Multisoliton interactions and wavelength-division multiplexing

Abstract

Multisoliton interactions are studied with an asymptotic expansion of the N-soliton solution in the limit of large frequency separation between the channels. In this limit the spectral distortion is small and the peak frequency shift of a channel is the sum of pairwise shifts as a result of interaction with other channels. These results, derived for collisions among an arbitrary number of channels, will be useful in estimating the limits on the minimum channel spacings and packet sizes for a wavelength-multiplexed optical communication system.