Compact hybrid-integrated 400 Gbit/s WDM receiver for short-reach optical interconnect in datacenters

A compact 16×25 Gbit/s multi-wavelength receiver for multi-kilometer reach applications is built on a simple, low cost and scalable hybrid integration scheme on a silica-on-silicon platform. Insertion loss <2 dB and sensitivity <-10 dBm are demonstrated for the complete receiver.