Chinese Optics Letters, 2006, 4 (8): 446, Published Online: Aug. 31, 2006  

Numerical analysis of Raman amplification and optical signal-to-noise ratio in a photonic crystal fiber

Author Affiliations
The State Key Laboratory on Fiber-Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, Shanghai 200030
Abstract
A numerical design on the triangular photonic crystal fiber (PCF) based backward multi-pump Raman amplifier is presented. It is demonstrated that high flat Raman gain can be reached based on PCF. Influences of different geometric parameters and germanium doping concentrations on the Raman net gain, amplified spontaneous emission (ASE) noise and double Rayleigh backscattering (DRBS) of the signal have been analyzed. For optimizing crystal fiber Raman amplifier (FRA), there is tradeoff between the geometric parameter and germanium doping concentration of triangular PCF. The results show that PCF is an appropriate candidate for high gain Raman amplifiers.

Tao Shang, Jianping Chen, Xinwan Li, Junhe Zhou. Numerical analysis of Raman amplification and optical signal-to-noise ratio in a photonic crystal fiber[J]. Chinese Optics Letters, 2006, 4(8): 446.

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