Title :
Wide band flat gain Raman amplifier for DWDM communication systems
Author :
Samra, A.S. ; Harb, H. A M
Author_Institution :
Dept. of Electron. & Commun., Mansoura Univ., Mansoura
Abstract :
Raman amplifier has been found to be an attractive candidate for optical dense wavelength division multiplexing (DWDM) system. This paper investigates Raman gain with forward pumping using only four pumping lasers for DWDM system. Considering the threshold power for various pumps, the composite working band and the Amplified Spontaneous Emission (ASE) noise are also estimated using the actual band model. Then, we investigate the use of coaxial fiber with single pump laser, which gives reasonably flat Raman gain spectrum. Then, we propose Raman amplifier with two pumps using coaxial fiber, showing that, such Raman amplifier can cover the C and L bands with low ripples. We conclude that, decreasing the number of pumps, also decreases the ASE.
Keywords :
optical fibre amplifiers; superradiance; wavelength division multiplexing; wideband amplifiers; DWDM communication systems; amplified spontaneous emission noise; coaxial fiber; optical dense wavelength division multiplexing system; wideband flat gain Raman amplifier; Coaxial components; Fiber lasers; Laser excitation; Laser modes; Laser noise; Optical amplifiers; Optical noise; Pump lasers; Stimulated emission; Wavelength division multiplexing; Actual band model; Amplified spontaneous emission; Dispersion compensating fiber; Raman Amplification;
Conference_Titel :
Wireless and Optical Communications Networks, 2009. WOCN '09. IFIP International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-4704-6
Electronic_ISBN :
978-1-4244-3474-9
DOI :
10.1109/WOCN.2009.5010542
