Advanced FEC for 200 Gb/s Transceiver in 800 GbE and 1.6 TbE Standard

200 Gb/s transceiver specification is under development in IEEE 802.3 as an essential technology for 800 GbE and 1.6 TbE, including electrical and optical interconnection applications. Both IM-DD and coherent modulations are being considered for optical solutions. Due to the higher rate transmission and more stringent requirements, advanced FEC beyond RS (544, 514) code used in 100 Gb/s transceivers is most likely to be mandatory. To enable 200 Gb/s transceivers for 800 GbE and 1.6 TbE, this article investigates on FEC coding gain performance, latency, and area from logic layer perspective.