Wavelength-selective and tunable optical intensity modulator module for ultrahigh frequency applications: design and simulation results

The design and simulation results of an InGaAs/InP coupled asymmetric quantum well (CAQW) wavelength-selective, tunable and chirp-free optical intensity modulator module for applications in high-speed wavelength division multiplexing (WDM) communication systems are presented. The module is composed of three modulators integrated in tandem and is based on a distributed Bragg reflector (DBR) structure. Bandwidth in excess of 250 GHz at 1.6 V for 12 dB of extinction ratio and 3.0 dB of insertion loss is predicted for a 750 m long module. Optical tuning of 6 A at 1.6 V and tuning speed of 26 GHz is also anticipated.