Optical Solitons for Ultrashort Pulses in Nano Fibers

The nonlinear Schrodinger equation (NLSE) is the governing equation for ultrashort pulse transmission in a nonlinear nano optical fibers. In this paper, the NLSE equation has been solved by the ansatz to celebrate the bright and dark optical solitons. Since the soliton, in which the shape and speed can remain constant during propagation, is expected that transmission of nonlinear ultrashort pulses in optical fibers can effectively control the dispersion. So the bright and dark optical solitons in the proper dispersion management systems are discussed, along with their constraint conditions.