Performance Comparison of Pre-, Post-, and Symmetrical Dispersion Compensation for 96 x 40 Gb/s DWDM System using DCF

ABSTRACT This paper investigates the performance of 96 channel DWDM optical communication system at 40 Gb/s based on dispersion compensation using dispersion compensating fiber (DCF). The three dispersion compensating techniques using DCF (pre- DCF, post-DCF and symmetrical-DCF) are investigated & compared. In fiber optic transmission system, distance and capacity of optical signal are always an important factor to improve the performance of the fiber optic transmission system. But some factor deteriorates the performance of all optical system such as chromatic dispersion, polarization mode dispersion, and nonlinear effect. In this paper, the 96 channel WDM optical communication system at 40 Gb/s has been designed and investigated with EDFA as an optical amplifier based on dispersion compensation. Optisystem 7.0 is used for designing and simulation of the proposed system. The results of three dispersion compensation techniques have been compared in the term of bit error rate and Quality factor and it is observed that both post- and symmetrical compensation techniques provide better results for short haul communication as well as long haul communication.