| Theoretical analysis on double Rayleigh backscattering noise in optical fibreRaman amplifiers and its suppression |
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| 引用本文： | 姜文宁,陈建平,李新碗,尚韬.Theoretical analysis on double Rayleigh backscattering noise in optical fibreRaman amplifiers and its suppression[J].中国物理 B,2004,13(9):1460-1463. |
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| 作者姓名： | 姜文宁 陈建平 李新碗 尚韬 |
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| 作者单位： | State Key Laboratory on Fibre-Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiaotong University, Shanghai 200030, China |
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| 基金项目： | 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 the Science and Technology Committee of Shanghai Municipal Government (Grant Nos 012261003122, 022261001 and 036105009). |
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| 摘 要： | 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.
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| 关 键 词： | 光纤拉曼光放大器 双瑞利背向散射 DRB噪声 光绝缘体 |
| 收稿时间： | 2003-12-20 |
| 修稿时间： | 5/9/2004 12:00:00 AM |
Theoretical analysis on double Rayleigh backscattering noise in optical fibre Raman amplifiers and its suppression |
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| Jiang Wen-Ning,Chen Jian-Ping,Li Xin-Wan and Shang Tao.Theoretical analysis on double Rayleigh backscattering noise in optical fibre Raman amplifiers and its suppression[J].Chinese Physics B,2004,13(9):1460-1463. |
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| Authors: | Jiang Wen-Ning Chen Jian-Ping Li Xin-Wan and Shang Tao |
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| Affiliation: | State Key Laboratory on Fibre-Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiaotong University, Shanghai 200030, China |
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| 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. |
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| Keywords: | optical fibre Raman amplifier double Rayleigh backscattering |
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