Real-time detection of a 40 Gbps intradyne channel in the presence of multiple received WDM channels

We characterize a single-ended intradyne receiver's performance when multiple channels are received without optical demultiplexing. A 40Gb/s dual-polarization QPSK channel is recovered from 16 interfering channels with less than 2dB OSNR penalty at 1×10
^-3
BER.