Optical Fiber Dispersion Compensation Based on Fiber Bragg Grating

Abstract

In communication Technology the signal needs to travel long distances, through communication media, during this transmission the signal faces many factors which effect it. The chromatic dispersion of fiber is a major factor causing distortion of the light signal, and if not being addressed using accurate compensators it will lead to a significant deterioration in the performance of optical system. By sending signal of 1mw for 10km distance, the result shows that the receive signal without ideal compensation Fiber Bragg is 0.263mw& with ideal compensation Fiber Bragg is 0.98mw also in 50km distance, the result shows that the receive signal without ideal compensation Fiber Bragg is 0.058mw& with ideal compensation Fiber Bragg is 0.92mw,so more in distance 100km, the result shows that the receive signal without ideal compensation Fiber Bragg is 0.018mw& with ideal compensation Fiber Bragg is 0.78mw,In 200km length and when comparing the signal without ideal compensation fiber bragg is 0.015mw & with ideal compensation Fiber Bragg is 0.52mw. This Thesis proposed the ideal compensation Fiber Bragg Grating device with different lengths in optisystem program to enhance the effect of dispersion and losses. The obtained results show good enhancement in transmitted signal characteristics that concerning the dispersion and losses. Also, the advantage of this technique to provide the compensation of dispersion .the results show the extent of the improvement made in network performance. Optisystem program was used to simulate the technique proposed.