Performance enhancement of optical communication systems through FBG dispersion compensation

The need for high capacity optical networks has led to the stronger drive for efficient techniques to counteract the impairments of the optical transmission medium in Dense Wavelength Division Multiplexing (DWDM) systems. Some of main factors that set the limit of transmission distance and affect the quality of signal in a high-speed optical communication link are the chromatic dispersion and attenuation. In this paper, the design and performance optimization of a hybrid DWDM optical communication system have been presented that uses Fiber Bragg Grating (FBG) for chromatic dispersion compensation and Erbium-Doped Fiber Amplifiers (EDFAs) for optical power enhancement. Multiple DWDM channels (25 Gb/s and 100 GHz channel spacing) are transmitted through a 50 km Single-Mode Fiber (SMF) link and the designed system is implemented and analyzed in the OptiSystem. The ideal WDM multiplexer/demultiplexer is used to enable wavelength multiplexing, and optical spectrum analyzers, BER analyzers and eye diagram analyzers are employed to evaluate system performance.