Highly Sensitive 56 Gbps NRZ O-Band BiCMOS-Silicon Photonics Receiver using a Ge/Si Avalanche Photodiode

A hybrid BiCMOS-Silicon Photonics receiver with a waveguide-coupled Ge/Si avalanche photodiode is demonstrated with OMA sensitivities of -14.4dBm for error-free operation at 50 Gbps and -18.6 dBm under the KP4-FEC limit at 56 Gbps NRZ-OOK.