Chirp-free bright optical solitons and conservation laws for complex Ginzburg-Landau equation with three nonlinear forms

This paper obtains chirp-free bright optical soliton solutions to the complex Ginzburg-Landau equation by traveling wave hypothesis and semi-inverse variational principle. Three forms of nonlinearity are associated with the model. They are quadratic-cubic form, parabolic law and dual-power law. The corresponding conservation laws are also included.