Investigation of exact solutions of nonlinear schrodinger equation perturned by exponent expansion method

Optical soliton molecules form the most important carrier bits in telecommunication engineering. A variety of models are available to address this dynamics in the context of optical fibers. In this study, the dynamics of optical solitons in negative-index materials with non-Kerr nonlinearity and third-order dispersion is investigated. Four types of nonlinearities are considered. They are Kerr law, power law, parabolic law and dual-power law. With the help of exp-function method, hyperbolic, trigonometric and plane wave solutions to the governing model are recovered. Optical solitons in birefringent fibers is also displayed in this study. The same integration approach is adopted to reveal singular soliton solutions along with other solutions that fall out as a by product of this scheme. Moreover, the special cases of cascaded systems and Thirring solitons are examined.