Mitigation of Intra-Channel Nonlinearities Using a Frequency-Domain Volterra Series Equalizer
16 January 2012
We apply a frequency-domain Volterra series nonlinear equalizer to a 20 Gbaud NRZ-QPSK signal propagated over 1600 km. Using 2 samples/symbol we obtain a 2 dB improvement on the nonlinear tolerance over backward propagation split-step Fourier method.