Demonstration of 50Gbps IM/DD PAM4 PON over 10GHz Class Optics Using Neural Network Based Nonlinear Equalization

We apply digital back propagation based neural network regression algorithms as the nonlinear equalization approach, and realize up to 50Gb/s PAM4 IM/DD PON transmission for 20km fibre using 10GHz optics within an overall end-to-end 3.6GHz 3-dB bandwidth.