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光纤分布式布里渊传感散射谱数据分析模型

肖尚辉 李立

肖尚辉, 李立. 光纤分布式布里渊传感散射谱数据分析模型[J]. 西南交通大学学报, 2009, 22(6): 946-950.
引用本文: 肖尚辉, 李立. 光纤分布式布里渊传感散射谱数据分析模型[J]. 西南交通大学学报, 2009, 22(6): 946-950.
XIAO Shanghui, LI Li. Analytical Model of Brillouin Scattering Spectrum Measurements in Fibre-Optic Distributed Sensing Systems[J]. Journal of Southwest Jiaotong University, 2009, 22(6): 946-950.
Citation: XIAO Shanghui, LI Li. Analytical Model of Brillouin Scattering Spectrum Measurements in Fibre-Optic Distributed Sensing Systems[J]. Journal of Southwest Jiaotong University, 2009, 22(6): 946-950.

光纤分布式布里渊传感散射谱数据分析模型

基金项目: 

国家863高技术研究计划资助项目(2008AA04Z406)

详细信息
    作者简介:

    肖尚辉(1973- ),男,副教授,博士研究生,研究方向为通信与分布式传感信号处理等,E-mail:xiaosh@uestc.edu.cn

Analytical Model of Brillouin Scattering Spectrum Measurements in Fibre-Optic Distributed Sensing Systems

  • 摘要: 分析了当注入普通单模光纤的调制光脉冲宽度接近或小于10 ns时,由调制脉冲光和调制器泄漏连续光共同作用所产生的光纤分布式布里渊散射谱特性.在此基础上,建立了由洛伦兹(Lorentzian)型谱和高斯(Gaussian)型谱线性权重优化组合而成的光纤分布式布里渊传感散射谱数据拟合与参数估计Pseudo-Voigt(P-V)分析模型.利用该P-V模型和Levenberg-Marquardt(L-M)非线性最小二乘算法,对光纤布里渊散射谱采样数据进行了曲线拟合和最优化参数估计.结果表明,与Lorentzian型谱或Gaussian型谱相比,用P-V模型处理传感散射谱数据,数据拟合程度更好,参数估计精度更高.

     

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出版历程
  • 收稿日期:  2008-10-07
  • 刊出日期:  2010-01-20

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