Theoretical analysis on double Rayleigh backscattering noise in optical fibre Raman amplifiers and its suppression
Jiang Wen-Ning (姜文宁), Chen Jian-Ping (陈建平), Li Xin-Wan (李新碗), Shang Tao (尚韬)
State Key Laboratory on Fibre-Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiaotong University, Shanghai 200030, China
Abstract In this paper, amplified double Rayleigh backscattering noise (DRB) in the optical fibre Raman amplifier is analysed. Expressions are presented for both forward pumping and backward pumping schemes. Calculation is performed to show the effective suppression of DRB noise by employing an optical isolator. The optimal position for the isolator is determined and is found to be insensitive to the power levels of the signals and pumps. The results show that a reduction of the DRB noise by almost 2 to 3 orders can be reached.
Received: 20 December 2003
Revised: 09 May 2004
Accepted manuscript online:
Fund: Project partially supported by the National Natural Science Foundation of China (Grant Nos 90204006 and 60377013), the National High Technology Development Program of China (Grant Nos 2001AA122074 and 2002AA122022), the Ministry of Education, China and th
Cite this article:
Jiang Wen-Ning (姜文宁), Chen Jian-Ping (陈建平), Li Xin-Wan (李新碗), Shang Tao (尚韬) Theoretical analysis on double Rayleigh backscattering noise in optical fibre Raman amplifiers and its suppression 2004 Chinese Physics 13 1460
The 260-W coherent beam combining of two compact fibre amplifier chains Wang Xiao-Lin(王小林), Ma Yan-Xing(马阎星), Zhou Pu(周朴), He Bing(何兵), Xue Yu-Hao(薛宇豪), Liu Chi(刘驰), Li Zhen(李震), Xiao Hu(肖虎), Xu Xiao-Jun(许晓军), Zhou Jun(周军), Liu Ze-Jin(刘泽金), and Zhao Yi-Jun(赵伊君) . Chin. Phys. B, 2011, 20(11): 114203.
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