Investigation of Exact Solutions of Perturbed Nonlinear Schrödinger`s Equation by $expleft(-Phileft(xiright)right)$-Expansion Method

This paper presents an analytic study on optical solitons of a perturbed nonlinear Schr\`{o}dinger`s equation insert ignore into journalissuearticles values(NLSE);. An integration tool that is the $\exp\leftinsert ignore into journalissuearticles values(-\Phi\leftinsert ignore into journalissuearticles values(\xi\right\right);$-expansion approach is used to find exact solutions. As a consequence, hyperbolic, trigonometric and rational function solutions are extracted by this approach.