Single-Photon Avalanche Photodiode Based Fiber Optic Receiver for Up to 200 Mb/s

The first fully integrated receiver based on single-photon avalanche diodes (SPADs) for data rates of up to 200 Mb/s is reported. An array of four SPADs in combination with quenching circuits and a short dead time of 3.5 ns is fabricated in a 0.35 μm CMOS process. The responses of the SPADs are combined using an integrated digital latch-type processing circuit to create a single output data stream...