Ultra-long span optical transmission using bidirectional Raman amplification

Abstract

Gain profile of bidirectional pumped distributed Raman amplification with various forward and backward pump power ratio is investigated. An application for repeaterless ultra-long span transmission on conventional standard fiber is examined. Numerical simulation shows a good transmission performance can be achieved by carefully adjusting forward pump to operate on low pump power ratio. Simulation result and performance analysis of 10 Gb/s RZ-ASK transmission over 400 km distance is presented.