Fred Buchali

According to our database, Fred Buchali authored at least 71 papers between 2009 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

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, Patrick Iannone, Georg Rademacher, Roland Ryf

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

2023

Improving the Bootstrap of Blind Equalizers with Variational Autoencoders.

Vincent Lauinger, Fred Buchali, Laurent Schmalen

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

2022

Blind Equalization and Channel Estimation in Coherent Optical Communications Using Variational Autoencoders.

Vincent Lauinger, Fred Buchali, Laurent Schmalen

IEEE J. Sel. Areas Commun., 2022

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

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2022

2021

1-to-4 Analog Demultiplexer With up to 128 GS/s for Interleaving of Bandwidth-Limited Digitizers in Wireline and Optical Receivers.

Philipp Thomas, Tobias Tannert, Markus Grözing, Manfred Berroth, Qian Hu, Fred Buchali

IEEE J. Solid State Circuits, 2021

Neural-Network-Based Nonlinearity Equalizer for 128 GBaud Coherent Transcievers.

Vladislav Neskorniuk, Fred Buchali, Vinod Bajaj, Sergei K. Turitsyn, Jaroslaw E. Prilepsky, Vahid Aref

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

120 GSa/s BiCMOS Analog Multiplexer Enabling 360 Gbit/s DSCM-PCS-256QAM IM/DD Transmission.

Qian Hu, Karsten Schuh, Michael Collisi, Vahid Aref, Horst Hettrich, Rolf Schmid, Fred Buchali, Michael Möller

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

Beyond 1 Tbit/s transmission using high-speed DACs and analog multiplexing.

Fred Buchali

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

On the Comparison of Single-Carrier vs. Digital Multi-Carrier Signaling for Long-Haul Transmission of Probabilistically Shaped Constellation Formats.

Kaoutar Benyahya, Amirhossein Ghazisaeidi, Vahid Aref, Mathieu Chagnon, Aymeric Arnould, Stenio Ranzini, Haïk Mardoyan, Fred Buchali, Jeremie Renaudier

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

54.5 Tb/s WDM Transmission over Field Deployed Fiber Enabled by Neural Network-Based Digital Pre-Distortion.

Vinod Bajaj, Fred Buchali, Mathieu Chagnon, Sander Wahls, Vahid Aref

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

High-speed IM/DD transmission with analog (de-)multiplexers.

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

Proceedings of the European Conference on Optical Communication, 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, Christian Funck, Yuriy Fedoryshyn, Juerg Leuthold, Wolfgang Heni, Benedikt Baeuerle, Claudia Hoessbacher

Proceedings of the European Conference on Optical Communication, 2021

2020

49.2-Tbit/s WDM Transmission over 2×93-km Field-Deployed Fiber.

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

Proceedings of the Optical Fiber Communications Conference and Exhibition, 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

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

1.1 Tb/s/λ at 9.8 Bit/s/Hz DWDM Transmission over DCI Distances Supported by CMOS DACs.

Fred Buchali, Vincent Lauinger, Mathieu Chagnon, Karsten Schuh, Vahid Aref

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

1.52 Tb/s Single Carrier Transmission Supported by a 128 GSa/s SiGe DAC.

Fred Buchali, Vahid Aref, Mathieu Chagnon, Karsten Schuh, Horst Hettrich, Anna Bielik, Lars Altenhain, Markus Guntermann, Rolf Schmid, Michael Möller

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

100 GSa/s BiCMOS Analog Multiplexer Based 100 GBd PAM Transmission over 20 km Single-Mode Fiber in the C-Band.

Karsten Schuh, Qian Hu, Michael Collisi, Roman Dischler, Mathieu Chagnon, Fred Buchali, Horst Hettrich, Rolf Schmid, Michael Möller

Proceedings of the European Conference on Optical Communications, 2020

Optical Single-Sideband Direct Detection Transmissions: Recent Progress and Commercial Aspects.

Son T. Le, Karsten Schuh, Fred Buchali, Tomislav Drenski, Andrew Hills, Malcom King, Tod Sizer

Proceedings of the European Conference on Optical Communications, 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

Proceedings of the European Conference on Optical Communications, 2020

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.

Fred Buchali, Vahid Aref, Mathieu Chagnon, Roman Dischler, Horst Hettrich, Rolf Schmid, Michael Möller

Proceedings of the European Conference on Optical Communications, 2020

Single-channel 1.61 Tb/s Optical Coherent Transmission Enabled by Neural Network-Based Digital Pre-Distortion.

Vinod Bajaj, Fred Buchali, Mathieu Chagnon, Sander Wahls, Vahid Aref

Proceedings of the European Conference on Optical Communications, 2020

2019

Transmission of 90 Gbd 32 QAM Over 480 km of SSMF with Kramers-Kronig Detection.

Karsten Schuh, Son Thai Le, Roman Dischler, Fred Buchali

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

5×510 Gbps Single-Polarization Direct-Detection WDM Transmission over 80 km of SSMF.

Son Thai Le, Karsten Schuh, Roman Dischler, Fred Buchali, Laurent Schmalen, Henning Bülow

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

84 GBd Faster-Than-Nyquist PAM-4 Transmission using Only Linear Equalizer at Receiver.

Qian Hu, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Henning Bülow

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

A SiGe HBT BiCMOS 1-to-4 ADC Frontend Supporting 100 GBaud PAM4 Reception at 14 GHz Digitizer Bandwidth.

Fred Buchali, Karsten Schuh, Son Thai Le, Xuan-Quang Du, Markus Grozing, Manfred Berroth

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

Transmission Link Optimization for Coherent 4 Tb/s Extended Reach (ZR) Transmission.

Fred Buchali, Mathieu Chagnon, Karsten Schuh

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2019

2018

Experiments and Shaping Tradeoffs for Long-Haul Transmissions.

Fanny Jardel, Tobias A. Eriksson, Cyril Méasson, Amirhossein Ghazisaeidi, Fred Buchali, Wilfried Idler, Joseph J. Boutros

CoRR, 2018

1.6Tbps WDM Direct Detection Transmission with Virtual-Carrier over 1200km.

Son Thai Le, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Henning Bülow

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

100 Gbps b-modulated Nonlinear Frequency Division Multiplexed Transmission.

Son T. Le, Karsten Schuh, Fred Buchali, Henning Bülow

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Transmitter-side Volterra Filtering for Increased Dispersion Tolerance in 56 Gbaud PAM-4 Systems.

Jokhakar Jignesh, Tobias A. Eriksson, Mathieu Chagnon, Bill Corcoran, Arthur James Lowery, Fred Buchali, Henning Bülow

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

Flexible Transmission Enabled by Novel M2-QAM Formats with Record Distance - Spectral Efficiency Tuneability.

Fred Buchali, Qian Hu, Mathieu Chagnon, Karsten Schuh, Laurent Schmalen, Sergejs Makovejs

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

1.53-Tbps CPRI-Equivalent Data Rate Transmission with Kramers-Kronig Receiver for Mobile Fronthaul Links.

Son Thai Le, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Henning Bülow

Proceedings of the European Conference on Optical Communication, 2018

50 Gb/s PAM-4 Transmission Over 80-km SSMF Without Dispersion Compensation.

Qian Hu, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Son Thai Le, Henning Bülow

Proceedings of the European Conference on Optical Communication, 2018

Up to 94 GBd THP PAM-4 Transmission with 33 GHz Bandwidth Limitation.

Qian Hu, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Henning Bülow

Proceedings of the European Conference on Optical Communication, 2018

3.6-Tbps Duobinary 16-QAM Transmission with Improved Tolerance to Cascaded ROADM Filtering Penalty.

Qian Hu, Fred Buchali, Mathieu Chagnon, Karsten Schuh, Henning Bülow

Proceedings of the European Conference on Optical Communication, 2018

Amplifier Less 400 Gb/s Coherent Transmission at Short Reach.

Fred Buchali, Mathieu Chagnon, Karsten Schuh, Po Dong, Henning Bülow

Proceedings of the European Conference on Optical Communication, 2018

2017

800 Gbit/s dual channel transmitter with 1.056 Tbit/s gross rate.

Karsten Schuh, Fred Buchali, Wilfried Idler, Tobias A. Eriksson, Wolfgang Templ, Lars Altenhain, Ulrich Dumler, Rolf Schmid, Michael Möller

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

Single carrier 1.2 Tbit/s transmission over 300 km with PM-64 QAM at 100 GBaud.

Karsten Schuh, Fred Buchali, Wilfried Idler, Tobias A. Eriksson, Laurent Schmalen, Wolfgang Templ, Lars Altenhain, Ulrich Dumler, Rolf Schmid, Michael Möller, Klaus Engenhardt

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

Transmit filter optimization for improved performance of time-frequency packing systems.

Qian Hu, Fred Buchali, Laurent Schmalen, Wilfried Idler, Roman Dischler, Vahid Aref, Henning Bülow

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

Nonlinear mitigation using probabilistically shaped real-valued modulation formats.

Tobias A. Eriksson, Fred Buchali, Laurent Schmalen

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

Electronically subcarrier multiplexed PM-32QAM with optimized FEC overheads.

Tobias A. Eriksson, Fred Buchali, Wilfried Idler, Laurent Schmalen, Gabriel Charlet

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

Flexible optical transmission close to the Shannon limit by probabilistically shaped QAM.

Fred Buchali, Wilfried Idler, Laurent Schmalen, Qian Hu

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2017

Distributed Transmission and Spatially Coupled Forward Error Correction in Regenerative Multipoint-to-Point Networks.

Laurent Schmalen, Tobias A. Eriksson, Fred Buchali, Roman Dischler, Ulrich Gebhard

Proceedings of the European Conference on Optical Communication, 2017

8×256Gbps Virtual-Carrier Assisted WDM Direct-Detection Transmission over a Single Span of 200km.

Son T. Le, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Roman Dischler, Vahid Aref, Henning Bülow, Klaus M. Engenhardt

Proceedings of the European Conference on Optical Communication, 2017

Experimental Comparison of 64-QAM and Combined Geometric-Probabilistic Shaped 64-QAM.

Fanny Jardel, Tobias A. Eriksson, Fred Buchali, Wilfried Idler, Amirhossein Ghazisaeidi, Cyril Measson, Joseph J. Boutros

Proceedings of the European Conference on Optical Communication, 2017

Beating Bandwidth Limitation for High-speed PAM-4 Transmission Based on Turbo Equalizer.

Qian Hu, Roman Dischler, Karsten Schuh, Henning Bülow, Laurent Schmalen, Fred Buchali

Proceedings of the European Conference on Optical Communication, 2017

Inter-Channel Crosstalk Compensation for Time-Frequency Packing Systems.

Qian Hu, Fred Buchali, Laurent Schmalen, Wilfried Idler, Roman Dischler, Vahid Aref, Henning Bülow

Proceedings of the European Conference on Optical Communication, 2017

56 Gbaud Probabilistically Shaped PAM8 for Data Center Interconnects.

Tobias A. Eriksson, Mathieu Chagnon, Fred Buchali, Karsten Schuh, Stephan ten Brink, Laurent Schmalen

Proceedings of the European Conference on Optical Communication, 2017

Experimental Investigation of the Impact of Minimizing Fourth-order Modulation Factor using Dispersion Optimization.

Tobias A. Eriksson, Fred Buchali

Proceedings of the European Conference on Optical Communication, 2017

Duobinary IQ Modulation Schemes for C- and O-band PAM4 Direct Detect Systems.

Mathieu Chagnon, Tobias A. Eriksson, Roman Dischler, Fred Buchali, Henning Bülow, Stephan ten Brink

Proceedings of the European Conference on Optical Communication, 2017

Single Carrier 168 Gb/s PAM8 over 80 km Below HD-FEC Using Simple Receiver Equalization for Data Centre Interconnects.

Mathieu Chagnon, Tobias A. Eriksson, Fred Buchali, Henning Bülow, Stephan ten Brink

Proceedings of the European Conference on Optical Communication, 2017

Spectrally Efficient Probabilistically Shaped Square 64QAM to 256 QAM.

Fred Buchali, Wilfried Idler, Roman Dischler, Tobias A. Eriksson, Laurent Schmalen

Proceedings of the European Conference on Optical Communication, 2017

2016

Experimental study of symbol-rates and MQAM formats for single carrier 400 Gb/s and few carrier 1 Tb/s options.

Wilfried Idler, Fred Buchali, Karsten Schuh

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2016

Preemphased prime frequency multicarrier bases ENOB assessment and its application for optimizing a dual-carrier 1-Tb/s QAM transmitter.

Fred Buchali, Wilfried Idler, Nazanin Rastegardoost, Tomislav Drenski, R. Ward, L. Zhao

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2016

2015

Hybrid modulation formats outperforming 16QAM and 8QAM in transmission distance and filtering with cascaded WSS.

Wilfried Idler, Fred Buchali, Laurent Schmalen, Karsten Schuh, Henning Bülow

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2015

Performance and advantages of 100 Gb/s QPSK/8QAM hybrid modulation formats.

Fred Buchali, Wilfried Idler, Laurent Schmalen, Karsten Schuh

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2015

4D-CMA: Enabling separation of channel compensation and polarization demultiplex.

Fred Buchali, Henning Bülow, Karsten Schuh, Wilfried Idler

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2015

Low latency digital regenerator for dual polarization QAM signals.

Fred Buchali, Laurent Schmalen, Qian Hu, Di Che

Proceedings of the European Conference on Optical Communication, 2015

Experimental demonstration of capacity increase and rate-adaptation by probabilistically shaped 64-QAM.

Fred Buchali, Georg Böcherer, Wilfried Idler, Laurent Schmalen, Patrick Schulte, Fabian Steiner

Proceedings of the European Conference on Optical Communication, 2015

2014

1 Tb/s - 4×343 Gb/s subcarriers on 50GHz grid - transmission over 480 km SMF with 22 GHz bandwidth semiconductor modulator.

Wilfried Idler, Fred Buchali, Karsten Schuh, N. Cameron, Tino Brast, S. Schmid, Andreas G. Steffan

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

Experimental performance of 4D optimized constellation alternatives for PM-8QAM and PM-16QAM.

Henning Bülow, Xiaofeng Lu, Laurent Schmalen, Axel Klekamp, Fred Buchali

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

5 × 50 Gb/s WDM transmission of 32 Gbaud DP-3-PSK over 36, 000 km fiber with spatially coupled LDPC coding.

Fred Buchali, Laurent Schmalen, Axel Klekamp, Karsten Schuh, Andreas Leven

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

Implementation of 64QAM at 42.66 GBaud using 1.5 samples per symbol DAC and demonstration of up to 300 km fiber transmission.

Fred Buchali, Axel Klekamp, Laurent Schmalen, Tomislav Drenski

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

Compensation of fiber nonlinearities for 32 Gbaud 16QAM and QPSK transmission.

Karsten Schuh, Fred Buchali

Proceedings of the European Conference on Optical Communication, 2014

Optimization of time-division hybrid-modulation and its application to rate adaptive 200Gb transmission.

Fred Buchali, Laurent Schmalen, Karsten Schuh, Wilfried Idler

Proceedings of the European Conference on Optical Communication, 2014

2013

Spectral pre-distortion with FPGA and DAC at 448-Gb/s DP-16QAM improving nonlinear threshold power.

Wilfried Idler, Fred Buchali, Karsten Schuh, Detlef Roesener, Eugen Lach, Andreas Leven

Proceedings of the 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), 2013

Transmission of 4-D modulation formats at 28-Gbaud.

Henning Bülow, Talha Rahman, Fred Buchali, Wilfried Idler, Wolfgang Kuebart

Proceedings of the 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), 2013

1-Tbit/s dual-carrier DP 64QAM transmission at 64Gbaud with 40% overhead soft-FEC over 320km SSMF.

Fred Buchali, Karsten Schuh, Laurent Schmalen, Wilfried Idler, Eugen Lach, Andreas Leven

Proceedings of the 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), 2013

2012

Quantifying Spectrum, Cost, and Energy Efficiency in Fixed-Grid and Flex-Grid Networks [Invited].

Eleni Palkopoulou, Marianna Angelou, Dimitrios Klonidis, Konstantinos Christodoulopoulos, Axel Klekamp, Fred Buchali, Emmanouel A. Varvarigos, Ioannis Tomkos

JOCN, 2012

2010

Mitigation of fiber nonlinear impairments in polarization division multiplexed OFDM transmission.

Xiang Liu, Fred Buchali, Robert W. Tkach, Sethumadhavan Chandrasekhar

Bell Labs Tech. J., 2010

2009

Optical OFDM: A promising high-speed optical transport technology.

Fred Buchali, Roman Dischler, Xiang Liu

Bell Labs Tech. J., 2009