Demonstration of On-chip 640-Gbit/s Throughput, Granularity-flexible Programmable Optical Filtering and Reconfigurable Optical Add/drop Multiplexing on Silicon Platform

By integrating cascaded arrayed-waveguide gratings with array switches on silicon platform, we design and fabricate an on-chip multi-functional photonic signal processor. 640-Gbit/s throughput, granularity-flexible programmable optical filtering and reconfigurable optical add/drop multiplexing are demonstrated experimentally.