iİnç, MustafaAliyu, Aliyu IsaYusuf, AbdullahBaleanu, Dumitru2020-04-032020-04-0320180030-4026http://hdl.handle.net/20.500.12416/2922In this paper, the sine-Gordon expansion method (SGEM) and the generalized tanh (GTM) methods are employed to find the optical solitary wave solutions to the perturbed nonlinear Schrodinger equation (PNLSE) with Kerr law nonlinearity describing the propagation of optical solitary waves in nonlinear optical fibers. The dark, bright, dark-bright and dark-singular optical solitary waves are retrieved. Additionally, singular solitary waves are also derived as by-products of the integration scheme. Physical interpretations of the obtained results are demonstrated with interesting figures. It is hoped that the results reported in this paper can enrich the nonlinear dynamical behaviors of the PNLSE. (C) 2018 Elsevier GmbH. All rights reserved.eninfo:eu-repo/semantics/closedAccessSine-Gordon Expansion MethodGeneralized Tanh Method Perturbed Nonlinear Schrodinger EquationOptical Solitary WavesArticle16314215110.1016/j.ijleo.2018.02.084