Abstract
The intra-channel collision of optical solitons, with non-Kerr law nonlinearities, is studied in this paper by the aid of quasi-particle theory. The Hamiltonian perturbations terms that are considered in this paper are third and fourth order dispersions, self-steepening, nonlinear dispersion and frequency separation. The suppression of soliton-soliton interaction, in presence of these perturbation terms, is acheived. The nonlinearities that are studied in this paper are Kerr, power, parabolic and dual-power laws. The numerical simulations support the quasi-particle theory.