Silicon Photonic Microring Resonator-Based Transceivers for Compact WDM Optical Interconnects

This paper examines the potential of silicon photonic microring resonator-based optical transceivers for compact wavelength-division multiplexing (WDM) optical interconnects. An overview of the photonic devices typically found in a ring resonator optical interconnect platform is provided and the design of transceiver circuits which address key challenges related to the modulators and drop filters is described. The possibility of further improvements in bandwidth density via efficient implementations of >50Gb/s PAM4 modulation with the microring modulators is detailed.