Abstract:

In order to analyze power conversion efficiency of forward pumped fibre Raman amplifier(FRA), by theoretical derivation method for solving differential coupling equations of forward pumped FRA, the theoretical expression of power conversion efficiency is presented. then, the effect of different parameter on forward pumped FRA’s power conversion efficiency has been detailedly investigated. It is found that: power conversion efficiency will increase when the fibre length or Raman gain coefficient per unit area increase, until it has reached the maximum; initial signal power has a little influence on power conversion efficiency when it is small, and power conversion efficiency increase quickly when initial signal power is larger; the relation between power conversion efficiency and initial pump power is para-curve; power conversion efficiency decrease when the frequency rate of pump and signal is larger.

Key words: optical communication, power conversion efficiency, theoretical derivation, fibre Raman amplifier, forward pumped