Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (10): 44-47.

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Gain Characteristics of Forward-Pumped Raman Fibre Amplifier

Deng Hua-qiu  Long Qing-yun  Wu Jun-fang   

  1. College of Physical Science and Technology,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-12-28 Online:2005-10-25 Published:2005-10-25
  • Contact: 邓华秋(1963-)，男，博士，副教授，主要从事光纤通信、数字图像处理方面的研究 E-mail:eehqdeng@scut.edu.cn
  • About author:邓华秋(1963-)，男，博士，副教授，主要从事光纤通信、数字图像处理方面的研究

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Abstract:

In order to analyze the effects of the parameters of the forward-pumped Raman fibre amplifier on the gain,this paper presents the analytical solution to the output signal and the theoretical expression of the gain by solving the forward-pumped coupling equations of the amplifier.Then,the efects of the fibre length,the initial signal power,the initial pump power,the effective fibre area and the Raman gain coefficient on the gain of the amplifier are investigated in the condition that the parameters are all of their typical values.Some of the findings are consistent with the experimental results in the literature.It is finally concluded that the gain characteristics of the amplitier can be optimized based on the different efects of the parameters,thus improving the gain as well as amplifying the performan ce of the amplifier.

Key words: forw ard pumping, Raman fibre amplifier, stimulated Raman scattering, gain