Investigating the Gain Characteristics of EDFA and its Application in WDM System

Abstract

This paper presents the gain characteristics of Erbium Doped Fiber Amplifier(EDFA) by investigating the doped fiber length and pump power. It is seen that by varyingdoped fiber length up to 10 m, maximum gain of 41 dB can be achieved at pump power of100 mW and also varying the pump power up to 300 mW, maximum gain of 46 dB can beachieved at doped fiber length of 10 m. Later on, we have implemented the EDFA in WDMsystem and analyzed the performance in terms of BER and Q-Factor by varying transmissiondistance. Due to the implementation of EDFA in WDM system improved BER and Q-Factorare achieved for the system. Maximum Q-Factor of 23.97 and 17.43 are achieved for thedesigned WDM system with and without EDFA respectively.