Self-Homodyne Detection of Polarization-Multiplexed Pilot Tone Signals Using a Polarization Diversity Coherent Receiver

We report a new detection scheme for self-homodyne receivers using a polarization diversity receiver and a prototype pilot tone vector modulator. We show superior performance comparing with intradyne detection using MHz-linewidth lasers, low baud rate QPSK and 16QAM signals and demonstrate 0.9dB improvement in resilience to fiber nonlinearities.