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2020 – today
- 2024
[c65]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: 1-3- 2023
- [c64]Vincent Lauinger
, Fred Buchali, Laurent Schmalen:
Improving the Bootstrap of Blind Equalizers with Variational Autoencoders. OFC 2023: 1-3 - [i6]Vincent Lauinger, Fred Buchali, Laurent Schmalen:
Improving the Bootstrap of Blind Equalizers with Variational Autoencoders. CoRR abs/2301.06576 (2023) - 2022
- [j5]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): 2529-2539 (2022) - [c63]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: 1-3 - [i5]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 abs/2204.05723 (2022) - [i4]Vincent Lauinger, Fred Buchali, Laurent Schmalen:
Blind Equalization and Channel Estimation in Coherent Optical Communications Using Variational Autoencoders. CoRR abs/2204.11776 (2022) - 2021
- [j4]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): 2611-2623 (2021) - [c62]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: 1-4 - [c61]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: 1-4 - [c60]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: 1-3 - [c59]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: 1-3 - [c58]Fred Buchali:
Beyond 1 Tbit/s transmission using high-speed DACs and analog multiplexing. OFC 2021: 1-56 - [c57]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: 1-3 - [c56]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: 1-3 - [i3]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 abs/2109.10553 (2021) - 2020
- [c55]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: 1-4 - [c54]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: 1-4 - [c53]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: 1-4 - [c52]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: 1-4 - [c51]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: 1-4 - [c50]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: 1-3 - [c49]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: 1-3 - [c48]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: 1-3 - [c47]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: 1-3
2010 – 2019
- 2019
- [c46]Fred Buchali, Mathieu Chagnon, Karsten Schuh:
Transmission Link Optimization for Coherent 4 Tb/s Extended Reach (ZR) Transmission. OFC 2019: 1-3 - [c45]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: 1-3 - [c44]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: 1-3 - [c43]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: 1-3 - [c42]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: 1-3 - 2018
- [c41]Fred Buchali, Mathieu Chagnon, Karsten Schuh, Po Dong, Henning Bülow:
Amplifier Less 400 Gb/s Coherent Transmission at Short Reach. ECOC 2018: 1-3 - [c40]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: 1-3 - [c39]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: 1-3 - [c38]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: 1-3 - [c37]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: 1-3 - [c36]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: 1-3 - [c35]Jokhakar Jignesh, Tobias A. Eriksson, Mathieu Chagnon, Bill Corcoran, Arthur James Lowery, Fred Buchali, Henning Bülow:
Transmitter-side Volterra Filtering for Increased Dispersion Tolerance in 56 Gbaud PAM-4 Systems. OFC 2018: 1-3 - [c34]Son T. Le, Karsten Schuh, Fred Buchali, Henning Bülow:
100 Gbps b-modulated Nonlinear Frequency Division Multiplexed Transmission. OFC 2018: 1-3 - [c33]Son Thai Le, Karsten Schuh, Mathieu Chagnon, Fred Buchali, Henning Bülow:
1.6Tbps WDM Direct Detection Transmission with Virtual-Carrier over 1200km. OFC 2018: 1-3 - [i2]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 abs/1803.02206 (2018) - 2017
- [c32]Fred Buchali, Wilfried Idler, Roman Dischler, Tobias A. Eriksson, Laurent Schmalen:
Spectrally Efficient Probabilistically Shaped Square 64QAM to 256 QAM. ECOC 2017: 1-3 - [c31]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: 1-3 - [c30]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: 1-3 - [c29]Tobias A. Eriksson, Fred Buchali:
Experimental Investigation of the Impact of Minimizing Fourth-order Modulation Factor using Dispersion Optimization. ECOC 2017: 1-3 - [c28]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: 1-3 - [c27]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: 1-3 - [c26]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: 1-3 - [c25]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: 1-3 - [c24]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: 1-3 - [c23]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: 1-3 - [c22]Fred Buchali, Wilfried Idler, Laurent Schmalen, Qian Hu:
Flexible optical transmission close to the Shannon limit by probabilistically shaped QAM. OFC 2017: 1-3 - [c21]Tobias A. Eriksson, Fred Buchali, Wilfried Idler, Laurent Schmalen, Gabriel Charlet:
Electronically subcarrier multiplexed PM-32QAM with optimized FEC overheads. OFC 2017: 1-3 - [c20]Tobias A. Eriksson, Fred Buchali, Laurent Schmalen:
Nonlinear mitigation using probabilistically shaped real-valued modulation formats. OFC 2017: 1-3 - [c19]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: 1-3 - [c18]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: 1-3 - [c17]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: 1-3 - 2016
- [c16]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: 1-3 - [c15]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: 1-3 - 2015
- [c14]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: 1-3 - [c13]Fred Buchali, Laurent Schmalen, Qian Hu, Di Che:
Low latency digital regenerator for dual polarization QAM signals. ECOC 2015: 1-3 - [c12]Fred Buchali, Henning Bülow, Karsten Schuh, Wilfried Idler:
4D-CMA: Enabling separation of channel compensation and polarization demultiplex. OFC 2015: 1-3 - [c11]Fred Buchali, Wilfried Idler, Laurent Schmalen, Karsten Schuh:
Performance and advantages of 100 Gb/s QPSK/8QAM hybrid modulation formats. OFC 2015: 1-3 - [c10]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: 1-3 - [i1]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 abs/1509.08836 (2015) - 2014
- [c9]Fred Buchali, Laurent Schmalen, Karsten Schuh, Wilfried Idler:
Optimization of time-division hybrid-modulation and its application to rate adaptive 200Gb transmission. ECOC 2014: 1-3 - [c8]Karsten Schuh, Fred Buchali:
Compensation of fiber nonlinearities for 32 Gbaud 16QAM and QPSK transmission. ECOC 2014: 1-3 - [c7]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: 1-3 - [c6]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: 1-3 - [c5]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: 1-3 - [c4]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: 1-3 - 2013
- [c3]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: 1-3 - [c2]Henning Bülow, Talha Rahman, Fred Buchali, Wilfried Idler, Wolfgang Kuebart:
Transmission of 4-D modulation formats at 28-Gbaud. OFC/NFOEC 2013: 1-3 - [c1]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: 1-3 - 2012
- [j3]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): B42-B51 (2012) - 2010
- [j2]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): 47-59 (2010)
2000 – 2009
- 2009
- [j1]Fred Buchali, Roman Dischler, Xiang Liu:
Optical OFDM: A promising high-speed optical transport technology. Bell Labs Tech. J. 14(1): 125-146 (2009)
Coauthor Index
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