400G Silicon Photonics Integrated Circuit Transceiver Chipsets for CPO, OBO, and Pluggable Modules

400G-FR4 silicon photonics transmit-receive chipsets, compatible with co-packaged-optics, on-board-optics, and pluggable form factors, were demonstrated with a combined bandwidth density of 94Gb/s/mm, energy efficiency of <10pJ/bit, and -5.4dBm OMA sensitivity at the KP4 pre-FEC-BER=2.4e-4.