A NOVEL ELECTRONICALLY SWITCHED 4-CHANNEL RECEIVER USING INALAS-INGAAS MSM-HEMT TECHNOLOGY FOR WAVELENGTH-DIVISION-MULTIPLEXING SYSTEMS

We demonstrate a novel, monolithically integrated, four-channel optical receiver designed for electronic channel selection of different wavelength channels in a WDM-based optical network. The receiver consists of four InAlAs-InGaAs MSM photodetectors that can be independently switched "on" or "off" electronically by a digital signal. An optical extinction ratio of 20 dB for the MSM detector was observed. The sensitivity of this OEIC receiver is -25.2 dBm at 1.2-Gb/s data rate.