Fred Buchali

Publication Activity (10 Years)

Years Active: 2009-2024
Publications (10 Years): 64

Top Topics

Modulation Scheme

Forward Error Correction

Experimental Comparison

Top Venues

IEEE J. Sel. Areas Commun.

Publications

Qian Hu, Tobias Tannert, Markus Grözing, Gregory Raybon, Robert Borkowski, Fred Buchali, Xi Chen, Patrick Iannone, Georg Rademacher, Roland Ryf
467 Gbit/s Net Bitrate IM/DD Transmission Using 176 GBd PAM-8 Enabled by SiGe AMUX with Excellent Linearity. OFC (2024)
Vincent Lauinger, Fred Buchali, Laurent Schmalen
Improving the Bootstrap of Blind Equalizers with Variational Autoencoders. CoRR (2023)
Vincent Lauinger, Fred Buchali, Laurent Schmalen
Improving the Bootstrap of Blind Equalizers with Variational Autoencoders. OFC (2023)
Vincent Lauinger, Fred Buchali, Laurent Schmalen
Blind Equalization and Channel Estimation in Coherent Optical Communications Using Variational Autoencoders. CoRR (2022)
Vincent Lauinger, Fred Buchali, Laurent Schmalen
Blind Equalization and Channel Estimation in Coherent Optical Communications Using Variational Autoencoders. IEEE J. Sel. Areas Commun. 40 (9) (2022)
Robert Borkowski, Qian Hu, Yannick Lefevre, Fred Buchali, René Bonk, Karsten Schuh, Junho Cho, Juerg Leuthold, Wolfgang Heni, Benedikt Baeuerle, Claudia Hoessbacher
Experimental Evaluation of PAM and Polybinary Modulation for Intra-DCI Optical Lanes with up to 300 Gbit/s Net Bitrates. OFC (2022)
Laurent Schmalen, Tobias A. Eriksson, Fred Buchali, Roman Dischler, Ulrich Gebhard
Distributed Transmission and Spatially Coupled Forward Error Correction in Regenerative Multipoint-to-Point Networks. CoRR (2022)
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, Christian Funck, Yuriy Fedoryshyn, Juerg Leuthold, Wolfgang Heni, Benedikt Baeuerle, Claudia Hoessbacher
Plasmonic-MZM-based Short-Reach Transmission up to 10 km Supporting >304 GBd Polybinary or 432 Gbit/s PAM-8 Signaling. ECOC (2021)
Vladislav Neskorniuk, Fred Buchali, Vinod Bajaj, Sergei K. Turitsyn, Jaroslaw E. Prilepsky, Vahid Aref
Neural-Network-Based Nonlinearity Equalizer for 128 GBaud Coherent Transcievers. OFC (2021)
Kaoutar Benyahya, Amirhossein Ghazisaeidi, Vahid Aref, Mathieu Chagnon, Aymeric Arnould, Stenio Ranzini, Haïk Mardoyan, Fred Buchali, Jeremie Renaudier
On the Comparison of Single-Carrier vs. Digital Multi-Carrier Signaling for Long-Haul Transmission of Probabilistically Shaped Constellation Formats. CoRR (2021)
Fred Buchali
Beyond 1 Tbit/s transmission using high-speed DACs and analog multiplexing. OFC (2021)
Kaoutar Benyahya, Amirhossein Ghazisaeidi, Vahid Aref, Mathieu Chagnon, Aymeric Arnould, Stenio Ranzini, Haïk Mardoyan, Fred Buchali, Jeremie Renaudier
On the Comparison of Single-Carrier vs. Digital Multi-Carrier Signaling for Long-Haul Transmission of Probabilistically Shaped Constellation Formats. OFC (2021)
Qian Hu, Karsten Schuh, Michael Collisi, Vahid Aref, Horst Hettrich, Rolf Schmid, Fred Buchali, Michael Möller
120 GSa/s BiCMOS Analog Multiplexer Enabling 360 Gbit/s DSCM-PCS-256QAM IM/DD Transmission. OFC (2021)
Vinod Bajaj, Fred Buchali, Mathieu Chagnon, Sander Wahls, Vahid Aref
54.5 Tb/s WDM Transmission over Field Deployed Fiber Enabled by Neural Network-Based Digital Pre-Distortion. OFC (2021)
Karsten Schuh, Qian Hu, Roman Dischler, Vahid Aref, Fred Buchali, Son Thai Le, Michael Collisi, Michael Möller, Horst Hettrich, Rolf Schmid, Xuan-Quang Du, Markus Grözing, Manfred Berroth
High-speed IM/DD transmission with analog (de-)multiplexers. ECOC (2021)
Philipp Thomas, Tobias Tannert, Markus Grözing, Manfred Berroth, Qian Hu, Fred Buchali
1-to-4 Analog Demultiplexer With up to 128 GS/s for Interleaving of Bandwidth-Limited Digitizers in Wireline and Optical Receivers. IEEE J. Solid State Circuits 56 (9) (2021)
Qian Hu, Karsten Schuh, Robert Borkowski, Fred Buchali, Henning Bülow
120 Gbaud IM/DD PAM-4 Transmission over 1.5 km SMF Using a Single CMOS DAC with <20 GHz Analog Bandwidth. ECOC (2020)
Fred Buchali, Vincent Lauinger, Mathieu Chagnon, Karsten Schuh, Vahid Aref
1.1 Tb/s/λ at 9.8 Bit/s/Hz DWDM Transmission over DCI Distances Supported by CMOS DACs. OFC (2020)
Karsten Schuh, Qian Hu, Michael Collisi, Roman Dischler, Mathieu Chagnon, Fred Buchali, Horst Hettrich, Rolf Schmid, Michael Möller
100 GSa/s BiCMOS Analog Multiplexer Based 100 GBd PAM Transmission over 20 km Single-Mode Fiber in the C-Band. ECOC (2020)
Son T. Le, Karsten Schuh, Fred Buchali, Tomislav Drenski, Andrew Hills, Malcom King, Tod Sizer
Optical Single-Sideband Direct Detection Transmissions: Recent Progress and Commercial Aspects. ECOC (2020)
Vinod Bajaj, Fred Buchali, Mathieu Chagnon, Sander Wahls, Vahid Aref
Single-channel 1.61 Tb/s Optical Coherent Transmission Enabled by Neural Network-Based Digital Pre-Distortion. ECOC (2020)
Fred Buchali, Vahid Aref, Mathieu Chagnon, Karsten Schuh, Horst Hettrich, Anna Bielik, Lars Altenhain, Markus Guntermann, Rolf Schmid, Michael Möller
1.52 Tb/s Single Carrier Transmission Supported by a 128 GSa/s SiGe DAC. OFC (2020)
Fred Buchali, Vahid Aref, Mathieu Chagnon, Roman Dischler, Horst Hettrich, Rolf Schmid, Michael Möller
52.1 Tb/s C-band DCI transmission over DCI distances at 52.1 Tb/s C-Band DCI Transmission over DCI Distances at 1.49 Tb/s/λ.49 Tbsλ. ECOC (2020)
Karsten Schuh, Fred Buchali, Roman Dischler, Mathieu Chagnon, Vahid Aref, Henning Bülow, Qian Hu, Florian Pulka, Massimo Frascolla, Esmaeel Alhammadi, Adel Samhan, Islam Younis, Mohamed El-Zonkoli, Peter Winzer
49.2-Tbit/s WDM Transmission over 2×93-km Field-Deployed Fiber. OFC (2020)
Qian Hu, Robert Borkowski, Mathieu Chagnon, Karsten Schuh, Fred Buchali, Henning Bülow
Novel Optical Field Reconstruction for IM/DD with Receiver Bandwidth Well below Full Optical Signal Bandwidth. OFC (2020)
Fred Buchali, Mathieu Chagnon, Karsten Schuh
Transmission Link Optimization for Coherent 4 Tb/s Extended Reach (ZR) Transmission. OFC (2019)
Qian Hu, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Henning Bülow
84 GBd Faster-Than-Nyquist PAM-4 Transmission using Only Linear Equalizer at Receiver. OFC (2019)
Fred Buchali, Karsten Schuh, Son Thai Le, Xuan-Quang Du, Markus Grozing, Manfred Berroth
A SiGe HBT BiCMOS 1-to-4 ADC Frontend Supporting 100 GBaud PAM4 Reception at 14 GHz Digitizer Bandwidth. OFC (2019)
Karsten Schuh, Son Thai Le, Roman Dischler, Fred Buchali
Transmission of 90 Gbd 32 QAM Over 480 km of SSMF with Kramers-Kronig Detection. OFC (2019)
Son Thai Le, Karsten Schuh, Roman Dischler, Fred Buchali, Laurent Schmalen, Henning Bülow
5×510 Gbps Single-Polarization Direct-Detection WDM Transmission over 80 km of SSMF. OFC (2019)
Fanny Jardel, Tobias A. Eriksson, Cyril Méasson, Amirhossein Ghazisaeidi, Fred Buchali, Wilfried Idler, Joseph J. Boutros
Experiments and Shaping Tradeoffs for Long-Haul Transmissions. CoRR (2018)
Qian Hu, Fred Buchali, Mathieu Chagnon, Karsten Schuh, Henning Bülow
3.6-Tbps Duobinary 16-QAM Transmission with Improved Tolerance to Cascaded ROADM Filtering Penalty. ECOC (2018)
Son T. Le, Karsten Schuh, Fred Buchali, Henning Bülow
100 Gbps b-modulated Nonlinear Frequency Division Multiplexed Transmission. OFC (2018)
Son Thai Le, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Henning Bülow
1.53-Tbps CPRI-Equivalent Data Rate Transmission with Kramers-Kronig Receiver for Mobile Fronthaul Links. ECOC (2018)
Jokhakar Jignesh, Tobias A. Eriksson, Mathieu Chagnon, Bill Corcoran, Arthur J. Lowery, Fred Buchali, Henning Bülow
Transmitter-side Volterra Filtering for Increased Dispersion Tolerance in 56 Gbaud PAM-4 Systems. OFC (2018)
Son Thai Le, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Henning Bülow
1.6Tbps WDM Direct Detection Transmission with Virtual-Carrier over 1200km. OFC (2018)
Fred Buchali, Qian Hu, Mathieu Chagnon, Karsten Schuh, Laurent Schmalen, Sergejs Makovejs
Flexible Transmission Enabled by Novel M2-QAM Formats with Record Distance - Spectral Efficiency Tuneability. OFC (2018)
Qian Hu, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Henning Bülow
Up to 94 GBd THP PAM-4 Transmission with 33 GHz Bandwidth Limitation. ECOC (2018)
Fred Buchali, Mathieu Chagnon, Karsten Schuh, Po Dong, Henning Bülow
Amplifier Less 400 Gb/s Coherent Transmission at Short Reach. ECOC (2018)
Qian Hu, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Son Thai Le, Henning Bülow
50 Gb/s PAM-4 Transmission Over 80-km SSMF Without Dispersion Compensation. ECOC (2018)
Son T. Le, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Roman Dischler, Vahid Aref, Henning Bülow, Klaus M. Engenhardt
8×256Gbps Virtual-Carrier Assisted WDM Direct-Detection Transmission over a Single Span of 200km. ECOC (2017)
Qian Hu, Roman Dischler, Karsten Schuh, Henning Bülow, Laurent Schmalen, Fred Buchali
Beating Bandwidth Limitation for High-speed PAM-4 Transmission Based on Turbo Equalizer. ECOC (2017)
Fred Buchali, Wilfried Idler, Laurent Schmalen, Qian Hu
Flexible optical transmission close to the Shannon limit by probabilistically shaped QAM. OFC (2017)
Tobias A. Eriksson, Fred Buchali, Laurent Schmalen
Nonlinear mitigation using probabilistically shaped real-valued modulation formats. OFC (2017)
Tobias A. Eriksson, Fred Buchali, Wilfried Idler, Laurent Schmalen, Gabriel Charlet
Electronically subcarrier multiplexed PM-32QAM with optimized FEC overheads. OFC (2017)
Karsten Schuh, Fred Buchali, Wilfried Idler, Tobias A. Eriksson, Laurent Schmalen, Wolfgang Templ, Lars Altenhain, Ulrich Dumler, Rolf Schmid, Michael Möller, Klaus Engenhardt
Single carrier 1.2 Tbit/s transmission over 300 km with PM-64 QAM at 100 GBaud. OFC (2017)
Mathieu Chagnon, Tobias A. Eriksson, Roman Dischler, Fred Buchali, Henning Bülow, Stephan ten Brink
Duobinary IQ Modulation Schemes for C- and O-band PAM4 Direct Detect Systems. ECOC (2017)
Karsten Schuh, Fred Buchali, Wilfried Idler, Tobias A. Eriksson, Wolfgang Templ, Lars Altenhain, Ulrich Dumler, Rolf Schmid, Michael Möller
800 Gbit/s dual channel transmitter with 1.056 Tbit/s gross rate. OFC (2017)
Tobias A. Eriksson, Mathieu Chagnon, Fred Buchali, Karsten Schuh, Stephan ten Brink, Laurent Schmalen
56 Gbaud Probabilistically Shaped PAM8 for Data Center Interconnects. ECOC (2017)
Tobias A. Eriksson, Fred Buchali
Experimental Investigation of the Impact of Minimizing Fourth-order Modulation Factor using Dispersion Optimization. ECOC (2017)
Fanny Jardel, Tobias A. Eriksson, Fred Buchali, Wilfried Idler, Amirhossein Ghazisaeidi, Cyril Measson, Joseph J. Boutros
Experimental Comparison of 64-QAM and Combined Geometric-Probabilistic Shaped 64-QAM. ECOC (2017)
Qian Hu, Fred Buchali, Laurent Schmalen, Wilfried Idler, Roman Dischler, Vahid Aref, Henning Bülow
Inter-Channel Crosstalk Compensation for Time-Frequency Packing Systems. ECOC (2017)
Fred Buchali, Wilfried Idler, Roman Dischler, Tobias A. Eriksson, Laurent Schmalen
Spectrally Efficient Probabilistically Shaped Square 64QAM to 256 QAM. ECOC (2017)
Mathieu Chagnon, Tobias A. Eriksson, Fred Buchali, Henning Bülow, Stephan ten Brink
Single Carrier 168 Gb/s PAM8 over 80 km Below HD-FEC Using Simple Receiver Equalization for Data Centre Interconnects. ECOC (2017)
Qian Hu, Fred Buchali, Laurent Schmalen, Wilfried Idler, Roman Dischler, Vahid Aref, Henning Bülow
Transmit filter optimization for improved performance of time-frequency packing systems. OFC (2017)
Laurent Schmalen, Tobias A. Eriksson, Fred Buchali, Roman Dischler, Ulrich Gebhard
Distributed Transmission and Spatially Coupled Forward Error Correction in Regenerative Multipoint-to-Point Networks. ECOC (2017)
Fred Buchali, Wilfried Idler, Nazanin Rastegardoost, Tomislav Drenski, R. Ward, L. Zhao
Preemphased prime frequency multicarrier bases ENOB assessment and its application for optimizing a dual-carrier 1-Tb/s QAM transmitter. OFC (2016)
Wilfried Idler, Fred Buchali, Karsten Schuh
Experimental study of symbol-rates and MQAM formats for single carrier 400 Gb/s and few carrier 1 Tb/s options. OFC (2016)
Fred Buchali, Wilfried Idler, Laurent Schmalen, Karsten Schuh
Performance and advantages of 100 Gb/s QPSK/8QAM hybrid modulation formats. OFC (2015)
Fred Buchali, Henning Bülow, Karsten Schuh, Wilfried Idler
4D-CMA: Enabling separation of channel compensation and polarization demultiplex. OFC (2015)
Fred Buchali, Laurent Schmalen, Qian Hu, Di Che
Low latency digital regenerator for dual polarization QAM signals. ECOC (2015)
Wilfried Idler, Fred Buchali, Laurent Schmalen, Karsten Schuh, Henning Bülow
Hybrid modulation formats outperforming 16QAM and 8QAM in transmission distance and filtering with cascaded WSS. OFC (2015)
Fred Buchali, Georg Böcherer, Wilfried Idler, Laurent Schmalen, Patrick Schulte, Fabian Steiner
Experimental demonstration of capacity increase and rate-adaptation by probabilistically shaped 64-QAM. ECOC (2015)
Fred Buchali, Georg Böcherer, Wilfried Idler, Laurent Schmalen, Patrick Schulte, Fabian Steiner
Experimental Demonstration of Capacity Increase and Rate-Adaptation by Probabilistically Shaped 64-QAM. CoRR (2015)
Fred Buchali, Laurent Schmalen, Karsten Schuh, Wilfried Idler
Optimization of time-division hybrid-modulation and its application to rate adaptive 200Gb transmission. ECOC (2014)
Fred Buchali, Laurent Schmalen, Axel Klekamp, Karsten Schuh, Andreas Leven
5 × 50 Gb/s WDM transmission of 32 Gbaud DP-3-PSK over 36, 000 km fiber with spatially coupled LDPC coding. OFC (2014)
Fred Buchali, Axel Klekamp, Laurent Schmalen, Tomislav Drenski
Implementation of 64QAM at 42.66 GBaud using 1.5 samples per symbol DAC and demonstration of up to 300 km fiber transmission. OFC (2014)
Wilfried Idler, Fred Buchali, Karsten Schuh, N. Cameron, Tino Brast, S. Schmid, Andreas G. Steffan
1 Tb/s - 4×343 Gb/s subcarriers on 50GHz grid - transmission over 480 km SMF with 22 GHz bandwidth semiconductor modulator. OFC (2014)
Karsten Schuh, Fred Buchali
Compensation of fiber nonlinearities for 32 Gbaud 16QAM and QPSK transmission. ECOC (2014)
Henning Bülow, Xiaofeng Lu, Laurent Schmalen, Axel Klekamp, Fred Buchali
Experimental performance of 4D optimized constellation alternatives for PM-8QAM and PM-16QAM. OFC (2014)
Fred Buchali, Karsten Schuh, Laurent Schmalen, Wilfried Idler, Eugen Lach, Andreas Leven
1-Tbit/s dual-carrier DP 64QAM transmission at 64Gbaud with 40% overhead soft-FEC over 320km SSMF. OFC/NFOEC (2013)
Wilfried Idler, Fred Buchali, Karsten Schuh, Detlef Roesener, Eugen Lach, Andreas Leven
Spectral pre-distortion with FPGA and DAC at 448-Gb/s DP-16QAM improving nonlinear threshold power. OFC/NFOEC (2013)
Henning Bülow, Talha Rahman, Fred Buchali, Wilfried Idler, Wolfgang Kuebart
Transmission of 4-D modulation formats at 28-Gbaud. OFC/NFOEC (2013)
Eleni Palkopoulou, Marianna Angelou, Dimitrios Klonidis, Konstantinos Christodoulopoulos, Axel Klekamp, Fred Buchali, Emmanouel A. Varvarigos, Ioannis Tomkos
Quantifying Spectrum, Cost, and Energy Efficiency in Fixed-Grid and Flex-Grid Networks [Invited]. JOCN 4 (11) (2012)
Xiang Liu, Fred Buchali, Robert W. Tkach, Sethumadhavan Chandrasekhar
Mitigation of fiber nonlinear impairments in polarization division multiplexed OFDM transmission. Bell Labs Tech. J. 14 (4) (2010)
Fred Buchali, Roman Dischler, Xiang Liu
Optical OFDM: A promising high-speed optical transport technology. Bell Labs Tech. J. 14 (1) (2009)