Picture of Fred Buchali

Fred Buchali

Stuttgart, Germany


FRED BUCHALI received the diploma degree in electrical engineering in 1988 and the PhD degree in 1991 from Humboldt-University Berlin. During his PhD he worked on InGaAs/InP p-i-n photodiodes for fibre-optic communication. 1992 Fred Buchali joined Alcatel-Lucent Germany. He was involved in development of high speed pin photodiodes including packaging. Since 1999 he works with optical transmission systems group, where he investigated the mitigation of transmission impairments in 10, 40 and 100 Gb/s systems by optical, analog and digital electronic means. His current research interests cover coherent systems for 1Tb/s and beyond using higher level modulation based on single carrier and multi carrier approaches.

Selected Articles and Publications

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

Distributed Transmission and Spatially-Coupled Coding in Multi-Point to Point Networks

Transmit Filter Optimization for Improved Performance of Time-Frequency Packing System

Flexible Optical Transmission close to the Shannon Limit by Probabilistically Shaped QAM

Electronically Subcarrier Multiplexed PM-32QAM with Optimized FEC Overhead

Nonlinear mitigation using probabilistically shaped real-valued modulation formats

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

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

Advanced C plus L-Band Transoceanic Transmission Systems Based on Probabilistically Shaped PDM-64QAM

Advanced C+L-Band Transoceanic Transmission Systems Based on Probabilistically-Shaped PDM-64QAM

Higher-Order Modulation Formats - Concepts and Enabling Devices

1.72 Tbs Virtual-Carrier Assisted WDM Direct-Detection Transmission over 200km

Experimental Demonstration of Capacity Increase and Rate-Adaptation by Probabilistically Shaped 64-QAM

800 Gb/s Dual Channel Transmitter with 1.056 Tb/s gross rate

Nonlinear Tolerant Probabilistically Shaped Real-Valued Modulation

A 62Tb/s Transoceanic Transmission Experiment Using Probabilistically-Shaped PDM-64QAM

Study of subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistic shaped 64QAM

Probabilistic Shaped QAM for Reach and Spectral Efficiency Adaptation

Reach Increasse for High Capacity Optical Transmission Systems by Probabilistic Shaping

Field demonstration of 1 Tb/s superchannel transmission supported by probabilistic shaped constellations

Improvement of Bandwidth Limitation Tolerance for High-speed PAM-4 Transmission Using Turbo Equalizer

Inter-Channel Crosstalk Compensation for Time-Frequency Packing Systems

1.2 Tbit/s (64 QAM at 100 GBaud) transmission over 300 km

Inter-Channel Crosstalk Cancellation for WDM Time-Frequency Packing System

Single Carrier, Single Polarization 168 Gb/s PAM8 over 80 km below HD-FEC for Data Center Interconnects