A Novel Photodetector Based on the Monolithic Integration of the VCSOA and PIN

A novel photodetector based on a VCSOA monolithically integrated with the PIN is proposed and analyzed in this paper. The gain bandwidth product around 470GHz has been achieved by simulation, showing its advantage over the conventional APD especially at a bit rate larger than 10Gb/s. The device has been fabricated and the preliminary testing results are presented.