Split Step Fourier Method Application, Reducing Pulse Broadening Effect for a Single Mode Optical Fiber

Abstract

An increasing needs of a high bit rate transmission systems encourage the communication engineers to design a better system. In practical, a 40 Gbps rate of transmission can only be achieved in a fiber optic system. Although this performance can be achieved through this media, the disturbances such as dispersion and non linearity which can be manifested into a pulse broadening may occur during the transmission system. Since this phenomenonis caused by the Group Velocity Dispersion (GVD) in a high bit rate fiber optic, a careful consideration on the effectiveness of the systems is needed. A numerical approach in this paper used a novel analysis method of high order NLSE with a Split Step Fourier Method. The aims of this proposed model is to find a suitable value of the dispersion constants in terms of and which are assumed to be a part of second and third order dispersion respectively. To reduce the effect of pulse broadening, this paper proposed an novel approach through the value of pulse broadening ratio and intensity. Consequently, it is found that a negative pre-chirping in the averaged value of 1.8944 and C=-2 have the best result among others in a Gaussian signal simulation.