsjöbacka, M. Chacinski, U. Westergren, Andreas-G. Steffan, R. Driad
  Characterization of a pin-TWA Photoreceiver in OOK-System Experiments up to 112 Gb/s,
  Proc. 36th European Conference on Optical Communication (ECOC 2010), Turin (Italy), September 2010, Tu.3.A.2, September 19-23,2010,Turin (Italy),paper Tu.3.A.2
• Robert Elschner, Thomas Richter, Lutz Molle, Klaus Petermann, Colja Schubert
  Single-pump FWM-wavelength conversion in HNLF using coherent receiver-based electronic compensation,
  Proc. 36th European Conference on Optical Communication (ECOC 2010), Turin (Italy), September 2010, P3.17, September 19-23,2010,Turin (Italy) P3.17
• Carsten Schmidt-Langhorst, Christian Meuer, Andrey Galperin, Holger Schmeckebier, Reinhold Ludwig, D. Puris, Dieter Bimberg, Klaus Petermann, Colja Schubert
  80 Gb/s Multi-Wavelength Booster Amplification in an InGaAs/GaAs Quantum-Dot Semiconductor Optical Amplifier,
  Proc. 36th European Conference on Optical Communication (ECOC 2010), Turin (Italy), September 2010, Mo.1.F.6, September 19-23,2010,Turin (Italy),paper Mo.1.F.6
• J. Li, Colja Schubert, R.H. Derksen, R. E. Makon, V. Hurm, A. Djupsjöbacka, M. Chacinski, U. Westergren, Heinz-Gunter Bach, G.G. Mekonnen, Andreas-G. Steffan, R. Driad, H. Walcher, J. Rosenzweig
  112 Gb/s Field Trial of Complete ETDM System Based on Monolithically Integrated Transmitter & Receiver Modules for Use in 100GbE,
  Proc. 36th European Conference on Optical Communication (ECOC 2010), Turin (Italy), September 2010, P4.03, September 19-23,2010,Turin (Italy),poster P4.03
• G.G. Mekonnen, Heinz-Gunter Bach, Reinhard Kunkel, Colja Schubert, Detlef Pech, Agnieszka Konczykowska, Filipe Jorge, Andre Scavennec, Muriel Riet
  Co-Packaged 107 Gb/s Photoreceiver for Direct Detection Comprising InP-based pinTWA and DEMUX,
  Proc. 36th European Conference on Optical Communication (ECOC 2010), Turin (Italy), September 2010, Th.10.D.1, September 19-23,2010,Turin (Italy),paper Th.10.D.1
• R.H. Derksen, K. Wang, J. Li, A. Djupsjöbacka, G. Jacobsen, M. Chacinski, U. Westergren, S. Popov, V. Hurm, R. E. Makon, R. Driad, H. Walcher, J. Rosenzweig, Andreas-G. Steffan, G.G. Mekonnen, Heinz-Gunter Bach, Colja Schubert
  Setting the stage for 100GbE serial standard - the HECTO project,
  The World Telecommunications Congress 2010,SO7, Vienna, Austria, September 2010, September 13-14,2010,
• Holger Schmeckebier, Christian Meuer, Carsten Schmidt-Langhorst, Andrey Galperin, Colja Schubert, Dieter Bimberg
  Quantum Dot Semiconductor Optical Amplifier for All Optical Communication Networks at 1.3 um,
  European Semiconductor Laser Workshop (ESLW), Pavia,Italy, September 2010, September 24-25,2010,Pavia (Italy)
• Markus Nölle, Ronald Freund, Jonas Hilt, Lutz Molle, Matthias Seimetz
  8×224 Gbit/s PDM 16QAM WDM Transmission with Real-Time Signal Processing at the Transmitter,
  ECOC 2010, Turin (I) , September 2010
• Reinhold Ludwig, Heinz-Gunter Bach, Johannes Fischer, Reinhard Kunkel, C.C. Leonhardt, A. Matiss, Lutz Molle, Colja Schubert, A. Umbach
  Performance of a Novel Integrated Coherent Receiver Module for 100G Ethernet Applications and Beyond,
  Proc. 36th European Conference on Optical Communication (ECOC 2010), Turin (Italy), September 2010, Mo.2.F.1, Invited Paper, invited,September 19-23,2010,paper Mo.2.F.1
• Holger Schmeckebier, Dieter Bimberg, Andrey Galperin, Christian Meuer, Carsten Schmidt-Langhorst, Colja Schubert
  Quantum Dot Semiconductor Optical Amplifiers at 1.3 µm for Applications in All-Optical Communication Networks,
  Semicond. Sci. Technol. 26 (2011), Pavia (I) , September 2010
• Thomas Richter, Johannes Fischer, Tomoyuki Kato, Reinhold Ludwig, Ryo Okabe, Colja Schubert, Shigeki Watanabe
  All-Optical Level Equalization of Data Packets Using a Fiber-Optic Parametric Amplifier,
  Proc. 36th European Conference on Optical Communication (ECOC), Turin (Italy), September 2010, We.8.A.7, September 19-23
• Klaus-Dieter Langer, Jelena Vučić
  Optical Wireless Indoor Networks: Recent Implementation Efforts,
  Proc. ECOC 2010, Turin (I), September 2010, We.6.B.1, Invited Paper, invited
• Jelena Vučić, L. Fernández, Kai Habel, Christoph Kottke, Klaus-Dieter Langer
  Implementation of a real-time DMT-based 100 Mbit/s visible-light link,
  Proc. ECOC 2010, Turin (I), September 2010, We.7.B.1, Invited Paper, invited
• Holger Schmeckebier, Christian Meuer, Dieter Bimberg, Carsten Schmidt-Langhorst, Andrey Galperin, Colja Schubert
  Quantum Dot Semiconductor Optical Amplifier for All-Optical Communication Networks at 1.3 um,
  International Nano-Optoelectronic Workshop (iNOW), Beijing and Changchun,China, August 2010, August 01-15,2010,Beijing and Changchun (China)
• Jonas Hilt, Ronald Freund, Lutz Molle, Markus Nölle, Matthias Seimetz
  32 Gbaud Real-Time FPGA-Based Multi-Format Transmitter for Generation of Higher-Order Modulation Formats,
  9th Conference on Optcial Internet,The Shilla Jeju, Jeju-do, Südkorea, July 2010, TuC1-4
• Thomas Richter, Robert Elschner, Lutz Molle, Klaus Petermann, Colja Schubert
  Coherent receiver-based compensation of phase distortions induced by single-pump HNLF-based FWM wavelength converters,
  Photonics in Switching, Monterey,California,(USA), July 2010, PWB2, July 25-28,Monterey,California,(USA),paper PWB2
• Jelena Vučić, Luz Fernández del Rosal, Kai Habel, Christoph Kottke, Anagnostis Paraskevopoulos
  Visible light communications based on modulation of white LEDs,
  Proc. Symposium on the Science and Technology of Light Sources and WhiteLED conference (LS12-WhiteLED3) 2010, Eindhoven (NL) , pp. 351-352, July 2010
• Mike Wolf, Liane Grobe, Andreas Koher, Marie Ruth Rieche, Jelena Vučić
  Block Transmission with Linear Frequency Domain Equalization for Dispersive Optical Channels with Direct Detection,
  Proc. ICTON 2010, Munich, Germany, July 2010, Th.A3.4, paper Th.A3.4
• Jelena Vučić, L. Fernández, Kai Habel, Christoph Kottke, Klaus-Dieter Langer, S. Nerreter, J.W. Walewski
  Video broadcast via a lamp,
  Proc. ICTON 2010, Munich, Germany, July 2010, Th.A3.2 , Invited Paper, invited
• Klaus-Dieter Langer, Luz Fernández del Rosal, Kai Habel, Christoph Kottke, S. Nerreter, Jelena Vučić, J.W. Walewski
  Implementation of a 84 Mbit/s visible-light link based on discrete-multitone modulation and LED room lighting,
  Proc. CSNDSP 2010, Newcastle, UK , July 2010, Invited Paper, invited
• Johannes Fischer, Reinhold Ludwig, Lutz Molle, Carsten Schmidt-Langhorst, C.C. Leonhardt, A. Matiss, Colja Schubert
  Digital Coherent Receiver with Optical Sampling,
  Workshop der ITG-Fachgruppe 5.3.1 "Modellierung photonischer Komponenten und Systeme", Munich, Germany, June 2010, 10.-11. Juni 2010,
• Ronald Freund, Jonas Hilt, Markus Nölle, Lutz Molle, Matthias Seimetz, Johannes Fischer, Reinhold Ludwig, Carsten Schmidt-Langhorst, Colja Schubert
  High Spectral Efficient Phase and Quadrature Amplitude Modulation for Optical Fibre Transmission ,
  Signal Processing in Photonic Communications (SPPCom), Karlsruhe,Germany, June 2010, SPTuA2, Invited Paper, invited,21-24 Juni,Karlsruhe,Germany,paper SPTuA2
• Jonas Hilt, Markus Nölle, Lutz Molle, Matthias Seimetz, Ronald Freund
  32 Gbaud Real-Time FPGA-Based Multi-Format Transmitter for Generation of Higher-Order Modulation Formats,
  Workshop der ITG-Fachgruppe 5.3.1 "Modellierung photonischer Komponenten und Systeme", Munich, Germany, June 2010, 10.-11. Juni 2010
• Ronald Freund, G. Bosco, A. Carena, Hans Christian, A.D. Ellis, P. Frascella, W. Freude, Michael Galili, F.C.G. Gunning, David Hillerkuss, S.K. Ibrahim, Jürg Leuthold, Reinhold Ludwig, N. Mac Suibhne, Hansen Mulvad, Markus Nölle, L.K. Oxenløwe, P. Poggiolini, Carsten Schmidt-Langhorst, R. Schmogrow, Colja Schubert, M. Winter, J. Zhao
  Single- and Multi-Carrier Techniques to build up Tb/s per channel Transmission Systems,
  ICTON 2010, München (DE) , June 2010, Invited Paper, invited
• Agnieszka Konczykowska, Filipe Jorge, J.-Y. Dupuy, Muriel Riet, J. Godin, Andre Scavennec, Heinz-Gunter Bach, G.G. Mekonnen, Detlef Pech, Colja Schubert
  InP HBT demultiplexing ICs for over 100 Gb/s optical transmission,
  4th Microwave and Radar Week MRW-2010, Vilnius,Lithuania, June 2010, 14-18 June 2010
• J.A. Lazaro, Josep Prat, C. Kazmierski, P. Chanclou, Ioannis Tomkos, E. Tangdiongga, I.T. Monroy, X.-Z. Qiu, A. Teixeira, R. Soila, P. Poggiolini, R. Sambaraju, Klaus-Dieter Langer, D. Erasme, E. Kehayas, H. Avramopoulos
  Subsystems for Future Access Networks,
  Future Network and Mobile Summit 2010, Florence, Italy, June 2010, 4c
• Carsten Schmidt-Langhorst, Reinhold Ludwig, Lutz Molle, D.-D. Groß, Ronald Freund, Colja Schubert
  Terabit/s Single-Carrier Transmission Based on Coherent Time-Division Demultiplexing,
  Proc 11. ITG-Fachtagung Photonische Netze, Leipzig (DE), May 2010, May 3-4,2010,Leipzig (DE)
• Colja Schubert, R. E. Makon, Andreas-G. Steffan, R. Driad, Heinz-Gunter Bach, G.G. Mekonnen, R. Zhang, Reinhold Ludwig, Carsten Schmidt-Langhorst
  InP-basierte elektrische und elektro-optische Komponenten für 112 Gbit/s OOK Systeme,
  Proc 11. ITG-Fachtagung Photonische Netze, Leipzig (DE), May 2010, 26, May 3-4,2010,Leipzig (DE),paper 26
• Matthias Seimetz, Ronald Freund, Lutz Molle, Markus Nölle, Jonas Hilt, Dirk-Daniel Gross
  Spectrally Efficient Fiber Transmission Using Higher-Order Modulation Formats,
  FORCE Inaugural Workshop,Chalmers University of Technology, Gothenburg,Sweden, May 2010
• Markus Nölle
  Steigerung der Datenrate in optischen Systemen mit hoher spektraler Effizienz,
  ITG Fachtagung Photonische Netze 2010, Leipzig,Germany, May 2010
• Carsten Schmidt-Langhorst, Reinhold Ludwig, Lutz Molle, D.-D. Groß, Ronald Freund, Colja Schubert
  Terabit/s on a Single Wavelength Channel: Generation,Transmission and Coherent Detection,
  Proc. Optical Fiber Communication Conference (OFC 2010), San Diego,California (USA), March 2010, OThV3, Invited Paper, invited,21-25 March 2010,San Diego,California (USA),invited paper OThV3
• Johannes Fischer, Reinhold Ludwig, Lutz Molle, Carsten Schmidt-Langhorst, Andrey Galperin, Thomas Richter, C.C. Leonhardt, A. Matiss, Colja Schubert
  High-speed digital coherent receiver with parallel optical sampling,
  Proc. Optical Fiber Communication Conference (OFC 2010), San Diego,California (USA), March 2010, PDPB4, postdeadline,21-25 March 2010,San Diego,California (USA),post-deadline paper PDPB4
• A. Matiss, Reinhold Ludwig, Johannes Fischer, Lutz Molle, Colja Schubert, C.C. Leonhardt, Heinz-Gunter Bach, Reinhard Kunkel, A. Umbach
  Novel Integrated Coherent Receiver Module for 100G Serial Transmission,
  Proc. Optical Fiber Communication Conference (OFC 2010), San Diego,California (USA), March 2010, PDPB3, postdeadline,21-25 March 2010,San Diego,California (USA),post-deadline paper PDPB3
• Markus Nölle, Ronald Freund, Dirk-Daniel Gross, Lutz Molle
  Transmission of 5x62 Gbit/s DWDM Coherent OFDM with a Spectral Efficiency of 7.2 Bit/s/Hz using Joint 64-QAM and 16-QAM Modulation,
  OFC 2010, San Diego, CA (US) , March 2010
• Jelena Vučić, A. Büttner, Kai Habel, Christoph Kottke, Klaus-Dieter Langer, S. Nerreter, J.W. Walewski
  230 Mbit/s via a wireless visible-light link based on OOK modulation of phosphorescent white LEDs,
  Proc. OFC 2010,paper OThH3, San Diego, CA (US) , March 2010
• Wenda Ni, E. Patzak, Michael Schlosser, Yabin Ye, Hanyi Zhang
  On operating shared-path-protected WDM networks non-revertively by using backup path reprovisioning ,
  Optical Fiber Communication (OFC 2010),collocated National Fiber Optic Engineers Conference, San Diego, CA (US) , March 2010
• Wenda Ni, E. Patzak, Michael Schlosser, Yabin Ye, Hanyi Zhang
  Survivable mapping with maximal physical-layer failure-localization potential in IP over transparent optical networks,
  Optical Fiber Communication (OFC 2010),collocated National Fiber Optic Engineers Conference, San Diego, CA (US) , ISBN: 978-1-55752-884-1 , March 2010

2009

• Ronald Freund, Matthias Seimetz, Lutz Molle, Tigran Baghdasaryan, Marco Forzati, Jonas Mårtensson
  Next generation optical networks based on higher-order modulation formats,coherent receivers and electronic distortion equalization,
  Proc. 3rd International Conference on Transparent Optical Networks (ICTON 2009), Angers,France, December 2009, Invited Paper, invited,10-12 December 2009,Angers,France
• Jonas Hilt, Matthias Seimetz, Lutz Molle, Ronald Freund
  High-Speed FPGA Implementation of Feed-Forward Phase Estimation Algorithms,
  Workshop der ITG Fachgruppe 5.3.1,Modellierung photonischer Komponenten und Systeme, Berlin,Germany, November 2009, 12-13 November 2009
• Hanyi Zhang, Carsten Schmidt-Langhorst, W. Zhao, Colja Schubert
  Mitigation of Sampling Clock Drift in Asynchronously Under-Sampled Optical Bit Pattern Monitoring,
  Asia Communications and Photonics Conference and Exhibition (ACP 2009), Shanghai,China, November 2009, TuE6, Asia Communications and Photonics Conference and Exhibition (ACP),Nov. 2-6,2009,Shanghai (China),paper TuE6; Proc. SPIE 7632,763205 (2009)
• W. Sohler, D. Büchter, L. Gui, H. Herrmann, H. Hu, Reinhold Ludwig, R. Nouroozi, V. Quiring, R. Ricken, Colja Schubert, H. Suche
  Wavelength Conversion and Optical Signal Processing in PPLN Waveguides,
  Asia Communications and Photonics Conference and Exhibition (ACP), Shanghai,China, November 2009, ThN1, Invited Paper, invited, Nov. 2-6,2009
• Markus Nölle, Dirk-Daniel Gross, Lutz Molle, Ronald Freund
  WDM Performance of Spectral Efficient Coherent OFDM,
  Workshop der ITG Fachgruppe 5.3.1,Modellierung photonischer Komponenten und Systeme, Berlin,Germany, November 2009, 12-13 November 2009
• A. Hachmeister, Ronald Freund, Michael Rohde
  Long Haul WDM Transmission of Optical Minimum Shift Keying Format with Narrow Channel Spacing,
  Proc. Asia Communications and Photonics Conference and Exhibition (ACCP 2009), Shanghai,China, November 2009, ,2-6 November 2009,Shanghai,China
• Carsten Schmidt-Langhorst, Christian Meuer, Reinhold Ludwig, D. Puris, René Bonk, T. Vallaitis, Dieter Bimberg, Klaus Petermann, Jürg Leuthold, Colja Schubert
  Quantum-Dot Semiconductor Optical Booster Amplifier with Ultrafast Gain Recovery for Pattern-Effect Free Amplification of 80 Gb/s RZ-OOK Data Signals,
  Proc. 35th European Conference on Optical Communication (ECOC 2009), Vienna (AT), September 2009, We6.2.1, September 20-24,2009,Vienna (AT),paper We6.2.1
• Robert Elschner, Thomas Richter, Klaus Petermann
  Impact of pump-phase modulation on fibre-based parametric wavelength conversion of coherently detected PSK signals,
  International Conference on Photonics in Switching (PiS), Pisa,Italy, September 2009, FrI1-5, September 15-19,2009,Pisa (Italy),paper FrI1-5
• Lutz Molle, Matthias Seimetz, Dirk-Daniel Gross, Ronald Freund, Michael Rohde
  Polarization Multiplexed 20 Gbaud Square 16QAM Long-Haul Transmission over 1120 km using EDFA Amplification,
  in Proc. 35th European Conference on Optical Communication (ECOC 2009), Vienna(AT), September 2009, number 8.4.4,September 20-24,2009,Vienna (AT)
• Heinz-Gunter Bach, Reinhard Kunkel, G.G. Mekonnen, R. Zhang, Ariane Sigmund, Daniel Schmidt, C. Sakkas, Detlef Pech, Colja Schubert
  Novel 107 Gb/s Bias-Feeding Photodetector OEIC for Efficient Low-Cost Photoreceiver Co-Packaging,
  Proc. 35th European Conference on Optical Communication (ECOC 2009), Vienna (AT), September 2009, PD1.8, postdeadline,September 20-24,2009,Vienna (AT),postdeadline paper PD1.8
• Anagnostis Paraskevopoulos, Jelena Vučić, Sven-Hendrik Voß, Klaus-Dieter Langer
  Optical free-space communication systems in the Mbps to Gbps range,suitable for industrial applications,
  Proceedings,ISOT 2009 (International Symposium on Optomechatronic Technologies , Istanbul,Turkey, September 2009, 21-23 September 2009,Istanbul,TURKEY)
• Thomas Richter, Robert Elschner, Colja Schubert, Klaus Petermann
  Fibre-based parametric wavelength conversion of 86 Gb/s RZ-DQPSK signals with 15 dB gain using a dual-pump configuration,
  Proc. 35th European Conference on Optical Communication (ECOC 2009), Vienna (AT), September 2009, 3.3.2, September 20-24,2009,Vienna (AT),paper 3.3.2
• F. Futami, Ryo Okabe, Tomoyuki Kato, Carsten Schmidt-Langhorst, Colja Schubert, Reinhold Ludwig, Shigeki Watanabe
  All-optical Combination of DPSK and OOK to 320-Gb/s DQPSK Signal Using Fiber-based Signal Processors,
  Proc. 35th European Conference on Optical Communication (ECOC 2009), Vienna (AT), September 2009, Tu4.3.1, September 20-24,2009,Vienna (AT),Tu4.3.1
• G. Gavioli, E. Torrengo, G. Bosco, A. Carena, V. Curri, V. Miot, P. Poggiolini, M. Belmonte, A. Guglierame, A. Brinciotti, A. La Porta, F. Forghieri, C. Muzio, G. Osnago, S. Piciaccia, C. Lezzi, Lutz Molle, Ronald Freund
  100Gb/s WDM NRZ-PM-QPSK Long-Haul Transmission Experiment over Installed Fiber Probing Non-Linear Reach With and Without DCUs,
  Proc. 35th European Conference on Optical Communication (ECOC 2009), Vienna (AT), September 2009, September 20-24,2009,Vienna (AT)
• G.G. Mekonnen, Heinz-Gunter Bach, Filipe Jorge, Agnieszka Konczykowska, Reinhard Kunkel, Detlef Pech, Muriel Riet, Thomas Rosin, Andre Scavennec, Colja Schubert
  Hybrid Co-Packaged Receiver Module with pin-Photodiode Chip and DEMUX-IC for 107 Gb/s Data Rates,
  Proc. 35th European Conference on Optical Communication (ECOC 2009), Vienna (AT), September 2009, Th9.2.6, September 20-24,2009,Vienna (AT),Th9.2.6
• Reinhold Ludwig, Heinz-Gunter Bach, Reinhard Kunkel, C.C. Leonhardt, A. Matiss, Lutz Molle, Daniel Schmidt
  Coherent Detection of a 50 Gb/s QPSK Signal Using an InP 90° HybridMonolithically Integrated with Balanced Photodetectors,
  Proc. 35th European Conference on Optical Communication (ECOC 2009), Vienna (AT), September 2009, P3.20, September 20-24,2009,Vienna (AT),paper P3.20
• M.L. Nielsen, A. Boutin, L. Fulop, Reinhold Ludwig, Andreas-G. Steffan, G. Tsianos, A. Umbach, G. Unterbörsch, F. Verluise
  Investigation of DGD and Delay-Line Interferometer Phase Tolerance of Integrated Receiver Module for 86 Gb/s NRZ-DQPSK modulation,
  Proc. 35th European Conference on Optical Communication (ECOC 2009), Vienna (AT), September 2009, Th9.2.7, September 20-24,2009,Vienna (AT),Th9.2.7
• Sven-Hendrik Voß, Michael Schüler, Anagnostis Paraskevopoulos
  Using FPGA Technology and Optical Links to solve the I/O bottleneck challenges in modern communication systems,
  ORT 2009 Optics in Computing Workshop,ECOC 2009, Vienna(AT), September 2009, September 20-24,2009,Vienna)
• Jelena Vučić, A. Büttner, Kai Habel, Christoph Kottke, Klaus-Dieter Langer, S. Nerreter, J.W. Walewski
  125 Mbit/s over 5 m wireless distance by use of OOK-modulated phosphorescent white LEDs,
  Proc. ECOC 2009, Vienna (AT), September 2009, 9.6.4.
• Carsten Schmidt-Langhorst
  Future Trends in Fiber-Optic Communication Networks,
  International Nano-Optoelectronic Workshop (iNOW), Stockholm, August 2009, Invited Paper, 04.08.2009,Stockholm,invited speaker
• Malte Schellmann, Lars Thiele, Thomas Wirth, Volker Jungnickel, Thomas Haustein
  Spatial mode switching in multi-user MIMO-OFDM systems: Performance in a real-world scenario,
  13th International OFDM-Workshop (InOWo 2008), Hamburg, Germany, August 2009
• Reinhold Ludwig
  Ultrafast transmission systems using coherent technology,
  Proc. 4th International Symposium on Ultrafast Photonic Technologies (ISUPT), RIEC Tohoku University, Sendai, Japan, August 2009, Invited Paper
• Ronald Freund, H. Louchet, Marko Gruner, Lutz Molle, Matthias Seimetz, A. Richter
  80 Gbit/s/Channel Polarization Multiplexed Star-16QAM WDM Transmission over 720 km SSMF with Electronic Distortion Equalization,
  Proc. 14th Opto Electronics and Communications Conference (OECC 2009), Hongkong,China, July 2009
• Ronald Freund, D.-D. Groß, Reinhold Ludwig, Carsten Schmidt-Langhorst
  1.28 Tb/s Single Wavelength Star-16-QAM Transmission over up to 800 m of Graded-Index Multimode Fibre,
  Proc. 14th OptoElectronics and Communications Conference (OECC 2009), Hong Kong (China), July 2009, ThPD7, postdeadline,13-17 July 2009,Hong Kong (China),postdeadline paper ThPD7
• Josep-M. Fàbrega, Josep Prat, Lutz Molle, Ronald Freund
  Design of a wavelength control for coherent detection of high order modulation formats,
  submitted to Proc. International Conference on Transparent Optical Networks - ICTON 2009, Island of São Miguel,Azores,Portugal, June 2009, WEP21, June 28 - July 2,2009 - Island of São Miguel,Azores,Portugal,paper WEP21
• Klaus-Dieter Langer, Luz Fernández del Rosal, Christoph Kottke, S. Nerreter, Jelena Vučić, J.W. Walewski
  Advances and prospects in high-speed information broadcast,
  Proc. ICTON 2009, Sao Miguel, Portugal, June 2009, Mo.B5.3, Invited Paper, invited,Paper Mo.B5.3,2009
• Carsten Schmidt-Langhorst, Reinhold Ludwig, H. Hu, Colja Schubert
  1 Tb/s Transmission on a Single Wavelength Channel,
  Proc 10. ITG-Fachtagung Photonische Netze , Leipzig,Germany, May 2009, May 4-5,2009,Leipzig (DE)
• Wenda Ni, Michael Schlosser, Hanyi Zhang
  Backup Path Reprovisioning and Activation Planning with Differentiated Dual-Failure Restorability in WDM Mesh Networks,
  10. ITG-Fachtagung Photonische Netze,2009, Leipzig (DE) , May 2009
• Carsten Schmidt-Langhorst, Reinhold Ludwig, H. Hu, Colja Schubert
  Single-Channel 1-Tb/s Transmission over 480 km DMF for Future Terabit Ethernet Systems,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, OTuN5, 22-26 March 2009,San Diego,California (USA),paper OTuN5
• Ronald Freund
  High-speed transmission in multimode fibres,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, 22-26 March 2009,San Diego,California (USA),Tutorial
• Heinz-Gunter Bach, Giorgis Gebre Mekonnen, Reinhard Kunkel, Colja Schubert, Detlef Pech, Thomas Rosin, Agnieszka Konczykowska, Filipe Jorge, Andre Scavennec, Muriel Riet
  107 Gbit/s Demultiplexing Photoreceivers Comprising pin and pinTWA Frontends,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, OMK2, 22-26 March 2009,San Diego,California (USA),paper OMK2
• Carsten Schmidt-Langhorst, Reinhold Ludwig, D.-D. Groß, Lutz Molle, Matthias Seimetz, Ronald Freund, Colja Schubert
  Generation and Coherent Time-Division Demultiplexing of up to 5.1 Tb/s Single-Channel 8-PSK and 16-QAM Signals,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, PDPC6, postdeadline,22-26 March 2009,San Diego,California (USA),post-deadine paper PDPC6
• Colja Schubert, R.E. Makon, Andreas-G. Steffan, R. Driad, Reinhold Ludwig, Carsten Schmidt-Langhorst
  Characterization of an InP-based Electrical 1:2 Demultiplexer in a 107 Gb/s OOK System,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, OThE3, 22-26 March 2009,San Diego,California (USA),paper OThE3
• H. Hu, H. Suche, Reinhold Ludwig, B. Huettl, Carsten Schmidt-Langhorst, R. Nouroozi, W. Sohler, Colja Schubert
  Polarization insensitive all-optical wavelength conversion of 320 Gb/s RZ-DQPSK signals,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, OThS6, 22-26 March 2009,San Diego,California (USA),paper OThS6
• M. Kroh, G. Unterbörsch, G. Tsianos, R. Ziegler, Andreas-G. Steffan, Heinz-Gunter Bach, J. Kreissl, Reinhard Kunkel, G.G. Mekonnen, Wolfgang Rehbein, Daniel Schmidt, Reinhold Ludwig, Klaus Petermann, J. Bruns, T. Mitze, K. Voigt, Lars Zimmermann
  Hybrid Integrated 40 Gb/s DPSK Receiver on SOI,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, OMK3, 22-26 March 2009,San Diego,California (USA),paper OMK3
• Matthias Seimetz
  System Degradation by the SPM-Induced Mean Nonlinear Phase Shift in Optical QAM Transmission,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, JWA38, 22-26 March 2009,San Diego,California (USA),paper JWA38
• Matthias Seimetz, Lutz Molle, Marko Gruner, D.-D. Groß, Ronald Freund
  Transmission Reach Attainable for Single-Polarization and PolMux Coherent Star 16QAM Systems in Comparison to 8PSK and QPSK at 10Gbaud,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, OTuN2, 22-26 March 2009,San Diego,California (USA),paper OTuN2
• Matthias Seimetz, Markus Nölle, Carl-M. Weinert, Ronald Freund, Bernhard Spinnler, S. Spälter, C. R. S. Fludger
  Influence of Neighbor Channel Modulation Formats on 112 Gbit/s and 42.8 Gbit/s WDM Coherent Polmux-QPSK Transmission Systems,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, JThA44, 22-26 March 2009,San Diego,California (USA),paper JThA44
• Markus Nölle, Ronald Freund
  Comparison of 30 Gbit/s Coherent 8PSK Single Carrier and OFDM Multi Carrier Systems with Respect to Transmission Reach,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, JTHA43, 22-26 March 2009,San Diego,California (USA),paper JTHA43
• Wenda Ni, Chunlei Zhu, Yabin Ye, Michael Schlosser, Hanyi Zhang
  Reducing Burst Loss Probability in Multi-Class Optical Burst Switching Networks by Successive Minimal Incremental Routing,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2009, 22-26 March 2009,San Diego,California (USA)
• Anagnostis Paraskevopoulos
  Scalable (24 – 140 Gbps) optical data link,well adapted for future maskless lithography applications,
  Proceedings,SPIE Advanced Lithography Conference 2009, San Jose,USA, February 2009, 26-27 February 2009,San Jose,USA
• Lars Thiele, Thomas Wirth, Kai Börner, Michael Olbrich, Volker Jungnickel
  Modeling of 3D Field Patterns of Downtilted Antennas and Their Impact on Cellular Systems,
  International ITG Workshop on Smart Antennas (WSA), Berlin, Germany, February 2009
• Anagnostis Paraskevopoulos
  High speed (>100 Gbps) key components for a scalable optical data link,to be implemented in future maskless lithography applications,
  Proceedings,EMLC 2009 (The 25th European Mask and Lithography Conference EMLC 2009, Dresden,Germany, January 2009, January 12 - 15,2009,Hilton Hotel,Dresden,Germany,

2008

• L. Han, H. Hu, Reinhold Ludwig, Colja Schubert, Hanyi Zhang
  All-Optical Wavelength Conversion of 80 Gb/s RZ-DQPSK Using Four-Wave Mixing in a Semiconductor Optical Amplifier,
  21th Annual Lasers and Electro Optics Society Meeting (LEOS 2008), Newport Beach,CA,USA, November 2008, 9 - 13 November 2008,Newport Beach,CA,USA,paper MP4
• J. Grubor, Volker Jungnickel, Klaus-Dieter Langer
  Adaptive optical wireless OFDM system with controlled asymmetric clipping,
  41st Asilomar Conference on Signals,Systems and Computers, Pacific Grove,California,USA, IEEE, pp. 1896-1902, November 2008, Invited Paper, invited
• Klaus-Dieter Langer, Kai Habel, J. Grubor, Andreas Koher
  Hochratige Datenübertragung im Heimnetzbereich,
  ITG Fachtagung B reitbandversorgung in Deutschland - mehr Bandbreite für alle?, Berlin,Germany, October 2008, Oct. 1-2,2008
• Colja Schubert, Reinhold Ludwig, B. Huettl, Ronald Kaiser, H. Hu, Andreas-G. Steffan, Carsten Schmidt-Langhorst
  53.5 GHz Monolithically Integrated Pulse Source for 107 Gb/s RZ-DQPSK Transmission,
  Proc. 34th European Conference on Optical Communication (ECOC 2008), Brussels,Belgien, September 2008, Tu.3.D.3, September 21-25,2008,Brussels (BE),paper Tu.3.D.3
• Christoph Caspar, Ronald Freund, F. Achten, A. Gholami, Gerard Kuyt, Pieter Matthijsse, Denis Molin
  Impact of transceiver characteristics on the performance of 10 GbE links applying OM-4 multimode fibers,
  Proc. 57th IWCS Conference 2008, Providence Rhode Island,USA, September 2008, November 9 - 11,2008,Providence Rhode Island,USA
• B. Huettl, H. Hu, Reinhold Ludwig, Ronald Kaiser, Carsten Schmidt-Langhorst, Andreas-G. Steffan, Colja Schubert
  Linewidth Investigation of Monolithically Integrated 40 GHz Mode-Locked Laser Diodes for High-Speed RZ-DQPSK Transmission,
  Proc. 34th European Conference on Optical Communication (ECOC 2008), Brussels,Belgien, September 2008, Th.1.C.7, September 16-20,2008,Brussels (BE),paper Th.1.C.7
• G.G. Mekonnen, B. Hüttl, Heinz-Gunter Bach, Detlef Pech, Thomas Rosin, Colja Schubert, Agnieszka Konczykowska, Filipe Jorge, Muriel Riet
  InP Waveguide-integrated pin-Photodiode Hybrid Packaged with an HBT-DEMUX-Chip for Receiver Modules of 80-100 Gb/s Data Rates,
  Proc. 34th European Conference on Optical Communication (ECOC 2008), Brussels,Belgien, September 2008, September 21-25,2008,Brussels (BE),paper We.1.C.5
• K. Voigt, Lars Zimmermann, G. Winzer, Klaus Petermann, Carl-M. Weinert
  Silicon-on-insulator 90° optical hybrid using 4x4 waveguide couplers with C-band operation,
  Proc. 34th European Conference on Optical Communication (ECOC 2008), Brussels (BE), September 2008, Tu.3.C.5, September 16-20,2008,Brussels (BE),paper Tu.3.C.5
• D.C. O´Brien, G.E. Faulkner, O. Bouchet, M. El Tabach, Mike Wolf, J.W. Walewski, S. Randel, S. Nerreter, M. Franke, Klaus-Dieter Langer, J. Grubor, T. Kamalakis
  Home access networks using optical wireless transmission,
  Proc. PIMRC 2008, Cannes (FR), September 2008, September 15-18,2008
• J. Grubor
  Using LEDs twice - for illumination and information broadcasting,
  OptecBB Summer School, Berlin,Germany, August 2008, Berlin 24.08.2008
• J. Grubor, Klaus-Dieter Langer, S. Randel, J.W. Walewski
  Bandwidth-efficient indoor optical wireless communications with white light-emitting diodes,
  Proc. 6th IEEE/ IET Symposium on Communication Systems,Networks and Digital Signal Processing 2008, Graz (AU) , IEEE, pp. 165-169, July 2008
• O. Bouchet, M. El Tabach, G.E. Faulkner, M. Franke, J. Grubor, T. Kamalakis, Klaus-Dieter Langer, S. Nerreter, D.C. O´Brien, S. Randel, J.W. Walewski, Mike Wolf
  Hybrid Wireless Optics (HWO): Building the next-generation home network,
  Proc. 6th IEEE/ IET Symposium on Communication Systems,Networks and Digital Signal Processing 2008, Graz (AT) , IEEE, pp. 283-287, July 2008
• Klaus-Dieter Langer, J. Grubor, O. Bouchet, M. El Tabach, J.W. Walewski, S. Randel, M. Franke, S. Nerreter, D.C. O´Brien, G.E. Faulkner, I. Neokosmidis, G. Ntogari, Mike Wolf
  Optical wireless communications for broadband access in home area networks,
  Proc. IEEE Int. Conference on Transparent Optical Networks,ICTON 2008, Athens (GR), IEEE, pp. 149-154, June 2008, We.B4.1, Invited Paper, invited,Vol. 4,paper We.B4.1,pp. 149-154,June 23-26,2008,Athens (GR)
• Michael Schlosser, E. Patzak
  Placing Bypass Capable Nodes in Two-Layer Networks,
  9. ITG-Fachtagung 2008, Leipzig (DE) , April 2008
• D.C. O´Brien, L. Zeng, H. Le-Minh, G.E. Faulkner, O. Bouchet, S. Randel, J.W. Walewski, J.A.R. Borges, Klaus-Dieter Langer, J. Grubor, K. Lee, E.T. Won
  Visible Light Communications (White Paper),
  Wireless World Research Forum 20, Ottawa (CA), April 2008, April 22-24,2008,Ottawa (CA)
• H. Hu, L. Han, Reinhold Ludwig, Carsten Schmidt-Langhorst, J. Yu, Colja Schubert
  107 Gb/s RZ-DQPSK Signal Transmission over 108 km SMF Using Optical Phase Conjugation in an SOA,
  Proc. Optical Fiber Communication Conference (OFC 2009), San Diego,California (USA), March 2008, OThF6, 22-26 March 2009,San Diego,California (USA),paper OThF6
• Wenda Ni, Yong Guo, Q. Li, Michael Schlosser, Hanyi Zhang, Xiaoping Zheng
  Achieving Optimal Lightparth Scheuduling in Survivable WDM Mesh Networks,
  Proc. Optical Fiber Communication Conf. (OFC 2008) and National Fiber Optic Engineers (NFOEC 2008), Anaheim, CA (USA), March 2008, OWN5, paper OWN5
• Nan Hua, Michael Schlosser, Xiaoping Zheng, Bingkun Zhou
  Resource Buffering Schemes for Dynamic Traffic Groomingin Wavelength-Routed WDM Mesh Networks,
  Proc. Optical Fiber Communication Conf. (OFC 2008) and National Fiber Optic Engineers (NFOEC 2008), Anaheim, CA (USA), March 2008, OThQ7, paper OThQ7
• Lutz Molle, Ronald Freund, W. Wong, Jörg Schwartz
  Wavelength Dependent Performance of 20 Gbit/s RZ-DPSK for Upgrades of Non-Slope-Matched Submarine Transmission Systems ,
  Proc. Optical Fiber Communication Conference (OFC 2008), San Diego,California (USA), February 2008, JWA51, 24-28 February 2008,San Diego,California (USA),paper JWA51
• Ronald Freund, D.-D. Groß, Matthias Seimetz, Lutz Molle, Christoph Caspar
  30 Gbit/s RZ-8-PSK Transmission over 2800 km Standard Single Mode Fibre without Inline Dispersion Compensation,
  Proc. Optical Fiber Communication Conference (OFC 2008), San Diego,California (USA), February 2008, OMI5, 24-28 February 2008,San Diego,California (USA),paper OMI5
• Reinhold Ludwig, B. Huettl, H. Hu, Carsten Schmidt-Langhorst, Colja Schubert
  107 Gb/s RZ-DPSK Transmission over 320 km,
  Proc. Optical Fiber Communication Conference (OFC 2008), San Diego,California (USA), February 2008, OWJ6, 24-28 February, 2008paper OWJ6
• K. Cvecek, K. Sponsel, C. Stephan, G. Onishchukov, Reinhold Ludwig, Colja Schubert, B. Schmauss, G. Leuchs
  Phase-Preserving 2R Regeneration of a WDM RZ-DPSK Signal Using a Nonlinear Amplifying Loop Mirror,
  Proc. Optical Fiber Communication Conference (OFC 2008), San Diego,California (USA), February 2008, OWS3, 24-28 February 2008,San Diego,California (USA),paper OWS3
• Reinhold Ludwig, F. Futami, B. Huettl, Carsten Schmidt-Langhorst, Ryo Okabe, Shigeki Watanabe, Colja Schubert
  All-optical Amplitude Noise Suppression of 107 Gb/s DPSK,
  Proc. Optical Fiber Communication Conference (OFC 2008), San Diego,California (USA), February 2008, OWS5, 24-28 February 2008,San Diego,California (USA),paper OWS5
• Matthias Seimetz
  Laser Linewidth Limitations for Optical Systems with High-Order Modulation Employing Feed Forward Digital Carrier Phase Estimation,
  Proc. Optical Fiber Communication Conference (OFC 2008), San Diego,California (USA), February 2008, OTuM2, 24-28 February 2008,San Diego,California (USA),paper OTuM2

2007

• Kai Habel, Christoph Kottke, J. Vathke, Klaus-Dieter Langer
  Bidirectional transmission in CWDM channels using nominally identical wavelengths,
  Proc. Broadband Europe 2007, Antwerp,(BE), December 2007, We3B-5, Paper We3B-5,2007,Dec. 3-6 2007,Antwerp,(BE)
• Ronald Kaiser, B. Hüttl, Wolfgang Rehbein, S. Fidorra, Colja Schubert, H. Heidrich
  40 GHz monolithically integrated semiconductor mode-locked laser based on InP for application in high speed transmission systems,
  Workshop "Nonlinear Dynamics in Semiconductor Lasers", Weierstraß Institute Berlin, Berlin,Germany, November 2007, Invited Paper, invited talk,November 19 - 21,2007
• H. Le-Minh, D.C. O´Brien, L. Zeng, O. Bouchet, S. Randel, J.W. Walewski, J.A.R. Borges, Klaus-Dieter Langer, J. Grubor, K. Lee, E.T. Won
  Short-range visible light communications,
  Proc. Wireless World Research Forum , Chennai (IN), November 2007, 19,November 2007,Chennai (IN)
• Colja Schubert
  The Dawn of the Terabit Era:Technology and Challenges of Terabit Systems,
  Nature Photonics Technology Conference on Optical Communications 2007, Tokyo,Japan, October 2007, Invited Paper, October 23-25,2007,Tokyo (JP),invited talk
• Reinhold Ludwig, Colja Schubert, B. Huettl, Carsten Schmidt-Langhorst, R.H. Derksen, Michael Möller
  100 Gb/s ETDM Receivers,
  Proc. 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS Annual), Lake Buena Vista (USA), IEEE, October 2007, Invited Paper, invited,October 21-25,2007,Lake Buena Vista (USA),invited paper
• R.H. Derksen, Michael Möller, Colja Schubert
  100-Gbit/s full-ETDM transmission technologies,
  Proc. 29th IEEE Compound Semiconductor IC Symposium (CSICS), Portland (USA), IEEE, October 2007, G.2, October 14-17,2007,paper G.2
• Ronald Kaiser, B. Hüttl, Wolfgang Rehbein, S. Fidorra, Andreas-G. Steffan
  Monolithic Mode-Locked 40/43/53 GHz MQW DBR Lasers for Applications of Phase Encoding Modulation Formats,
  European Semiconductor Laser Workshop (ESLW), Berlin,Germany, September 2007, Invited Paper, September 14-15,2007,Berlin (DE),invited talk
• Colja Schubert
  High Speed Transmission Beyond 40 Gbit/s,
  2nd Sino-German Symposium on Optical CommunicationNetworks (SOCN), Berlin,Germany, September 2007, We14, Invited Paper, September 11-16,2007,Berlin (DE),invited paper We14
• Robert Elschner, Lutz Molle, Klaus Petermann, Thomas Richter, Colja Schubert
  Single-Pump FWM-Wavelength Conversion in HNLF using Coherent Receiver-based Electronic Compensation,
  Proc. 36th European Conference on Optical Communication (ECOC), Turin (Italy), September 2007, September 19-23,2010,Turin (Italy) P3.17
• Robert Elschner, Thomas Richter, Klaus Petermann
  Impact of Pump-Phase Modulation on Fibre-Based Parametric Wavelength Conversion of Coherently Detected PSK Signals,
  International Conference on Photonics in Switching (PiS), Pisa,Italy, September 2007, FrI1-5, September 15-19,2009,Pisa (Italy),paper FrI1-5
• Reinhold Ludwig, S. Weisser, Carsten Schmidt-Langhorst, L. Raddatz, Colja Schubert
  Unrepeatered transmission of of 160 Gb/s RZ-DPSK over 240 km Dispersion Managed Fiber,
  Proc. 33rd European Conference on Optical Communication (ECOC), Berlin,Germany, September 2007, 2.3.2, September 16-20,2007,Berlin (DE),paper 2.3.2
• Lars Zimmermann, K. Voigt, G. Winzer, T. Mitze, J. Bruns, Klaus Petermann, Thomas Richter, Colja Schubert
  Silicon-on-Insulator (SOI) Delay-Line Interferometer with Low Polarization-Dependent Frequency Shift for 40 Gbit/s DPSK Demodulation,
  Proc. 33rd European Conference on Optical Communication (ECOC), Berlin,Germany, September 2007, 7.3.4, September 16-20,2007,Berlin (DE),paper 7.3.4
• Thomas Richter, Robert Elschner, Klaus Petermann, Colja Schubert
  Tolerances of Counterphased Pump-Phase Modulation in a Fibre-Based Dual-Pump Wavelength Converter for 86 Gb/s RZ-DQPSK,
  International Conference on Photonics in Switching (PiS), Pisa,Italy, September 2007, FrI1-3, September 15-19,2009,Pisa (Italy),paper FrI1-3
• B. Hüttl
  320 Gbit/s DQPSK All-Optical Wavelength Conversion based on Four-Wave Mixing in Highly Nonlinear Fibers,
  2nd Sino-German Symposium on Optical CommunicationNetworks (SOCN), Berlin,Germany, September 2007, Fr2, September 11-16,2007,talk Fr2
• A. Demircan, U. Bandelow, B. Hüttl, M. Kroh
  Generation of new Frequencies by Pulse Splitting,
  Proc. 33rd European Conference on Optical Communication (ECOC), Berlin,Germany, September 2007, September 16-20,2007,poster P023
• Leonardo-D. Coelho, Christoph Caspar, Ronald Freund, Dirk-Daniel Gross, Norbert Hanik, Lutz Molle, Ernst-Dieter Schmidt
  Numerical and Experimental Investigation of the Effect of Dispersion on Nonlinear Phase Noise in RZ-DPSK,
  ECOC 2007, Berlin (DE) , September 2007
• J. Grubor, S.C.J. Lee, Klaus-Dieter Langer, T. Koonen, J.W. Walewski
  Wireless high-speed data transmission with phosphorescent white-light LEDs,
  Proc. European Conference and Exhibition on Optical Communication (ECOC) 2007, Berlin,Germany, September 2007, PD3.6, postdeadline6,September 16-20,2007,Vol. 6,Post-Deadline Paper PD3
• Reinhold Ludwig
  Transmission Systems Beyond 1 Tbit/s: Status and Technologies,
  Proc. 3rd International Symposium on Ultrafast Photonic Technologies (ISUPT),Massachusetts Institute of Technology, Boston (USA), August 2007, August 20-21,2007,Massachusetts Institute of Technology
• Ronald Kaiser, B. Huettl
  Monolithic Mode-Locked 40 GHz DBR Laser Modules für High-Speed Transmission Systems Utilizing Phase Modulation Formats,
  Proc. 9th Intern. Conf. on Transparent Optical Networks (ICTON 2007), Rome,Italy, July 2007, Invited Paper, invited,July 1–5 (2007),Rome (IT),invited paper
• Reinhold Ludwig, Carsten Schmidt-Langhorst, B. Huettl, Colja Schubert, S. Weisser, L. Raddatz
  Transmission Systems beyond 100 Gbit/s: Status and Technologies,
  2007 Digest of the LEOS Summer Topical Meetings, Portland (USA), pp. 228-229, July 2007, ME3.2, Invited Paper, invited,23-25 July 2007,paper ME3.2 (invited)
• S. Weisser, Colja Schubert, Reinhold Ludwig, W. Müller, L. Raddatz, O. Wohlgemuth
  85.2 Gbit/s NRZ-DQPSK DWDM Transmission over 2000 km Non-Zero Dispersion Shifted Fiber,
  Proc. 12th Optoelectronics and Communications Conference / 16th International Conference on Integrated Optics and Optical Fiber Communication (OECC/IOOC 2007), Yokohama (JP), July 2007, PD1-3, July 9-13,2007,Yokohama (JP),postdeadline paper PD1-3
• A. Umbach, G. Unterbörsch, Heinz-Gunter Bach, Colja Schubert, R.H. Derksen, J.H. Sinsky
  Photoreceivers for 100 Gbit/s Applications,
  2007 Digest of the LEOS Summer Topical Meetings, Portland (USA), July 2007, Invited Paper, invited,invited paper,July 23-25,2007,
• Reinhold Ludwig, S. Weisser, Carsten Schmidt-Langhorst, L. Raddatz, Colja Schubert
  Unrepeatered Transmission of 160 Gb/s RZ-DPSK over 293 km Dispersion Managed Fiber using Optimized Raman Amplification and Advanced Forward-Error-Correction,
  Proc. 12th Optoelectronics and Communications Conference / 16th International Conference on Integrated Optics and Optical Fiber Communication (OECC/IOOC 2007), Yokohama,Japan, July 2007, July 9-13,2007,Yokohama (JP),postdeadline paper PD1-4
• Thomas Richter, Robert Elschner, Lutz Molle, Klaus Petermann, Colja Schubert
  Coherent Receiver-based Compensation of Phase Distortions induced by Single-Pump HNLF-based FWM Wavelength Converters,
  Photonics in Switching, Monterey,California,(USA), July 2007, PWB2, Invited Paper, invited,July 25-28,Monterey,California,(USA),paper PWB2
• Carsten Schmidt-Langhorst
  Terabit-Übertragung auf einem einzelnen Wellenlängenkanal,
  Kolloquium Optische Nachrichtentechnik,TU Wien, Wien (Österreich), June 2007, TU Wien (Österreich),14.06.2007
• Ronald Freund
  Upgrade von optischen Unterwasser-Übertragungssystemen mit höheren Datenraten und neuen Modulationsverfahren,
  Kolloquium TU Kiel, Kiel (DE), June 2007, ,11.06.2007,Kiel (DE)
• Reinhold Ludwig, Carsten Schmidt-Langhorst, Colja Schubert, B. Hüttl, Hans-Georg Weber
  Ultrafast Optical Transmission Technologies,
  Proc. Conference on Lasers and Electro-Optics / International Quantum Electronics Conference (CLEO Europe / IQEC), Munich,Germany, June 2007, Invited Paper, invited,June 17-22,2007,Munich (DE),invited paper
• D. O’Brien, O. Bouchet, S. Randel, J.W. Walewski, Klaus-Dieter Langer, J. Grubor, J.A. Rabadan Borges, R. Perez Jimenez, E.T. Won
  Briefing on Visible-Light Communications: Update and Key Questions for Whitepaper,
  Wireless World Research Forum, Espoo,Finnland, June 2007, June 13-15,2007,Espoo (FN)
• Colja Schubert, Reinhold Ludwig, Carsten Schmidt-Langhorst, S. Weisser, L. Raddatz
  160 Gbit/s RZ-DPSK OTDM Übertragung über 480 km mit 160 km Repeaterabstand,
  Proc. 8. ITG-Fachtagung Photonische Netze, Leipzig (DE), May 2007, May 7-8,2007,Leipzig (DE)
• Ronald Freund, Stuart Barnes, Christoph Caspar, Lutz Molle, Jörg Schwartz, S. Webb
  Higher Bitrates and Advanced Modulation Formats Facilitate Overlay Upgrades of Installed Submarine Systems,
  8. ITG-Fachtagung Photonische Netze, Leipzig (DE) , May 2007
• R.H. Derksen, Colja Schubert, S.L. Jansen, X. Zhou, M. Birk
  Field trial on 107 Gbit/s transmission with pure electrical time-division multiplex over 160 km ,
  Proc 8. ITG-Fachtagung Photonische Netze, Leipzig (DE), May 2007, May 7-8,2007,Leipzig (DE)
• B. Huettl, Alexandre Gual i Coca, H. Suche, Reinhold Ludwig, Carsten Schmidt-Langhorst, Hans-Georg Weber, W. Sohler, Colja Schubert
  320 Gbit/s DQPSK All-Optical Wavelength Conversion using Periodically Poled LiNbO3,
  Proc. Conf. on Lasers and Electro-Optics / International Quantum Electronics (CLEO/QELS), Baltimore (USA), May 2007, CThF1, May 6-11,2007,Baltimore (USA),paper CThF1
• Jörg Schwartz, Stuart Barnes, Christoph Caspar, Ronald Freund, Lutz Molle, S. Webb
  Higher Bitrates and Advanced Modulation Formats Facilitate Overlay Upgrades of Installed Submarine Systems,
  SubOptic 2007, Baltimore, MD (US) , May 2007
• P. Gelpke, H. Buchta, E. Patzak, Michael Schlosser
  TCP Performance in OBS Networks with Load Dependent Contention,
  Proc. 8. ITG-Fachtagung Photonische Netze, Leipzig (DE) , pp. 163-170, May 2007
• Colja Schubert, Reinhold Ludwig, B. Huettl, H. Hu, Carsten Schmidt-Langhorst
  107 Gbit/s RZ-DPSK Transmission using an,
  Proc 9. ITG-Fachtagung Photonische Netze 2007, Leipzig,Germany, April 2007, April 28-29,2007,Leipzig (DE)
• Egon Schulz, Martin Schubert, Volker Jungnickel, Lars Thiele
  Cooperative Antenna Concepts for Interference Mitigation,
  13th European Wireless Conference, Paris, France, April 2007
• Johannes Fischer, Reinhold Ludwig, Lutz Molle, Carsten Schmidt-Langhorst, Andrey Galperin, Thomas Richter, C.C. Leonhardt, A. Matiss, Colja Schubert
  High-Speed Digital Coherent Receiver with Parallel Optical Sampling,
  Proc. Optical Fiber Communication Conference (OFC 2010), San Diego,California (USA), March 2007, PDPB4, post-deadline paper PDPB4
• Carsten Schmidt-Langhorst, Reinhold Ludwig, Michael Galili, B. Hüttl, F. Futami, Shigeki Watanabe, Colja Schubert
  Applications of Highly Nonlinear Fibers for 160 Gbit/s All-Optical Data Format Conversion,
  Workshop "Nonlinear Effects in Photonic Materials",Weierstrass Institute for Applied Analysis and Stochastics (WIAS), Berlin,Germany, March 2007, March 12-14,2007,Berlin (Germany)
• Lutz Molle, Christoph Caspar, S. Desbruslais, Ronald Freund, R. Oberland, Jörg Schwartz
  Upgrades of Non-Slope Matched Submarine Transmission Systems Using Differential Phase Shift Keying,
  Proc. Optical Fiber Communication Conference (OFC 2007), Anaheim, CA (US) , March 2007, OTuG4
• Alexandre Gual i Coca, B. Hüttl, Reinhold Ludwig, Carsten Schmidt-Langhorst, Colja Schubert
  320 Gbit/s All Optical Wavelength Conversion Using Periodically Poled Lithium Niobate ,
  Workshop "Nonlinear Effects in Photonic Materials",Weierstrass Institute for Applied Analysis and Stochastics (WIAS), Berlin,Germany, March 2007, March 12-14,2007
• B. Hüttl, Alexandre Gual i Coca, Michael Galili, Colja Schubert, Carsten Schmidt-Langhorst, Reinhold Ludwig, Hans-Georg Weber, Robert Elschner, C.-A. Bunge
  All Optical Wavelength Conversion by Four Wave Mixing in Highly Nonlinear Fibers for 160 Gbit/s Phase Modulated Signals,
  Workshop "Nonlinear Effects in Photonic Materials",Weierstrass Institute for Applied Analysis and Stochastics (WIAS), Berlin,Germany, March 2007, March 12-14,2007,Berlin (Germany)
• S.L. Jansen, M. Birk, Marc Bohn, Huug de Waardt, R.H. Derksen, F. Horst, G.D. Khoe, Andreas Kirstädter, P.M. Krummrich, Michael Möller, B.J. Offrein, Colja Schubert, D. van den Borne, Claus-Jörg Weiske, X. Zhou
  107-Gb/s Full -ETDM transmission over field installed fiber using vestigial sideband modulation,
  Proc. Optical Fiber Communication Conference (OFC 2007) and National Fiber Optic Engineers Conference (NFOEC 2007), Anaheim, CA (US) , March 2007, OWE3
• Gottfried Lehmann, R.H. Derksen, Colja Schubert, M. Winter
  100 Gigabit Ethernet Transmission - Physical Layer Issues,
  Proc. Optical Fiber Communication Conference (OFC 2007) and National Fiber Optic Engineers Conference (NFOEC 2007), Anaheim,CA,(USA), March 2007, OThD5, Invited Paper, invited,March 25-29,2007,Anaheim (USA),paper OThD5
• F. Futami, Reinhold Ludwig, Ryo Okabe, S. Ono, Carsten Schmidt-Langhorst, Colja Schubert, Shigeki Watanabe
  All-optical Amplitude Noise Suppression of Both 160-Gb/s OOK and DPSK Data Signals by Parametric Fiber Switch,
  Proc. Optical Fiber Communication Conference (OFC 2007) and National Fiber Optic Engineers Conference (NFOEC 2007), Anaheim,CA,(USA), March 2007, OThB3, March 25-29,2007,Anaheim (USA),paper OThB3
• Reinhold Ludwig, L. Raddatz, Carsten Schmidt-Langhorst, Colja Schubert, S. Weisser
  160 Gb/s DPSK OTDM-Transmission over 480 km using 160 km Repeater Spans and Advanced Forward-Error-Correction,
  Proc. Optical Fiber Communication Conference (OFC 2007) and National Fiber Optic Engineers Conference (NFOEC 2007), Anaheim,CA,(USA), March 2007, OWE4, March 25-29,2007,Anaheim (USA),paper OWE4
• Michael Galili, A. Gual, B. Hüttl, Reinhold Ludwig, Carsten Schmidt-Langhorst, Colja Schubert
  320 Gbit/s DQPSK All-Optical Wavelength Conversion using Four Wave Mixing,
  Proc. Optical Fiber Communication Conference (OFC 2007) and National Fiber Optic Engineers Conference (NFOEC 2007), Anaheim,CA,(USA), March 2007, OTuI3, March 25-29,2007,Anaheim (USA),paper OTuI3
• Michael Galili, F. Futami, B. Hüttl, Reinhold Ludwig, Carsten Schmidt-Langhorst, Colja Schubert, Shigeki Watanabe
  All-Optical Combination of DPSK and OOK to 160 Gbit/s DQPSK Data Signals,
  Proc. Optical Fiber Communication Conference (OFC 2007) and National Fiber Optic Engineers Conference (NFOEC 2007, Anaheim,CA,(USA), March 2007, OThI5, March 25-29,2007,Anaheim (USA),paper OThI5
• Cristina Arellano, Klaus-Dieter Langer, Josep Prat
  On the influence of ONU-gain on transmission in centrally seeded-light WDM-PONs,
  Proc. Optical Fiber Communication Conference (OFC 2007) and National Fiber Optic Engineers Conference (NFOEC 2007), Anaheim, CA (USA), March 2007, OTuG4, Paper OTuG4, March 25-29,2007, Anaheim (USA)
• Godehard Walf
  Inhouse Networks - the Last Meter to a Broadband World - Potentials of new Technologies,
  BITKOM Forum Berlin, Berlin,Germany, March 2007, Invited Paper, 27. März 2007,Berlin (DE)

2006

• Colja Schubert, Sebastian Ferber, B. Huettl, Reinhold Ludwig, Carsten Schmidt-Langhorst, Hans-Georg Weber
  Single channel transmission beyond 1 Tbit/s,
  Proc. 19th Annual Meeting of the IEEE Lasers and Electro-Optics Society  (LEOS 2006),29 October - 2 November 2006,Montreal (Canada), Montreal (CA), IEEE, October 2006, ThX1, Invited Paper, invited
• Reinhold Ludwig, Sebastian Ferber, Colja Schubert, Carsten Schmidt-Langhorst, B. Huettl, Hans-Georg Weber
  Single Channel Transmission beyond 1 Tbit/s,
  Proc. Frontiers in Optics 2006 The 90th OSA Annual Meeting Laser Science XXII (OSA 2006), Rochester (USA), October 2006, FTuP5, Invited Paper, invited,8-12 October 2006,Rochester (USA),paper FTuP5
• Jörg Schwartz, Stuart Barnes, Christoph Caspar, Ronald Freund, Lutz Molle, S. Webb
  Upgrades of Submarine Systems using Higher Bitrates and Advanced Modulation Formats,
  Proc. Asia Optical Fiber Communication & Optoelectronic Exposition (AOE 2006), Shanghai (CN), pp. 126-128, October 2006
• Colja Schubert, R.H. Derksen, Sebastian Ferber, Reinhold Ludwig, Joachim Lutz, Michael Möller, Carsten Schmidt-Langhorst, Claus-Jörg Weiske
  107 Gbit/s Transmission Using An Integrated ETDM Receiver,
  Proc. 32nd European Conference on Optical Communications  (ECOC 2006), Cannes (France), pp. 33-34, September 2006, Tu1.5.5, 24-28 September 2006,Cannes (France) Vol. 2,pp. 33-34, paper Tu1.5.5
• Carsten Schmidt-Langhorst, F. Futami, Michael Galili, B. Huettl, Reinhold Ludwig, Colja Schubert, Shigeki Watanabe
  160 Gbit/s All-Optical OOK to DPSK In-Line Format Conversion,
  Proc. 32nd European Conference on Optical Communications  (ECOC 2006), Cannes (France), pp. 37-38, September 2006, Th4.3.5, postdeadline,24-28 September 2006,Cannes (France) Vol. 6,pp. 37-38,postdeadline paper Th4.3.5
• Ronald Freund, Stuart Barnes, Christoph Caspar, Lutz Molle, Jörg Schwartz, S. Webb
  Mixed Bitrate and Modulation Format Upgrade of Non-Slope Matched Submarine Links,
  Proc. 32nd European Conference on Optical Communication (ECOC 2006), Cannes (France), pp. 65-66, September 2006, Th1.6.5, paper Th1.6.5,Vol. 4,pp. 65-66
• Reinhold Ludwig, Sebastian Ferber, B. Huettl, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  Ultrafast Transmission technology,
  Optical Transmission,Switching and Subsystems IV,Proc. of SPIE (APOC 2006), Gwangju, Korea (South), September 2006, Invited Paper, invited,Vol. 6353,paper 6353-81
• S. Weisser, Reinhold Ludwig, L. Raddatz, Colja Schubert
  2000 km DWDM Transmission of 85.2 Gbit/s DQPSK Data with 100 GHz Channel Spacing over Non-Zero Dispersion Shifted Fiber,
  Proc. 32nd European Conference on Optical Communications (ECOC 2006), Cannes (France), pp. 7-8, September 2006, Mo3.2.4, 24-28 September 2006,Cannes (France) Vol.1,pp. 7-8,paper Mo3.2.4
• Christian Meuer, Dieter Bimberg, Sebastian Ferber, Gerrit Fiol, A.R. Kovsh, M. Kuntz, M. Laemmlin, Nikolay Ledentsov, Colja Schubert, Andreas-G. Steffan, A. Umbach
  High Frequency Signal Amplification using Quantum Dot Semiconductor Optical Amplifiers at 1.3 µm,
  Proc. 32nd European Conference on Optical Communications  (ECOC 2006), Cannes (France), pp. 543-544, September 2006, We4.6.5, 24-28 September 2006,Cannes (France) Vol.3,pp. 543-544,paper We4.6.5
• S. Kiekbusch, E. Brinkmeyer, Sebastian Ferber, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  Automatic Compensation of PMD and Chromatic Dispersion in a 160 Gb/s Transmission Experiment,
  Proc. 32nd European Conference on Optical Communications  (ECOC 2006), Cannes (France), pp. 177-178, September 2006, Th3.5.1, 24-28 September 2006,Cannes (France) Vol.4,pp. 177-178,paper Th3.5.1
• J.J. Lepley, Kai Habel, A.M.J. Koonen, Klaus-Dieter Langer, A. Ng´oma, G.-J. Rijckenberg, M.P. Thakur, I. Tsalamanis, Stuart Walker
  Interoperability of Simultaneous Last Mile Access Technologies over a Passiv Optical Ring Network: Results of the MUSE Demonstration,
  Proc. European Conference on Optical Communication (ECOC 2006), Cannes (FR) , pp. 45-46, September 2006
• Colja Schubert, Carsten Schmidt-Langhorst, Reinhold Ludwig, Sebastian Ferber, B. Huettl, Hans-Georg Weber
  Terabit Transmission on a Single Wavelength Channel,
  Proc. 11th European Conference on Networks & Optical Communications (NOC 2006), Berlin,Germany, pp. 105-108, July 2006, Invited Paper, invited, 10-13 July 2006,Berlin (Germany)
• Carsten Schmidt-Langhorst, M. Kroh, Sebastian Ferber, V. Marembert, Colja Schubert, Reinhold Ludwig, B. Hüttl, Hans-Georg Weber
  Generation and Transmission of Terabit/s Optical Data Signals,
  Workshop "Nonlinear Dynamics in Modelocked Lasers and Optical Fibers" by the Weierstrass Institute for Applied Analysis and Stochastics and the Humboldt University of Berlin,Institute of Physics, Berlin,Germany, July 2006, 13.-14.07.06
• Kai Habel, T. Koonen, Klaus-Dieter Langer, J.J. Lepley, A. Ng´oma, G.-J. Rijckenberg, Stuart Walker
  Broadband Access Solutions on a Common CWDM Platform,
  Proc. 11th European Conference on Networks and Optical Communications (NOC 2006), Berlin (DE) , pp. 157-164, July 2006
• Reinhold Ludwig, S. Feber, Colja Schubert, Carsten Schmidt-Langhorst, B. Huettl, Hans-Georg Weber
  Single Channel Transmission beyond 1 Tbit/s: Technology and Challenges,
  Proc. 11th OptoElectronics and Communications Conference (OECC 2006), Kaohsiung (Taiwan), July 2006, 4F2-1, Invited Paper, invited,3-7 July 2006,Kaohsiung (Taiwan),paper 4F2-1
• Reinhold Ludwig, Colja Schubert, S. Weisser, L. Raddatz
  5.4 Tbit/s (64*85.2) Gbit/s DQPSK Transmission with 100 GHz Channel Spacing over 2000 km Non-Zero Dispersion Shifted Fiber,
  Proc. 11th OptoElectronics and Communications Conference (OECC 2006), Kaohsiung (Taiwan), July 2006, postdeadline,3-7 July 2006,Kaohsiung (Taiwan), postdeadline paper
• S. Chennu, Kai Habel, Klaus-Dieter Langer
  QoS-aware Traffic Protection for Access Rings,
  Proc. 11th European Conference on Networks & Optical Communications (NOC 2006), Berlin (DE) , pp. 165-174, July 2006
• E. Patzak
  Hybrid solutions for advanced burst/packet switching networks,
  Proc. 11th European Conference on Networks and Optical Communications (NOC 2006), Berlin (DE), July 2006
• J. Grubor, Volker Jungnickel, Klaus-Dieter Langer
  Bit-Loading for Modulation-Adaptive Transmission in Infrared Wireless Indoor Communication,
  Proc. International Conference on Access Technologies (IET 2006), London (UK), pp. 9-12, June 2006
• G. Großkopf, Kai Habel, Wilhelm Keusgen, Klaus-Dieter Langer, D. Rohde
  1.25 Gbit/s indoor radio link extension of a Gigabit Ethernet CWDM access network,
  Proc. IET International Conference on Access Technologies 2006, Cambridge (UK), pp. 25-28, June 2006
• Klaus-Dieter Langer, Cristina Arellano, Kai Habel, J. Vathke
  Recent developments on WDM-PON technology (invited),
  Proc. International Conference on Transparent Optical Networks (ICTON 2006), Nottingham (UK) , pp. 12-13, June 2006
• J.J. Lepley, Kai Habel, Klaus-Dieter Langer, M.P. Thakur, I. Tsalamanis, Stuart Walker
  Hybrid fibre-VDSL transmission over a CWDM passive ring access network,
  Proc. International Conference on Telecommunications (ICT 2006), Madeira (P), May 2006
• Colja Schubert, Sebastian Ferber, Reinhold Ludwig, Carsten Schmidt-Langhorst, Hans-Georg Weber
  High-speed Transmission based on a 40 Gbaud DQPSK System,
  7. ITG Fachtagung Photonische Netze,ITG Fachbericht 193, Leipzig (Germany), pp. 45-49, April 2006, 27-28 April 2006
• Matthias Seimetz
  Performance of Coherent Optical Square-16-QAM-Systems based on IQ-Transmitters and Homodyne Receivers with Digital Phase Estimation,
  Proc. Fiber Optic Engineers Conf. (NFOEC 2006),Anaheim (USA), Anaheim,CA,(USA), April 2006, NWA4
• J. Vathke, C. Paul, W. Wenisch, Klaus-Dieter Langer
  Breitbandige optische Zugangsnetze mit CWDM: Stand der Technik und Perspektiven,
  ITG Fachbericht 193,Photonische Netze 2006, Leipzig, pp. 37-44, April 2006
• R.H. Derksen, Gottfried Lehmann, Claus-Jörg Weiske, Colja Schubert, Reinhold Ludwig, Sebastian Ferber, Carsten Schmidt-Langhorst, Joachim Lutz, Michael Möller
  Integrated 100 Gbit/s ETDM Receiver in a Transmission Experiment over 480 km DMF,
  Proc. Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2006), Anaheim,CA,(USA), March 2006, postdeadline
• Sven Bauer, M. Biletzke, C. Castar, H. Ding, Ronald Freund, J. Kreissl, Lutz Molle, B. Sartorius
  Compact RZ-DPSK Transmitter Applying a PhaseCOMB Laser as Carved Source,
  Proc. Optical Fiber Communication Conference (OFC 2006),Anaheim (USA), Anaheim,CA,(USA), March 2006, doi: 10.1109/OFC.2006.215720, OThG6
• V. Marembert, Sebastian Ferber, M. Kroh, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  Investigation of fiber based gates for time division demultiplexing up to 640 Gbit/s,
  Proc. 2006 Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, Anaheim,CA,(USA), March 2006, OWI12, 5-10 March 2006, paper OWI12
• M. Kroh, Sebastian Ferber, Reinhold Ludwig, V. Marembert, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  Transmitter enabling Ultra-High-Speed Transmission of Phase Modulated Data Signals up to 640,
  2006 Optical Fiber Communication Conference and National Fiber Optic Engineers Conference,5-10 March 2006, Anaheim,CA,(USA), March 2006, OWW1, Invited Paper, invited,5-10 March 2006, paper OWW1
• Pieter Matthijsse, F. Achten, Andreas Beling, Christoph Caspar, Th. Eckhardt, Ronald Freund, F. Gooijer, Gerard Kuyt, Lutz Molle, Thomas Rosin, Daniel Schmidt
  Multimode Fiber enabling 40 Gbit/s multi-mode Transmission over Distance > 400 m,
  Proc. Optical Fiber Communication Conference (OFC 2006), Anaheim,CA,(USA), March 2006, OWI13
• J. Grubor, Volker Jungnickel, Klaus-Dieter Langer
  Rate-Adaptive Multiple Sub-carrier-Based Transmission for Broadband Infrared Wireless Communication,
  Proc. National Fiber Optic Communication Conference (NFOEC 2006), Anaheim, CA, USA, March 2006
• Cristina Arellano, Carlos Bock, Klaus-Dieter Langer, Josep Prat
  RSOA-based optical network units for WDM-PON,
  Proc. Optical Fiber Communication Conference (OFC 2006), Anaheim, CA (US) , March 2006, OTuC1
• Reinhold Ludwig
  Ultrafast Transmission Technology,
  International Symposium on Photonics and Advanced Networks (ISPAN 2006), Tokyo,Japan, January 2006, Invited Paper, invited,10 January 2006,Tokyo (Japan)
• Reinhold Ludwig, Sebastian Ferber, M. Kroh, V. Marembert, C. Schmidt, Colja Schubert, Hans-Georg Weber
  All Optical Signal Processing Technologies and Their Applications,
  Proc. Ninth International Symposium on Contemporary Photonics Technology (CPT 2006), Tokyo (Japan), pp. 145-148, January 2006, Invited Paper, invited,January 11-13 2006,Tokyo (Japan),Vol. 09 G-1 pp. 145-148

2005

• Matthias Seimetz, Ronald Freund
  Coherent Systems using Multi-Level Modulation Formats and Electronic Distortion Equalisation,
  Proc. Workshop on Optical Transmission an Equalisation (WOTE 2005), Shanghai,China, pp. 19-20, November 2005, B1
• G.J. Eilenberger, Michael Schlosser
  Long Term Network Scenarios based on OBS/OPS,
  Joined Workshop NOBEL/MUPBED 2005, Turin (I) , November 2005
• A. Richter, Ronald Freund, I. Koltchanov, D. Rukhlenko
  BER Estimation for DPSK and DQPSK Systems,
  Workshop der ITG Fachgruppe 5.3.1, Berlin (DE), November 2005
• L. Nederlof, D. Breuer, Christoph Caspar, H. Cremer, Ronald Freund, Matthias Gunkel, D. Mirto, F. Raub, H. Reiner, S. Ten
  Cost Optimization Study using Dispersion-Managed Fiber in a German Backbone Network,
  Proc. 5th International Workshop on Design of Reliable Communication Networks (DCRN 2005), Island of Ischia (I), October 2005
• Colja Schubert, Sebastian Ferber, M. Kroh, Carsten Schmidt-Langhorst, Reinhold Ludwig, B. Hüttl, Ronald Kaiser, Hans-Georg Weber
  40 GHz semiconductor mode-locked laser pulse source for 160 Gbit/s RZ-DPSK data transmission,
  Proc. 31th European Conference on Optical Communications (ECOC 2005), Glasgow (UK), p. 167, September 2005, Tu1.5.3, 25-29 September,Glasgow (UK),p. 167-8 vol. 2,paper Tu1.5.3
• Ronald Freund, Christoph Caspar, M. Karkri, Lutz Molle, F. Raub, Hans-Georg Weber
  Triple-(/S/C/L)-Band WDM Transmission using Erbium-Doped Fibre Applifiers,
  Proc. 31st European Conference on Optical Communication (ECOC 2005), Glasgow (UK), pp. 69-70, September 2005, Mo4.2.3
• C. Boerner, A. Benz, Sebastian Ferber, Reinhold Ludwig, L. Raddatz, Hans-Georg Weber, S. Weisser
  Burst switching capability of electro-optical PLL-based clock recovery for 170 Gbit/s,
  Proc. 31th Europ. Conference on Optical Communication (ECOC 2005), Glasgow (UK), p. 385, September 2005, Glasgow (UK),p. 385-6 vol. 3
• Sebastian Ferber, C. Boerner, Reinhold Ludwig, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  640 Gbit/s DQPSK single-channel transmission over 480 km fibre link,
  Proc. 31th Europ. Conf. on Opt. Comm. (ECOC 2005), Glasgow (UK), p. 437, September 2005, Glasgow (UK),p. 437-8 vol. 3
• Reinhold Ludwig, C. Boerner, Sebastian Ferber, W.S. Lee, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  80 Gbit/s DPSK transmission over 480 km dispersion-managed fiber with balanced detection ETDM receiver,
  Proc. 31th Europ. Conf. on Opt. Comm. (ECOC 2005), Glasgow (UK), p. 381, September 2005, p. 381-2 vol. 3
• Sebastian Ferber, C. Boerner, Reinhold Ludwig, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  640 Gbit/s DQPSK Single-channel Transmission over 480 km fibre link,
  Electronics Letters, Glasgow (UK), pp. 1236-1237, September 2005, vol 41,no. 22 (27 Oct. 2005),pp. 1236-1237
• Reinhold Ludwig
  Ultrafast transmission technology,
  Proc. 31th Europ. Conf. on Opt. Comm. (ECOC), Glasgow (UK), pp. 159-188, September 2005, Invited Paper, invited,25-29 Sep. 2005,Glasgow (UK),vol. 5,pp. 159-188
• Hans-Georg Weber, C. Boerner, Sebastian Ferber, F. Futami, M. Kroh, Reinhold Ludwig, V. Marembert, Carsten Schmidt-Langhorst, Colja Schubert, Shigeki Watanabe
  Single Channel 1.28 Tbit/s and 2.56 Tbit/s DQPSK Transmission,
  Proc. 31th Europ. Conf. on Opt. Comm. (ECOC 2005), Glasgow (UK), pp. 3-4, September 2005, postdeadline
• Matthias Gunkel, D. Breuer, Christoph Caspar, H. Cremer, Ronald Freund, D. Mirto, L. Nederlof, F. Raub, H. Reiner, S. Ten
  Dispersion-Managed fiber (DMF): Experimental & Economic Evaluation,
  Proc. 31st European Conference on Optical Communication (ECOC 2005), Glasgow (UK), pp. 515-516, September 2005, We4.P.007
• V. Marembert, A.M. Melo, Klaus Petermann, S. Randel, Colja Schubert, Hans-Georg Weber
  Reduction of pattern effects in an SOA-based 40 Gb/s wavelength converter,
  Proc. Optical Amplifiers and Applications (OAA 2005), Budapest (Hungary), August 2005
• Reinhold Ludwig, C. Boerner, Sebastian Ferber, M. Kroh, V. Marembert, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  Technologies enabling ultrahigh speed transmission,
  Proc. Optical Amplifiers and Applications (OAA 2005), Budapest (Hungary), August 2005, Invited Paper, invited,Budapest (Hungary),SUB 2
• Michael Schlosser, P. Gelpke, E. Patzak
  Impact of Deflection Routing on TCP Performance in Optical Burst Switching Networks,
  Proc. 7th International Conference on Transporant Optical Networks (ICTON 2005), Barcelona (SP), pp. 220-223, July 2005
• Matthias Seimetz
  Multi-format Transmitters for Coherent Optical M-PSK and M-QAM Transmission,
  Proc. 7th International Conferenz on Transparent Optical Networks (ITCON 2005), Barcelona,Spain, July 2005, Th.B1.5
• Reinhold Ludwig, A. Benz, C. Boerner, Sebastian Ferber, L. Raddatz, Hans-Georg Weber, S. Weisser
  Single channel 170 Gbit/s transmission up to 4000 km using dispersion managed fiber spans and all raman amplification,
  Proc. 10th Optoelectronics and Commun. Conf. (OECC), Seoul (Korea), July 2005, postdeadline
• M. Malach, C.-A. Bunge, Ronald Freund, Lutz Molle, Klaus Petermann, H.J. Thiele
  Cross-Phase Modulation Suppression Method in Multispan Dispersion-Managed WDM Transmission Systems,
  Proc. 7th International Conference on Transparent Optical Networks (ITCON 2005), Barcelona, Spain , pp. 68-71, July 2005, We.C1.2
• Reinhold Ludwig, Sebastian Ferber, C. Boerner, Colja Schubert, Carsten Schmidt-Langhorst, M. Kroh, V. Marembert, Hans-Georg Weber
  160 Gbit/s transmission systems, ready for operation?,
  Proc. 10th Optoelectronics and Commun. Conf. (OECC), Seoul (Korea), pp. 772-773, July 2005, Invited Paper, invited
• J. Grubor, Volker Jungnickel, Klaus-Dieter Langer
  Capacity Analysis in indoor Wirless Infrared Communication using Adaptive Multiple Subcarrier Transmission,
  Proc. 7th International Conference on Transparent Optical Networks (ITCON 2005), Barcelona, Spain , pp. 171-174, July 2005
• Cristina Arellano, Carlos Bock, Klaus-Dieter Langer, Josep Prat, Matthias Seimetz
  Crosstalk mitigation using Subcarrier Multiplexing an Forward Error Correction in reflection-mode ONU systems,
  Proc. (NOC 2005),10th Europ. Conf. On Networks & Optical Communications, London (UK), pp. 271-276, July 2005
• Klaus-Dieter Langer, Kai Habel, F. Raub, Matthias Seimetz
  CWDM access network and prospects for introduction of full duplex wavelength channels,
  Proc. 10th Europ. Conf. On Networks & Optical Communications (NOC 2005), London (UK), pp. 68-75, July 2005
• M. Kroh, Sebastian Ferber, B. Hüttl, Hans-Georg Weber
  Low noise 400 fs pulse generation by monolithic semiconductor mode-locked laser and soliton pulse compression,
  Proc. Electro-Optics Europe (CLEO/Europe 2005), Munich (DE), p. 125, June 2005
• J. Mulet, M. Kroh, J. Mørk
  Pulsewidth and noise properties of external-cavity mode-locked semiconductor lasers: Simulations and experiments,
  Proc. Electro-Optics Europe (CLEO/Europe), Munich (Germany), p. 7, June 2005, 12-17 June 2005,Munich (Germany), p. 7
• Michael Schlosser, P. Gelpke, E. Patzak
  Auswirkungen von Deflection Routing auf die TCP Performance in Optical Burst Switching Netzen,
  Proc. 6. ITG-Fachtagung Photonische Netze,2005, Leipzig (DE) , May 2005
• Sebastian Ferber, C. Boerner, M. Kroh, Reinhold Ludwig, V. Marembert, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  160 Gbit/s transmission with long-term stability,
  6. ITG-Fachtagung "Photonische Netze", Leipzig (DE), pp. 71-78, May 2005
• Matthias Seimetz, Kai Habel, C. Paul
  Effizienz von Forward Error Correction zur Crosstalk-Unterdrückung bei bidirektionaler Einfaserübertragung,
  ITG Fachbericht 185,Photonische Netze 2005, Leipzig (DE), pp. 181-185, May 2005, ITG Fachbericht 185
• Carsten Schmidt-Langhorst, C. Boerner, Reinhold Ludwig, Colja Schubert
  Optical Sampling Technologies and Applications,
  Proc. 30th Conf. Optical Fiber Communications (OFC 2005), Anaheim (CA,US), March 2005, OtuG2, Invited Paper, invited
• Carsten Schmidt-Langhorst, C. Boerner, Sebastian Ferber, Reinhold Ludwig, V. Marembert, Colja Schubert, Hans-Georg Weber
  Optical sampling system including clock recovery for 320 Gbit/s DPSK and OOK data signals,
  Proc. 30th Conf. Optical Fiber Communications (OFC 2005), Anaheim (CA,US), March 2005, OWJ6
• Colja Schubert, V. Marembert, Carsten Schmidt-Langhorst, K. Schulze, Hans-Georg Weber
  Time division add-drop multiplexing up to 320 Gbit/s,
  Proc. 30th Conf. Optical Fiber Communications (OFC 2005), Anaheim (CA,US), March 2005, OThN2
• Ronald Freund, Lutz Molle, H.J. Thiele
  System margins and parameter tolerances of optical transmission sections in metro-networks for 40-Gbit/s-NRZ-ASK transmission,
  Proc. National Fiber Optic Engineers Conference (NFOEC 2005), Anaheim, CA (USA), March 2005, NThB1
• Andreas Beling, Heinz-Gunter Bach, Th. Eckhardt, Reinhard Kunkel, G.G. Mekonnen, Daniel Schmidt, Colja Schubert
  Highly efficient PIN photodetector module for 80 Gbit/s and Beyond,
  Techn. Dig. 30th Optical Fiber Communications Conf. (OFC 2005), Anaheim (USA), March 2005, OFM1
• S. Weisser, A. Benz, C. Boerner, Sebastian Ferber, Reinhold Ludwig, L. Raddatz, Hans-Georg Weber
  170 Gbit/s single-polarization transmission over 650 km SSMF with 130 km spans using RZ-DPSK,
  Proc. 30th Conf. Optical Fiber Communications (OFC 2005), Anaheim (CA,US), March 2005, OFF4
• C. Boerner, Sebastian Ferber, Reinhold Ludwig, V. Marembert, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  320 Gbit/s clock recovery with electro-optical PLL using a bidirectionally operated electroabsorption modulator as phase comparator,
  Proc. 30th Conf. Optical Fiber Communications (OFC 2005), Anaheim (CA,US), March 2005, OtuO3
• H.J. Thiele, Ronald Freund, Lutz Molle
  40-Gb/s S-Band WDM Transmission Over Installed Fiber Links Using Erbium-Based Fiber Amplifiers,
  Proc. Optical Fiber Communication Conference (OFC 2005), Anaheim (USA), March 2005, OTuH1
• H. Buchta, E. Patzak
  Impact of modulation formats and SOA chirp on the thooughput of SOA based OBS nodes,
  Proc. Optical Fiber Communication Conference (OFC 2005), Anaheim,CA,(USA), March 2005
• M. Malach, Ronald Freund, Lutz Molle, Klaus Petermann, H.J. Thiele
  Unterdrückung der XPM in 10 Gb/s WDM Übertragungssystemen,
  Workshop der ITG Fachgruppe 5.3.1, Dortmund, Germany, February 2005

2004

• Carsten Schmidt-Langhorst, J. Berger, C. Boerner, H.-J. Ehrke, Sebastian Ferber, E. Hilliger, M. Kroh, Reinhold Ludwig, V. Marembert, Colja Schubert, Hans-Georg Weber
  Ultrafast technologies in 160 Gbit/s transmission systems,
  Proc. Information Technologies and Communications (ITCOM 2004), Pennsylvania (US), pp. 249-259, October 2004, Invited Paper, invited,invited paper.
• V. Marembert, C. Boerner, Sebastian Ferber, F. Futami, M. Kroh, Reinhold Ludwig, Ryo Okabe, Carsten Schmidt-Langhorst, Colja Schubert, K. Schulze, Shigeki Watanabe, Hans-Georg Weber
  Single-channel 640 Gbit/s DPSK Transmission over a 160 km Fibre Link ,
  Proc. 30th Europ. Conf. on Optical Communication (ECOC 2004), Stockholm (Sweden), September 2004, Th4.4.2, postdeadline,paper Th4.4.2,on CD-ROM,postdeadline paper.
• Christof Börner, Sebastian Ferber, F. Futami, Reinhold Ludwig, Ryo Okabe, Carsten Schmidt-Langhorst, Colja Schubert, Shigeki Watanabe, Hans-Georg Weber
  160 Gbit/s clock recovery in a 3R-regenerating wavelength converter,
  Proc. 30th Europ. Conf. on Optical Communication (ECOC 2004), Stockholm, September 2004, We3.5.7, D249D249Stockholm (SE),paper We3.5.7.,on CD-ROM.
• M. Kroh, J. Berger, Christof Börner, Reinhold Ludwig, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber, Carl-M. Weinert
  Semiconductor mode-locked laser pulse source for 320 and 640 Gb/s RZ data transmitter,
  Proc. 30th Europ. Conf. on Optical Communication (ECOC 2004),Stockholm (SE), Stockholm (Sweden) , September 2004, We3.5.7
• Reinhold Ludwig, J. Berger, Christof Börner, Sebastian Ferber, E. Hilliger, M. Kroh, V. Marembert, C. Schmidt, Colja Schubert, Hans-Georg Weber
  160 Gb/s DPSK transmission system with high long-term stability,
  Proc. OptoElectronics and Communications Conf. (OECC 2004), Yokohama (J), pp. 472-473, July 2004, 14C4-2, paper 14C4-2,pp. 472 - 473,best paper award.
• T. Tekin, M. Schlak, Ch. Schmidt, Colja Schubert
  The influence of gain and phase dynamics in the integrated GS-SOA on the switching performance of the monolithically integrated GS-MZI,
  Techn. Dig. of Integrated Photonics Research (IPR 2004), San Francisco, June 2004, IWC4
• Sebastian Ferber, C. Boerner, F. Futami, Kai Habel, Reinhold Ludwig, Lutz Molle, Michael Rohde, Carsten Schmidt-Langhorst, Shigeki Watanabe, Hans-Georg Weber
  160 Gb/s regenerating conversion node,
  Proc. 29th Optical Fiber Communication Conference (OFC 2004), Los Angeles (US), March 2004, ThT2
• S. Kieckbusch, E. Brinkmeyer, A. Ehrhardt, Sebastian Ferber, Reinhold Ludwig, H. Rosenfeldt, Hans-Georg Weber
  Adaptive PMD compensator in 160 Gb/s DPSK transmission over installed fiber,
  Proc. 29th Conf. Optical Fiber Communications (OFC 2004), Los Angeles,CA,(USA), February 2004, PDP 31, postdeadline,post-deadline paper PDP 31.
• Reinhold Ludwig, C. Boerner, Sebastian Ferber, E. Hilliger, M. Kroh, V. Marembert, Carsten Schmidt-Langhorst, Colja Schubert, Hans-Georg Weber
  160 Gbit/s DPSK-transmission - technologies and system impact,
  Proc. 30th Europ. Conf. on Optical Communication (ECOC 2004), Stockholm (Sweden), January 2004, Tu1.1.3, Invited Paper, invited,Stockholm (Sweden),Tu1.1.3,invited paper.

2003

• Colja Schubert, G. Guekos, L. Schares, C. Schmidt, Hans-Georg Weber
  Phase dynamics in gain-transparent semiconductor optical amplifiers,
  Proc. 29th Europ. Conf. on Optical Communication (ECOC 2003), Rimini,Italy, pp. 1062-1063, September 2003, Th3.5.2, vol. 4,paper Th3.5.2,pp. 1062-1063.
• Andreas Beling, Heinz-Gunter Bach, J. Berger, Th. Eckhardt, G. Jacumeit, M. Kroh, Reinhard Kunkel, G.G. Mekonnen
  Fully Packaged INP-Based Photodetector for 80/85 GBit/s RZ Ssystems,
  Proc. 29th Europ. Conf. on Optical Communication (ECOC 2003), Rimini, Italy, pp. 82-83, September 2003, Th4.4.4, vol. 6,PD-paper Th4.4.4,pp. 82-83.
• M. Leich, J. Berger, W. Bronner, E. Dietrich, V. Hurm, K. Köhler, A. Leuther, R. Lösch, J. Rosenzweig, M. Schlechtweg, J. Sohn, H. Walcher
  Hybrid integrated optical receivers for high-speed data transmission,
  Proc. ITCom 2003, Orlando,(Florida,US), pp. 422-433, September 2003, Invited Paper, invited,vol. 5246, pp. 422-433,invited paper.
• B. Huettl, S. Fidorra, F. Foczianowski, H. Heidrich, G. Jacumeit, Ronald Kaiser, M. Kroh, Wolfgang Rehbein, R. Stenzel, H. Stolpe
  Monolithic Mode-Locked Laser on GaInAsP/InP for 160 Gb/s TDM Applications,
  Proc. 28th Optical Fiber Communication Conference (OFC 2003),Technical Digest, Atlanta (GA,US), pp. 675-676, March 2003
• M. Kroh, L. Kueller, Reinhold Ludwig, C. Schmidt, Hans-Georg Weber
  Investigations on phase noise in a semiconductor mode-locked laser,
  Proc. 28th Optical Fiber Communication Conference (OFC 2003), Atlanta (US), pp. 673-674, March 2003

2001

• E. Hilliger, J. Berger, Hans-Georg Weber, K. Yvind, P.M.W. Skovgaard, J. Hanberg
  The cascaded amplifier and saturable absorber (CASA) all-optical switch,
  Photonics in Switching 2001, Monterey,CA,USA, June 2001
• T. Tekin, H. Ehlers, M. Schlak, J. Berger, Colja Schubert, Björn-Thorsten Maul, R. Ziegler
  All-optical demultiplexing performance of monolithically integrated GS-MZI module,
  Intern. Workshop on Optical MEMS and Integrated Optics,Universität Dortmund, Dortmund,Germany, June 2001, 11-12 June 2001
• J. Berger, D. Breuer, U. Feiste, B. Konrad, Reinhold Ludwig, Klaus Petermann, Hans-Georg Weber, Carl-M. Weinert
  Optical TDM-Transmission Systems for Channel Rates of 40 Gbit/s and above,
  In: "ICTON´ 2001,3rd International Conference on Transparent Optical Net-Works,Conference Proceedings, Krakau,Polen, IEEE, June 2001, Invited Paper, invited,Krakau/Polen". IEEE,Piscataway NJ (Hg.). June 18-21,2-5,2001.
• L.K. Oxenløwe, Colja Schubert, C. Schmidt, E. Hilliger, J. Berger, U. Feiste, Reinhold Ludwig, Hans-Georg Weber
  Optical Clock Recovery Employing an Optical PLL Using Cross-Phase Modulation in a Sagnac-Interferometer,
  Conf. on Lasers and Electro-Optics (CLEO) Tech. Dig., Baltimore,USA, May 2001, CThU2, 6-11 May 2001,paper CThU2.
• Hans-Georg Weber, Reinhold Ludwig, U. Feiste, C. Schmidt, E. Hilliger, Colja Schubert, J. Berger, M. Kroh, T. Yamamoto
  Optical Signal Processing for High Speed Communication Systems,
  Invited paper,10th European Conference on Integrated Optics (ECIO 2001), Paderborn, pp. 147-152, April 2001, Invited Paper, invited,,4.4.01-6.4.01 Paderborn,147-152,2001
• E. Pawlowski, G.L. Yurista, L. Küller, Reinhold Ludwig, A.A. Friesen, Hans-Georg Weber
  Tunable Grating-Waveguide Structure Filter: Design,Fabrication and Application,
  10th European Conference on Integrated Optics (ECIO), Paderborn, April 2001, 4.4.01-6.4.01 Paderborn,2001
• Carl-M. Weinert, C. Schmidt, Hans-Georg Weber
  Application of asynchronous amplitude histograms for performance monitoring of RZ signals,
  Proc. 26th Optical Fiber Commun.,March 17-22 2001, Anaheim,CA,(USA), March 2001, WDD41, March 17-22 2001,paper WDD41

2000

• Reinhold Ludwig, U. Feiste, S. Diez, Colja Schubert, C. Schmidt, H.-J. Ehrke, Hans-Georg Weber
  Unrepeatered 160 Gbit/s RZ single channel transmission over 160 km of standard fiber at 1.55 µm with hybrid MZI optical DEMUX.,
  Proc. 26th Europ. Conf. Opt. Commun., Munich,Germany, September 2000, 6.1.3
• Reinhold Ludwig, U. Feiste, S. Diez, Colja Schubert, C. Schmidt, Hans-Georg Weber
  Towards the All-Optical 3R Regenerator: Present Status and Challenges,
  Techn. Dig. of Optoelectronics and Communications Conference (OECC 2000),Makuhari Messe, Japan, July 2000
• U. Feiste, Reinhold Ludwig, S. Diez, C. Schmidt, H.-J. Ehrke, Hans-Georg Weber, F. Küppers
  Unrepeatered 80 Gbit/s RZ single channel transmission over 160 km of standard fiber at 1.55 µm with a large wavelength tolerance,
  Proc. 25th Optical Fiber Commun., Baltimore (MD),USA, March 2000, TuD5, March 7-10 2000,paper TuD5.
• G. Toptchiyski, Klaus Petermann, S. Diez, E. Hilliger, C. Schmidt, Reinhold Ludwig, Hans-Georg Weber
  Evaluation of switching windows for fast optically-controlled SOA switches,
  Proc. 25th Optical Fiber Commun.2000, Baltimore (MD),USA, March 2000, ThF4, paper ThF4,March 7-10 2000.

2024

• Guillermo von Hünefeld, Enes Seker, Rijil Thomas, Stephan Suckow, Gregor Ronniger, Mahdi Kaveh, Pooyan Safari, Isaac Sackey, David Stahl, Colja Schubert, Johannes Fischer, Ronald Freund, Max Lemme
  Robust Fabrication of Photonic Neuromorphic Reservoir for Modulation Format Identification,
  European Conference on Intgrated Optics- ECIO 2024, Aachen, June 2024, Talk

2023

• Jan Krause
  Quantum key distribution - Systems & PICs,
  PolyChrome Workshop 2023, Berlin, November 2023, Talk
• Jan Krause
  A real-time experimental QKD platform for quantum-secure telecom infrastructures,
  BOS.QT Workshop, Berlin, October 2023, Talk
• Jan Krause
  34 h continuous QKD operation over 1.7 km free-space + fiber hybrid link during day and night,
  QCrypt 2023, Maryland, USA, August 2023, Talk
• Sarah Cwalina, Christoph Kottke, Norman Laske
  Coherent LiDAR prototype based on 2D MEMS mirror scanning,
  OFC 2023, San Diego, USA, March 2023, Talk
• Ruben S. Luis, Giammarco Di Sciullo, Georg Rademacher, Benjamin Puttnam, Andrea Marotta, Robert Emmerich, Nicolas Braig-Christophersen, Ralf Stolte, Fabio Graziosi, A. Mecozzi, Colja Schubert, Tetsuya Hayashi, Takuji Nagashima, Cristian Antonelli, Hideaki Furukawa
  Colorless and Directionless ROADM for Meshed Coupled-Core Multicore Fiber Networks,
  OFC 2023, San Diego, USA, March 2023, arXiv: https://ieeexplore.ieee.org/abstract/document/10116591/authors#authors, Talk
• Alberto Gatto, Paola Parolari, Ruben S. Luis, Georg Rademacher, Benjamin Puttnam, Robert Emmerich, Colja Schubert, Giuseppe Ferri, F. Achten, Pierre Sillard, Paolo Martelli, Giammarco Di Sciullo, Fabio Graziosi, Andrea Marotta, A. Mecozzi, Cristian Antonelli, Pierpaolo Boffi
  Partial MIMO-based Mode Division Multiplexing Transmission over the First Field-Deployed 15-Mode Fiber in Metro Scenario,
  Proc. Optical Fiber Communications Conference (OFC), San Diego, USA, March 2023, Talk
• Paola Parolari, Alberto Gatto, Ruben S. Luis, Georg Rademacher, Benjamin Puttnam, Robert Emmerich, Colja Schubert, Giuseppe Ferri, F. Achten, Pierre Sillard, Paolo Martelli, Giammarco Di Sciullo, Fabio Graziosi, Andrea Marotta, A. Mecozzi, Cristian Antonelli, Pierpaolo Boffi
  Demonstration of Multi-Hop Mode-Group Routing in a Field-Deployed Multi-Mode Fiber Network,
  Proc. Optical Fiber Communications Conference (OFC), San Diego, USA, March 2023, Talk
• Milan Deumer, Oliver Stiewe, Simon Nellen, Robert Kohlhaas, Colja Schubert, Robert Elschner, Ronald Freund, Martin Schell
  Purely Photonic Wireless Link at 120 GHz Carrier Frequency Enabled by Heterodyne Detection with a Photoconductive Antenna,
  PW 2023, San Francisco, USA, January 2023, Talk
• Sarah Cwalina, Christoph Kottke, Norman Laske, Volker Jungnickel, Ronald Freund
  Coherent LiDAR with 2D quasi-static MEMS mirror scanning,
  SPIE OPTO, 2023, San Francisco, California, United States, San Francisco, January 2023, Invited Talk
• Guillermo von Hünefeld, Gregor Ronniger, Enes Seker, Rijil Thomas, Pooyan Safari, Isaac Sackey, Md Mahasin Khan, Stephan Suckow, Max Lemme, David Stahl, Colja Schubert, Johannes Fischer, Ronald Freund
  Experimental Demonstration of Optical Modulation Format Identification Using SOI-based Photonic Reservoir,
  ECOC 2023, San Diego, USA, 2023, Talk

2022

• Carsten Schmidt-Langhorst, Johannes Pfeiffer, Robert Elschner, Robert Emmerich, Fabian Chowanek, In-Ho Baek, Robert F. H. Fischer, Colja Schubert
   Experimental Investigation of Information Bit Scrambling for Physical-Layer Security in Coherent Fiber-Optic Systems,
  23rd ITG Symposium on Photonic Networks, Berlin, September 2022, arXiv: https://ieeexplore.ieee.org/document/9861853, Talk
• Nino Walenta
  On the deployment of QKD systems with single-photon detectors,
  QR.X Workshop on Implementations of fiber testbeds for quantum communication, , Berlin, Germany, September 2022, Talk
• Jan Krause
  Quantum key distribution systems for future-proof information security in commu- nication networks,
  BMBF Quantum Futur Akademie, Berlin, August 2022, Talk
• Jan Krause
  Real-Time QKD Platform for Quantum-Secure Telecom Infrastructures,
  Fraunhofer Quantum Doc Forum 2022, Suhl, July 2022, Talk
• Nino Walenta
  Aktuelle Entwicklungen zum Ausbau quantensicherer Breitband-Öko-systeme für Behördenkommunikation und kritische Infrastrukturen,
  16. ITG Fachkonferenz "Breitbandversorgung in Deutschland", Berlin, Germany, June 2022, Talk

2021

• Sreelal Maravanchery Mana, Kerolos Gabra Kamel Gabra, Sepideh Mohammadi Kouhini, Peter Hellwig, Jonas Hilt, Volker Jungnickel
  An Efficient Multi-Link Channel Model for LiFi,
  September 2021, arXiv: https://www.researchgate.net/publication/354355011_An_Efficient_Multi-Link_Channel_Model_for_LiFi, Talk
• Robert Emmerich, Matheus Ribeiro Sena, Mustafa Sezer Erkilinc, Isaac Sackey, Robert Elschner, Carsten Schmidt-Langhorst, Colja Schubert, Ronald Freund
  S-Band Transmission with Off-the-Shelf C-Band Components Enabled by Nonlinear Predistortion based on Coherent System Identification,
  Photonic Networks; 22th ITG-Symposium, Online, August 2021, arXiv: https://ieeexplore.ieee.org/document/9472219, Talk
• Robert Emmerich, Matheus Ribeiro Sena, Robert Elschner, Carsten Schmidt-Langhorst, Isaac Sackey, Colja Schubert, Ronald Freund
  Enabling S-C-L-Band Systems with Standard C-Band Modulator and Coherent Receiver using Nonlinear Predistortion,
  Proc. Optical Fiber Communication Conference (OFC 2021),San Francisco(USA), Online, August 2021, arXiv: https://ieeexplore.ieee.org/abstract/document/9489930, Talk
• Sepideh Mohammadi Kouhini, Peter Hellwig, Dominic Schulz, Ronald Freund, Volker Jungnickel
  Benefits of MIMO Mode Switching, Angular Diversity and Multiuser Multiplexing for LiFi ,
  2021 Optical Fiber Communications Conference and Exhibition (OFC), August 2021, arXiv: https://ieeexplore.ieee.org/document/9489889, Talk
• Sepideh Mohammadi Kouhini, Sepideh Mohammadi Kouhini, Sreelal Maravanchery Mana, Ronald Freund, Volker Jungnickel, Carina Ribeiro Barbio Corrêa, Eduward Tangdiongga, Thiago Cunha, Xiong Deng, Jean-Paul Linnartz
  Distributed MIMO Experiment Using LiFi Over Plastic Optical Fiber,
  2020 IEEE Globecom Workshops (GC Wkshps, August 2021, Talk
• Mohammad Behnam Shariati, Pooyan Safari, Geronimo Bergk, Felix Immanuel Oertel, Johannes Fischer
  Inter-Operator Machine Learning Model Trading over Acumos AI Federated Marketplace,
  2021 Optical Fiber Communications Conference and Exhibition (OFC), August 2021, arXiv: https://ieeexplore.ieee.org/abstract/document/9489395/authors#authors, Talk
• Pooyan Safari, Mohammad Behnam Shariati, Geronimo Bergk, Johannes Fischer
  Deep Convolutional Neural Network for Network-wide QoT Estimation,
  2021 Optical Fiber Communications Conference and Exhibition (OFC), August 2021, arXiv: https://ieeexplore.ieee.org/abstract/document/9489926/authors, Talk
• Mohammad Behnam Shariati, J.J. Pedreno-Manresa, Annika Dochhan, A. S. Muqaddas, R. Casellas, O. González de Dios, L. L. Canto, Bodo Lent, J. E. Lopez de Vergara, S. López-Buedo, F.J. Moreno, P. Pavón, Luis Velasco, S. Patri, A. Giorgetti, F. Cugini, A. Sgambelluri, R. Nejabati, Dimitra Simeonidou, Ralf-Peter Braun, A. Autenrieth, Jörg-Peter Elbers, Johannes Fischer
  A Latency-Aware Real-Time Video Surveillance Demo: Network Slicing for Improving Public Safety,
  August 2021, arXiv: https://ieeexplore.ieee.org/abstract/document/9489743/authors#authors, Talk
• Dominic Schulz, Julian Hohmann, Peter Hellwig, Christoph Kottke, Ronald Freund, Volker Jungnickel, Ralf-Peter Braun, Frank Geilhardt
  All-Indoor Optical Customer Premises Equipment for Fixed Wireless Access,
  OFC 2021, July 2021, arXiv: https://arxiv.org/abs/2107.00999, Talk
• Sebastian Stern, Felix Frey, Masoud Barakatain, Johannes Fischer, Robert F. H. Fischer
  Concatenated Non-Binary Coding for 4D Constellations,
  Workshop der ITG-Fachgruppe 5.1.2 (Angewandte Informationstheorie), May 2021, Talk

2020

• Nino Walenta
  Towards a German Quantum Communication Infrastructure,
  Berlin Quantum Technology Symposium, Berlin, Deutschland, October 2020, Invited Talk
• Hossein B. Eldeeb, Murat Uysal, Sreelal Maravanchery Mana, Peter Hellwig, Jonas Hilt, Volker Jungnickel
  Channel Measurements and Raytracing for MIMO Light Communication at 200 MHz,
  IEEE Photonics Conference 2020, May 2020, Talk
• Felix Frey, Johannes Fischer, Robert Fischer
  Aliasing of the Frequency-Domain Kernel in Perturbation-Based End-to-End Channel Models,
  Workshop der ITG-Fachgruppe 5.3.1, February 2020, Talk
• Carlos Moises Castro Posada, Robert Elschner, Thomas Merkle, Colja Schubert, Ronald Freund
  Real-Time Demostration of a 100 Gb/s THz-Wireless Fiber Extender,
  ITG Fachtatung Photonische Netze 2020, Leipzig, 2020, Talk
• Carlos Moises Castro Posada, Robert Elschner, Thomas Merkle, Colja Schubert, Ronald Freund
  Long-Range High-Speed THz-Wireless Transmission in the 300 GHz Band,
  IWMTS 2020, 2020, Invited Talk
• Robert Emmerich, António Eira, Nelson Costa, Pablo Wilke Berenguer, Robert Elschner, Colja Schubert, Johannes Fischer, João Pedro, Ronald Freund
  Dual-Band Node Architectures for C+L-Band Capacity Upgrades in Optical Metro Transport Networks,
  Photonic Networks; 21th ITG-Symposium, Online, 2020, Talk
• Sreelal Maravanchery Mana, Hossein B. Eldeeb, Murat Uysal, Sreelal Maravanchery Mana, Peter Hellwig, Jonas Hilt, Volker Jungnickel
  Channel Modelling for Light Communications: Validation of Ray Tracing by Measurements,
  CSNDSP 2020, 2020, Talk
• Sreelal Maravanchery Mana, Sreelal Maravanchery Mana, Sepideh Mohammadi Kouhini, Peter Hellwig, Jonas Hilt, Pablo Wilke Berenguer, Volker Jungnickel
  Distributed MIMO Experiments for LiFi in a Conference Room,
  CSNDSP 2020, 2020, Talk
• Sepideh Mohammadi Kouhini
  Performance of Bidirectional LiFi  over Plastic Optical Fiber (POF) ,
  CSNDSP 2020, 2020, Talk
• Nino Walenta
  Towards a German Quantum Communication Infrastructure,
  Berlin Quantum Technology Symposium, Berlin, 2020, Talk
• Mohammad Behnam Shariati, Pooyan Safari, Johannes Fischer
  Applications of Distributed Learning for Optical Communication Networks,
  APC 2020, 2020, Invited Talk
• Johannes Pfeiffer, Carsten Schmidt-Langhorst, Robert Elschner, Felix Frey, Robert Emmerich, Colja Schubert, Robert F. H. Fischer
  Security Gap Investigation of Multilevel Coding in Coherent Fiber-Optical Systems,
  21st ITG Symposium Photonic Networks, 24-25 Nov 2020, Online, 2020, Talk
• Sebastian Stern, Masoud Barakatain, Felix Frey, Johannes Pfeiffer, Johannes Fischer, Robert F. H. Fischer
  Coded Modulation for Four-Dimensional Signal Constellations with Concatenated Non-Binary Forward Error Correction,
  ECOC 2020, 2020, Talk

2019

• Johannes Fischer, Bogdan-Mihai Andrus, Silviu Adrian Sasu, Mohit Chamania, Johannes K. Fischer, Stephan Rasp
  Zero-Touch Provisioning of Distributed Video Analytics in a Software-Defined Metro-Haul Network with P4 Processing,
  Proc. Optical Fiber Communication Conference (OFC 2019), San Diego (USA), 2019, Talk
• Mohammad Behnam Shariati, Kai Habel, Volker Jungnickel, Johannes Fischer, Ronald Freund
  Photonics-Supported 5G Test Facilities for Low Latency Applications,
  Proc. 21st International Conference on Transparent Optical Networks (ICTON), Angers, Frankreich, 2019, Talk
• Mohammad Behnam Shariati, Marc Ruiz, Jaume Comellas, Luis Velasco
  Feature-based Optical Spectrum Monitoring for Failure Detection and Identification,
  Proc. 21st International Conference on Transparent Optical Networks (ICTON), Angers, Frankreich, 2019, Invited Talk
• Annika Dochhan, Johannes Fischer, Bodo Lent, Achim Autenrieth, Mohammad Behnam Shariati, Pablo Wilke Berenguer, Jörg-Peter Elbers
  Metro-haul Project Vertical Service Demo: Video Surveillance Real-time Low-latency Object Tracking,
  OFC 2020, 2019, Invited Talk
• Farhad Arpanaei, Hamzeh Beyranvand, Nahid Ardalani, Ali Alavian, Mohammad Behnam Shariati
  Physical -Layer Aware Routing, Modulation Level and Resource Allocation of EONs over FM-MCFs,
  Proc. 45th European Conference on Optical Communication (ECOC), Dublin, Ireland, 2019, Talk
• Alessio Ferrari, Antonio Napoli, Nelson Costa, Johannes Fischer, João Pedro, Wladek Forysiak, Andre Richter, Erwan Pincemin, Vittorio Curri
  Multi-Band Optical Systems to Enable Ultra-High Speed Transmissions,
  Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2019, Invited Talk

2018

• Felix Frey, Johannes Fischer, Robert F. H. Fischer
  Probability Distributions of Nonlinear Distortions Obtained from the Sampled Nonlinear Transfer Function,
  Workshop der ITG-Fachgruppe 5.3.1, February 2018, Talk
• Dominic Schulz, Julian Hohmann, Jonas Hilt, Peter Hellwig, Volker Jungnickel
  Outdoor Performance Comparison of Optical Wireless and Millimeter Wave,
  ICT 2018, 2018, Talk
• Dominic Schulz, Julian Hohmann, Jonas Hilt, Peter Hellwig, Ronald Freund, Volker Jungnickel
  Measurement Based Correlation Analysis of a Hybrid Optical Wireless / 60 GHz Link,
  LiFi Congress 2018, 2018, Talk
• Dominic Schulz, Pablo Wilke Berenguer, Jonas Hilt, Peter Hellwig, Anagnostis Paraskevopoulos, Ronald Freund, Volker Jungnickel
  New Applications for Optical Wireless Communication,
  OPIC 2018, 2018, Invited Talk
• Dominic Schulz, Pablo Wilke Berenguer, Jonas Hilt, Peter Hellwig, Anagnostis Paraskevopoulos, Ronald Freund, Volker Jungnickel
  Use Cases for Optical Wireless Communication,
  OFC 2018, 2018, Talk

2014

• Volker Jungnickel, Jelena Vučić, Klaus-Dieter Langer
  High-speed Optical Wireless Communications Technologies,
  OFC 2014, San Francisco, CA, USA, March 2014, Th1F. 5, Invited Talk

2013

• Volker Jungnickel, Nicolas Perlot
  Optical free-space communications,
  World Telecommunication Congress (WTC), Berlin, Germany, June 2013, Invited Talk

2022

• Nino Walenta, Jan Krause, Jonas Hilt, Stefan Weide, Nicolas Perlot, Ronald Freund
  Quantum Communication Systems and Protocols,
  In: Quantum Communication Systems and Protocols, Fraunhofer Verlag, Stuttgart, pp. 210-224, September 2022, Book Chapter

2020

• O. Benson, Tim Kroh, Chris Müller, Jasper Rödiger, Nicolas Perlot, Ronald Freund
  Quantum Networks Based on Single Photons,
  In: Semiconductor Nanophotonics, Springer Nature Switzerland AG, Switzerland, ISBN: 978-3-030-35655-2, vol. 194, pp. 361–390, March 2020, doi: 10.1007/978-3-030-35656-9_9, Book Chapter

2019

• Christian Schmidt
  Interleaving Concepts for Digital-to-Analog Converters,
  Springer Vieweg, Wiesbaden, ISBN: 978-3-658-27264-7, ed. 1, September 2019, doi: 10.1007/978-3-658-27264-7
• Ronald Freund, Thomas Haustein, Martin Kasparick, Kim Mahler, Julius Schulz-Zander, Lars Thiele, Thomas Wiegand, Richard Weiler
  5G Data Transfer at Maximum Speed,
  In: Digital Transformation, Springer Vieweg, Berlin, Heidelberg, ISBN: 978-3-662-58133-9, p. 20, 2019, doi: 10.1007/978-3-662-58134-6_7, Book Chapter

2018

• Ronald Freund, Thomas Haustein, Martin Kasparick, Kim Mahler, Julius Schulz-Zander, Lars Thiele, Thomas Wiegand, Richard Weiler
  5G-Datentransport mit Höchstgeschwindigkeit,
  In: Digitalisierung, Fraunhofer-Forschungsfokus, Reimund Neugebauer, Springer Vieweg, 2018, Wiesbaden, ISBN: 978-3-662-55890-4, pp. 89-111, 2018, doi: 10.1007/978-3-662-55890-4, Book Chapter

2016

• Markus Nölle, Johannes Fischer, Colja Schubert
  Transmission in Elastic Optical Networks,
  In: Elastic Optical Networks, Springer International Publishing, Heidelberg, Germany, ISBN: 978-3-319-30173-0, pp. 83-116, 2016, doi: 10.1007/978-3-319-30174-7, Book Chapter

2012

• Péter Farkas, Michael Schlosser, Ronald Freund
  FTTX-PLAN: kostenoptimierte Planung von optischen Zugangsnetzen,
  Jahrbuch Lichtwellenleitertechnik, Germany, 2012

2010

• Malte Schellmann, Lars Thiele, Thomas Wirth, Thomas Haustein, Volker Jungnickel
  Resource Management in MIMO-OFDM systems,
  In: Orthogonal Frequency Division Multiple Access Fundamentals and Applications, Auerbach Publications 2010, Boca Raton, pp. 235–265, April 2010, Book Chapter

2009

• D.C. O´Brien, L. Zeng, H. Le-Minh, G.E. Faulkner, O. Bouchet, S. Randel, J.W. Walewski, J.A. R. Borges, Klaus-Dieter Langer, J. Grubor, K. Lee, E.T. Won
  Visible Light Communications,
  In: In R. Kraemer, M.D. Katz (Eds.): Short-range wireless communications, Wiley & Sons Ltd., Hoboken, New Jersey, USA, pp. 329-342, July 2009, Book Chapter

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