New Simulation and Analysis Backward Pumped Fiber Raman Amplifiers Gain with Minimum Attenuation

摘要

Raman Amplifiers (RAs) are a group of amplifiers which have various applications in optical communications. Data transmission media utilized for RAs are optical fibers operating in nonlinear regime. We present the performances and characteristics of RAs by utilizing a set of coupled differential equations and numerical simulations. The purpose of this paper is to simulate and analyze the parameters affecting on Raman gain for all optical backward pumped fiber Raman amplifier such as fiber type, fiber length, pump power and gain coefficient for enhancement the gain attenuation of fiber Raman amplifier. Three types of fibers with different gain characteristics are used in our numerical simulations. So, the optimum initial values of the pump powers for a system with three pumps are recalculated and optimized again.