New ansatze for obtaining exact solutions of nonlinear Schrodinger-type equation

We propose two simple anastze that allow us to obtain different analytical solutions for two generalized versions of the nonlinear Schrodinger equation, such as the averaged dispersive-managed fiber system equation and the extended nonlinear Schrodinger equation which describe the femtosecond pulse propagation in monomode optical fiber. Among these solutions we can End solitary wave and periodic wave solutions representing the propagation of different waveforms in nonlinear media.