Performance Analysis of Super Gaussian Optical Solitons in cubic quintic medium with perturbation

Abstract

The Significance of fibre optic communication is increasing at very high rate in present world due to its huge capacity and capability to meet high speed data link requirements. Like any communication medium, there are also limiting factors in optical communication medium which disturbs the integrity of information. In an optical communication medium, we have dispersion and nonlinear effects. Dispersion is pulse broadening occurs due to different propagation delay faced by different wavelength signals and nonlinear effects are due to the intensity dependent refractive index of optical fiber. These are two major impairments that affect the quality of optical communication link. The various dispersion compensation techniques are used to control loss of data due to dispersion. Optical soliton is a special pulse which provides a revolutionary solution to these problems by providing an exact balance between nonlinear effects and dispersion broadening. Optical soliton travels through optical fiber with zero dispersion effect and maintaining its constant shape. The commercial optical soliton communication systems are expected to be available in few years. A lot of research has been done in conservative optical systems that a system in which has zero loss in medium. The practical optical systems are of dissipative nature as there is a loss in optical medium and are focus of research in recent times. Our work is focussed on Stable Super Gaussian Optical Soliton pulse propagation through optical fiber cable since the modal fields of LASER source is of Super Gaussian profile. We investigated Super Gaussian pulses of order m = 1, 2, 3.We explored the possibility of having stable soliton pulse in a nonlinear optical medium with perturbation that is a dissipative system. We investigated our system with expanded Nonlinear Schrödinger Equations with introduction of perturbation terms .We analysed the effect of fifth order nonlinearity in addition to Kerr nonlinearity on stability of soliton pulses .We find the parameters for which we get stable super Gaussian soliton propagation in cubicquintic medium in case of conservative system . We observed after introducing perturbation in medium we don’t get stable super Gaussian soliton pulse propagation at same parameters as in case of conservative system. Through our investigation, we found the parameter values of Kerr nonlinearity, Quintic nonlinearity and Group velocity dispersion at which we get stable Super Gaussian solitons of order m=1,2,3 in optical medium with perturbation.