A 112-Gb/s Hybrid-Integrated Si Photonic WDM Receiver with Ring-Resonator Filters

We present a hybrid-integrated Si photonic WDM receiver consisting of a photonic IC containing four ring resonator WDM filters with photodetectors and an electronic IC containing four transimpedance amplifiers. The ring resonators are thermally controlled by FPGA for stable 4λ × 28-Gb/s receiver operation.