Demonstration of novel optical multichannel grating demultiplexer receiver (MGD) for HDWDM systems

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Abstract
A novel implementation of a multichannel grating demultiplexer receiver suitable for HDWDM applications is described. The prototype receiver, capable of 10-channel operation spaced at 4nm, uses a 16-element GalnAs/InP monolithic linear photodetector array and silicon preamplifier ICs. The sensitivity at the input to the demultiplexer is – 3 1 dBm at 200Mbit/s. Optical and electrical crosstalk measurements in the receiver are presented, and limited tests have shown that there is a negligible crosstalk penalty.