Experimental Demonstration of Directly Detecting the Output of a Tunable 2-Symbol 10-GBaud QPSK Optical Correlator Using Optical Biasing and Nonlinear Wave Mixing

Abstract

We experimentally demonstrate direct detection of a 2-symbol 5/10-Gbaud QPSK optical correlator output using nonlinear wave mixing and optical biasing. We capture the output using a photodiode and apply power thresholding to find multiple patterns.