Optical bright and dark soliton solutions for coupled nonlinear Schrodinger (CNLS) equations by the variational iteration method

This paper studies optical bright and dark soliton solutions for coupled nonlinear Schrodinger (CNLS) equations in the anomalous and dispersive regimes. We operate the variational iteration method (VIM) to derive a set of diverse types of bright and dark optical soliton solutions. The VIM gives the solution in a rapidly convergent series without any need for physical restrictions or changing the nonlinearity issue. The presented analysis shows the pertinent features of the VIM method in handling nonlinear evolution equations.