Influence of nonlinear interaction on the capacity of an optical dispersion-compensating channel

A channel with weight coefficients of nonlinear finite memory is simulated numerically. Areas of the signal power are found where the capacity is higher than that of a regular Gaussian channel. It is shown that an increase in the number of accountable adjacent symbols has little effect on the channel capacity. The numerical calculation reveals that the negative mean dispersion of the link reduces the interaction of neighbouring pulses.