First demonstration of PDM signal amplification using PPLN-based polarization-independent phase sensitive amplifier

摘要

We propose a polarization-independent PSA with a novel polarization-diversity loop configuration using highly efficient PPLN waveguides. Polarization-independent error-free operation for a 40-Gbit/s DQPSK signal and phase-regenerative amplification for an 80-Gbit/s PDM-QPSK signal with artificial phase noise were successfully demonstrated.