A polarization-diverse coarse wavelength-division multiplexing silicon photonic receiver

We demonstrate a polarization-diverse coarse wavelength-division multiplexing (CWDM) silicon photonic receiver for co-packaged optics. Furthermore, we confirm that the polarization-dependent loss is compensated by using variable optical attenuators. Our all-in-one photonic integrated circuit exhibits a high shoreline bandwidth density of 266 Gbps/mm.