Abstract: The dynamics of optical solitons with dual-power law nonlinearity, in presence of a stochastic perturbation term, is studied in this paper. The soliton perturbation theory is exploited to obtain the Langevin equation by virtue of which one can conclude that solitons travel down the optical fiber with a fixed mean free velocity.
Keywords: Optical fiber, dual-power law nonlinearity, stochastic preturbation, nonlinear Schrodinger equation, Langevin equation.