Perturbation of solitons with non-Kerr law nonlinearity

This paper studies solitons and its perturbations with non-Kerr law nonlinearity that is governed by the generalized nonlinear Schrödingerʹs equation. The parameter dynamics of the soliton is obtained using the soliton perturbation theory. A couple of special cases of the non-Kerr law nonlinearity are considered as examples with the nonlinear damping type perturbation.