Optimal Design of Flat – Gain Wide-Band Discrete Raman Amplifiers Year: 2009 Volume: 3 Issue: 6 450 - 452 Pages Authors: Banaz Omer Rasheed Parexan M. Aljaff Abstract: In this paper, a wide band gain–flattened discrete Raman amplifiers utilizing four optimum pump wavelengths is demonstrated. Keywords: Fiber Raman Amplifiers Optimization WaveLength Division Multiplexing.