Abstract
This paper obtains optical soliton solution to perturbed nonlinear Schrödinger's equation by modified simple equation method. There are four types of nonlinear fibers studied in this paper. They are Anti-cubic law, Quadratic-cubic law, Cubic-quintic-septic law and Triple-power law. Dark and singular soliton solutions are derived. Additional solutions such as singular periodic solutions also fall out of the integration scheme.
•The optical soliton solution to perturbed nonlinear Schrödinger's equation is obtained by modified simple equation method.•Anti-cubic law, Quadratic-cubic law, Cubic-quintic-septic law and Triple-power law type nonlinear fibers are studied.•Dark and singular soliton solutions are derived.