Characterization and Optimization of InGaAs/InP Photodiodes with High Saturation Current

The operation and performance of 34-mum-diameter InGaAs/InP modified charge compensated unitraveling carrier photodiodes (CC MUTCs) are studied utilizing a commercial device simulator. The device has a high responsivity of 0.75 A/W and saturation current of 100 mA. Excellent agreement has been achieved between simulations and experiments. Parameters of the photodiode are further optimized to maximize the saturation current.