Can we perform Coherent Detection without DSP in Datacenter Interconnects?

The abstract is:

Recently we have witnessed phenomenal demand for ever increasing bandwidth in datacenter networks driven by emergence of generative AI such as ChatGPT and Sora. There is consensus that coherent communication will gradually penetrate into shorter or shorter reaches in datacenter networks.  In this talk, we propose the concept of quasi frequency-synchronous optical network (FSON) architecture in order to simplify coherent optical detection. We also will present a novel optical carrier phase recovery scheme based on optical phase-locked loop. We then will showcase the world-first polarization and phase demultiplexing of DP-QPSK signals in optical domain without employing electronic DSP. Our proposed DSP-free coherent detection provides an attractive solution for next generation datacenter transport with low cost and power consumption.



William Shieh ( 谢伟), Chair Professor, School of Engineering, Westlake University

Short bio of the speakers: 

Prof. William Shieh received the M.S. degree in electrical engineering and the Ph.D. degree in physics from the University of Southern California, Los Angles, in 1994 and 1996, respectively. He had worked in various previous renowned institutions such as Jet Propulsion Laboratories, Pasadena, California, and Bell Laboratories, Holmdel, New Jersey. From 2004 to 2022, he had been with the Department of Electrical and Electronic Engineering, University of Melbourne, Australia. In 2022, he joins the Westlake University as Chair Professor in Optical Communication and Sensing.  He has published more than 300 journal and conference papers and submitted 14 U.S. patents (nine issued).


He has been awarded Australian Future Fellowship (2011-2014).  He is a fellow of both IEEE and Optical Society of America (OSA).