Experimental Demonstration of 4-Port Photonic Reservoir Computing for Equalization of 4 and16 QAM signals

Abstract:
We experimentally demonstrate equalization of coherently modulated signals at 28Gbaud using a passive, 16-node, integrated, 4-port photonic reservoir. The reservoir replaces computationally expensive DSP procedures for passive/active equalization and integrates with other DSP blocks achieving BERs on-par with legacy DSP for 4 and 16QAM signals.