Role of intra and interchannel cross-phase modulation in higher order fiber dispersion management

Nonlinear effects are a major source of impairment in higher order dispersion managed fiber optics links, where both second- and third-order dispersion are compensated over a wide spectral band. We analyze the impact of intrachannel pulse coalescence and interchannel collisions and optimize the span-averaged dispersion in order to reduce cross-phase modulation effects.