Experimental Study on OSNR Requirements for Spectrum-Flexible Optical Networks [Invited]. - Robert Borkowski; Fotini Karinou; Marianna Angelou; Valeria Arlunno; Darko Zibar; Dimitrios Klonidis; Neil Guerrero González; Antonio Caballero 003; Ioannis Tomkos; Idelfonso Tafur Monroy (JOCN, 2012)

Optical modulation format recognition in stokes space for digital coherent receivers. - Robert Borkowski; Darko Zibar; Antonio Caballero 003; Valeria Arlunno; Idelfonso Tafur Monroy (OFC/NFOEC, 2013)

Coherent 40 Gb/s SP-16QAM and 80 Gb/s PDM-16QAM in an optimal supercomputer optical switch fabric. - Fotini Karinou; Robert Borkowski; Darko Zibar; Ioannis Roudas; Idelfonso Tafur Monroy (OFC/NFOEC, 2013)

Demonstration of EDFA cognitive gain control via GMPLS for mixed modulation formats in heterogeneous optical networks. - Juliano Oliveira; Antonio Caballero 003; Eduardo Magalhães; Uiara Moura; Robert Borkowski; Giovanni Curiel; Alberto T. Hirata; Luis Henrique Hecker de Carvalho; Edson Porto da Silva; Darko Zibar; Jose Maranhao; Idelfonso Tafur Monroy; et al. (OFC/NFOEC, 2013)

Robust cognitive-GN BER estimator for dynamic WDM networks. - Robert Borkowski; Antonio Caballero 003; Valeria Arlunno; Darko Zibar; Idelfonso Tafur Monroy (ECOC, 2014)

DSP-based focusing over optical fiber using time reversal. - Molly Piels; Edson Porto da Silva; José Estarán; Robert Borkowski; Darko Zibar; Idelfonso Tafur Monroy (ECOC, 2014)

Applications of expectation maximization algorithm for coherent optical communication. - Darko Zibar; Ole Winther; Robert Borkowski; Idelfonso Tafur Monroy; Luis Henrique Hecker de Carvalho; Júlio Oliveira (EUSIPCO, 2014)

Advanced modulation formats in cognitive optical networks: EU project CHRON demonstration. - Robert Borkowski; Antonio Caballero 003; Dimitrios Klonidis; Christoforos Kachris; Antonio Francescon; Ignacio de Miguel; Ramón J. Durán; Darko Zibar; Ioannis Tomkos; Idelfonso Tafur Monroy (OFC, 2014)

Experimental demonstration of a cognitive optical network for reduction of restoration time. - Christoforos Kachris; Dimitrios Klonidis; Antonio Francescon; Domenico Siracusa; Elio Salvadori; Natalia Fernández; Tamara Jiménez; Ramón J. Durán; Ignacio de Miguel; Juan Carlos Aguado; Rubén M. Lorenzo; Robert Borkowski; et al. (OFC, 2014)

Anatomy of a Digital Coherent Receiver. - Robert Borkowski; Darko Zibar; Idelfonso Tafur Monroy (IEICE Trans. Commun., 2014)

Turbo Equalization Techniques Toward Robust PDM 16-QAM Optical Fiber Transmission. - Valeria Arlunno; Antonio Caballero 003; Robert Borkowski; Silvia Saldaña Cercós; Darko Zibar; Knud J. Larsen; Idelfonso Tafur Monroy (JOCN, 2014)

Cognitive Optical Network Testbed: EU Project CHRON [Invited]. - Robert Borkowski; Ramón J. Durán; Christoforos Kachris; Domenico Siracusa; Antonio Caballero 003; Natalia Fernández; Dimitrios Klonidis; Antonio Francescon; Tamara Jiménez; Juan Carlos Aguado; Ignacio de Miguel; Elio Salvadori; et al. (JOCN, 2015)

TWDM PON Preamble Engineering for Burst-Mode Frequency Drift Reduction Through Mitigation of a DFB Turn-On Blue Shift. - Robert Borkowski; Wolfgang Pöhlmann; Thomas Pfeiffer 001 (ECOC, 2017)

Real-time demonstration of 28 Gbit/s electrical duobinary TDM-PON extension using remote nodes. - René Bonk; Robert Borkowski; Wolfgang Pöhlmann; Joris Van Kerrebrouck; C. Chase; R. Lucas; Timothy De Keulenaer; Johan Bauwelinck; Doutje T. van Veen; Vincent Houtsma; Xin Yin; Thomas Pfeiffer 001 (OFC, 2017)

Real-time burst-mode operation of an integrated SOA-PIN/TIA receiver for 25 Gbit/s/λ and faster T(W)DM-PON. - Robert Borkowski; Wolfgang Pöhlmann; Romain Brenot; René Bonk; Philippe Angelini; Christophe Caillaud; Mohand Achouche; Fabrice Blache; Michel Goix; Karim Mekhazni; Bernadette Duval; Jean-Yves Dupuy; et al. (OFC, 2017)

Quasi frequency drift suppression for burst mode operation in low-cost thermally-tuned TWDM-PON. - Helene Debregeas; Romain Brenot; Jean-Guy Provost; S. Barbet; Wolfgang Pöhlmann; Robert Borkowski; René Bonk; Thomas Pfeiffer 001 (OFC, 2017)

In-Service Pre-Ranging for Upstream ONU Activation in Low-Latency TDM-PON Using Downstream Data Only. - Robert Borkowski; René Bonk; Thomas Pfeiffer 001 (ECOC, 2018)

Evaluation of Heater Implementations for Wavelength Drift Mitigation in Directly Modulated Lasers Under Burst Mode Operation. - Harald Schmuck; Robert Borkowski; Helene Debregeas; Thomas Pfeiffer 001; Rene Bonk (ECOC, 2018)

Burst-Mode Actively-Filtered Receiver for TDM-PON Enabling Extended Reach and Improved Sensitivity. - Robert Borkowski; Wolfgang Pöhlmann; Rene Bonk; Thomas Pfeiffer 001 (OFC, 2018)

Components for High Speed 5G Access. - Helene Debregeas; Robert Borkowski; René Bonk; Thomas Pfeiffer 001; Francois Lelarge; Mohand Achouche (OFC, 2018)

Demonstration of ONU Activation for In-Service TDM-PON Allowing Uninterrupted Low-Latency Transport Links. - Rene Bonk; Robert Borkowski; Michael Straub; Harald Schmuck; Thomas Pfeiffer 001 (OFC, 2019)

Single-Wavelength Symmetric 50 Gbit/s Equalization-Free NRZ IM/DD PON with up to 33 dB Loss Budget and Fiber Transmission over >40 km. - Robert Borkowski; Harald Schmuck; Giancarlo Cerulo; Helene Debregeas; René Bonk (OFC, 2019)

Digital Upstream Crosstalk Cancellation for Future (T)WDM-PON Systems. - Yannick Lefevre; Robert Borkowski; Jochen Maes; Thomas Pfeiffer 001 (JOCN, 2019)

World's First Field Trial of 100 Gbit/s Flexible PON (FLCS-PON). - Robert Borkowski; Michael Straub; Yanni Ou; Yannick Lefevre; Zeljko Jelic; Wouter Lanneer; Noriaki Kaneda; Amitkumar Mahadevan; Volker Hückstädt; Dora van Veen; Vincent Houtsma; Werner Coomans; et al. (ECOC, 2020)

Multi Format High Speed linear Preamplified Receiver Operating at 100 Gbit/s NRZ-OOK. - Christophe Caillaud; Robert Borkowski; Fabrice Blache; Filipe Jorge; Michel Goix; Bernadette Duval; Rene Bonk; Franck Mallecot (ECOC, 2020)

120 Gbaud IM/DD PAM-4 Transmission over 1.5 km SMF Using a Single CMOS DAC with <20 GHz Analog Bandwidth. - Qian Hu; Karsten Schuh; Robert Borkowski; Fred Buchali; Henning Bülow (ECOC, 2020)

The Impact of Transmitter Chirp Parameter on the Power Penalty and Design of 50 Gbit/s TDM-PON. - Robert Borkowski; Harald Schmuck; Giancarlo Cerulo; Jean-Guy Provost; Vincent Houtsma; Dora van Veen; Ed Harstead; Franck Mallecot; René Bonk (OFC, 2020)

Novel Optical Field Reconstruction for IM/DD with Receiver Bandwidth Well below Full Optical Signal Bandwidth. - Qian Hu; Robert Borkowski; Mathieu Chagnon; Karsten Schuh; Fred Buchali; Henning Bülow (OFC, 2020)

From 25 Gb/s to 50 Gb/s TDM PON: transceiver architectures, their performance, standardization aspects, and cost modeling. - Ed Harstead; René Bonk; Sheldon Walklin; Dora van Veen; Vincent Houtsma; Noriaki Kaneda; Amitkumar Mahadevan; Robert Borkowski (JOCN, 2020)

Operator Trial of 100 Gbit/s FLCS-PON Prototype with Probabilistic Shaping and Soft-Input FEC. - Robert Borkowski; Yannick Lefevre; Michael Straub; Zeljko Jelic; Amitkumar Mahadevan; Noriaki Kaneda; Yanni Ou; Wouter Lanneer; Ralph Kaptur; Björn Czerwinski; Bruno Cornaglia; Dora van Veen; et al. (ECOC, 2021)

Plasmonic-MZM-based Short-Reach Transmission up to 10 km Supporting >304 GBd Polybinary or 432 Gbit/s PAM-8 Signaling. - Qian Hu; Robert Borkowski; Yannick Lefevre; Fred Buchali; René Bonk; Karsten Schuh; Eva de Leo; Patrick Habegger; Marcel Destraz; Nino Del Medico; Hamit Duran; Valentino Tedaldi; et al. (ECOC, 2021)

Experimental Evaluation of PAM and Polybinary Modulation for Intra-DCI Optical Lanes with up to 300 Gbit/s Net Bitrates. - Robert Borkowski; Qian Hu; Yannick Lefevre; Fred Buchali; René Bonk; Karsten Schuh; Junho Cho; Juerg Leuthold; Wolfgang Heni; Benedikt Baeuerle; Claudia Hoessbacher (OFC, 2022)

Perspectives on and the road towards 100 Gb/s TDM PON with intensity-modulation and direct-detection. - Rene Bonk; Ed Harstead; Robert Borkowski; Vincent Houtsma; Yannick Lefevre; Amitkumar Mahadevan; Dora van Veen; Michiel Verplaetse; Sheldon Walklin (JOCN, 2022)

FLCS-PON - an opportunistic 100 Gbit/s flexible PON prototype with probabilistic shaping and soft-input FEC: operator trial and ODN case studies. - Robert Borkowski; Yannick Lefevre; Amitkumar Mahadevan; Doutje T. van Veen; Michael Straub; Ralph Kaptur; Björn Czerwinski; Bruno Cornaglia; Vincent Houtsma; Werner Coomans; René Bonk; Jochen Maes (JOCN, 2022)

Interoperability and Experimental Evaluation of TDEC(Q) Testing for 50 and 100G PONs. - Dora van Veen; Robert Borkowski; Amitkumar Mahadevan; Vincent Houtsma (OFC, 2023)

200G IM/DD Time-and-Polarization-Division-Multiplexed PON with >29dB Power Budget Using Boosted EML and APDs. - Robert Borkowski; Kovendhan Vijayan; Vincent Houtsma; Qian Hu; Amitkumar Mahadevan; Patrick Iannone; Doutje T. van Veen (OFC, 2024)

467 Gbit/s Net Bitrate IM/DD Transmission Using 176 GBd PAM-8 Enabled by SiGe AMUX with Excellent Linearity. - Qian Hu; Tobias Tannert; Markus Grözing; Gregory Raybon; Robert Borkowski; Fred Buchali; Xi Chen 018; Patrick Iannone; Georg Rademacher; Roland Ryf (OFC, 2024)

400 Gbit/s Dual-Wavelength and Dual-Polarization IM-DD TDM-PON with 34 dB Power Budget. - Doutje T. van Veen; Robert Borkowski; Kovendhan Vijayan; Amitkumar Mahadevan; Vincent Houtsma (OFC, 2024)

ML approaches for OTDR diagnoses in passive optical networks - event detection and classification: ways for ODN branch assignment. - Michael Straub; Johannes Reber; Tarek Saier; Robert Borkowski; Shi Li; Dmitry Khomchenko; André Richter; Michael Färber 001; Tobias Käfer; René Bonk (J. Opt. Commun. Netw., 2024)

Benefits of flexibility in current and future IM-DD based TDM-PON [Invited]. - Doutje T. van Veen; Amitkumar Mahadevan; Michael Straub; Robert Borkowski; Rene Bonk; Vincent Houtsma (J. Opt. Commun. Netw., 2024)

Burst-Mode Coherent PON Upstream with Rapid Wavelength Measurement and Fast Local Oscillator Tuning Over 20 nm. - Robert Borkowski; Brian Stern; Kovendhan Vijayan; Qian Hu; Kwangwoong Kim; Bob Farah; Ed Sutter; Vincent Houtsma; Doutje T. van Veen; Nicolas K. Fontaine (OFC, 2025)

Operator Trial of Quadruple PON Coexistence with 100G-PON, 50G-PON, 25GS-PON and XGS-PON. - Robert Borkowski; Kovendhan Vijayan; Suresh Chandrasekaran; John Valdez; Erwin Wardojo; Srimadhaven Thirumurthy; Vincent Houtsma; Christoph Füllner; Dora van Veen; Michael Straub; René Bonk; Chris Edwards; et al. (OFC, 2025)

Novel ML-Assisted Optical Equalization Photonic Integrated Circuit for High-Speed IM/DD Systems. - George Brestas; Giannis Kanakis; Maria Spyropoulou; Christophe Caillaud; Giancarlo Cerulo; Mokhtar Korti; Vladyslav Vakarin; Christoph Füllner; Robert Borkowski; Alessandro Aimone; Rene Bonk; Hercules Avramopoulos (OFC, 2025)

First 100G NRZ-OOK PON Demonstration with >31 dB Loss Budget and Coexistence Study over Field-Deployed Fiber. - Christoph Füllner; Dora van Veen; Michael Straub; Michiel Verplaetse; Robert Borkowski; Wouter Lanneer; Yannick Lefevre; Vincent Houtsma; René Bonk; Peter Desmet; Colin Wu; Jochen Maes (OFC, 2025)

Blind Channel Equalizer-Based Suppression of Interference from Non-Transmitting ONUs in Upstream Coherent PON. - Wouter Lanneer; Kovendhan Vijayan; Robbe Van Rompaey; Robert Borkowski; Laurens Breyne (OFC, 2025)

Measuring Broadly Spanning Lasers at Nanosecond Speed with a Silicon Photonic Wavemeter. - Brian Stern; Kovendhan Vijayan; Robert Borkowski; Bob Farah; Ed Sutter; Kwangwoong Kim (OFC, 2025)

Polarization Based Fiber Optic Sensing and Monitoring in Real-time IM-DD Based PON. - Doutje T. van Veen; Kovendhan Vijayan; Robert Borkowski; Vincent Houtsma (OFC, 2025)

480 Gbit/s and 240 Gbit/s Single-Carrier Super-Rated Upstream Burst-Mode Coherent PON Utilizing Off-the-Shelf Coherent Receiver. - Kovendhan Vijayan; Robert Borkowski; Qian Hu; Doutje T. van Veen; Vincent Houtsma (OFC, 2025)