Experimental demonstration of phase-retrieving coherent detection of higher-order modulation formats

摘要

Carrier-less coherent detection based on phase retrieval (PR) is demonstrated for optical higher-order modulation formats. The PR receiver based on a two-dimensional photodetector array and a discreteness-aware PR algorithm successfully demodulated 10-Gbaud optical 16QAM and OFDM signals without using any local lights or optical hybrids.