Circuit model of UTC-PD with high power and enhanced bandwidth technique

Abstract

An electrical equivalent circuit model of InGaAs/InP uni travelling carrier photodiode is presented. The model is suitable to be built on any electrical circuit simulator to perform design and optimize the device parameters. We have shown a novel technique of increasing bandwidth of the device by inserting a small shunt inductance in series with the load without sacrificing the device output photocurrent and linearity to a large extent.