Computing Overlapping Signal Influence on Gain Characteristics of EDFA

Abstract

Effect of signal overlapping integral and pump overlapping integral are analytically computed for Erbium Doped Fiber Amplifier (EDFA) for gain profile estimation over a longer range of fiber length. Different ranges of the integral functions are taken into account to achieve constant gain, and results are pictorially displayed when fiber length is over 5 m. Under those values of integral functions, doping ion concentration, absorption cross-section and pump local saturation power are independently tuned for the same objective. Interesting result is obtained which speaks that for 5 m fiber length, gain becomes minimum at any practical range of pump saturation power, though it becomes stabilized.