Investigative Modeling of Symmetric Fiber Bragg Grating as Dispersion Compensation for Optical Transmission System

Dispersion is a serious issue related to the integrity of data transmission in high-speed optical fiber communication systems. Fiber Bragg gratings (FBGs) are among the most important components used to reduce dispersion in these systems. FBGs are simple, and have low-cost filter for wavelength selection, low insertion loss and customized reflection spectrum, and wide bandwidth. This study investigates the optical transmission system performance of a symmetric FBG for dispersion compensation. Transmission scheme simulation is analyzed with different parameters based on an OptiSystem simulator. Symmetric FBG and avalanche photodetector are used to enhance the evaluation of an optical transmission system. Optical fiber length, attenuation coefficient, input power, bit rate, and FBG grating length parameters are also investigated in detail to determine system optimization. The developed simulation design demonstrated high gain, low noise figure, substantial output power, and high Q-Factor for long transmission distance of up to 60 km with 0.2 dB/km attenuation coefficient.