Application of Jones matrix in the research of polarization effects of the distributed optic fiber sensor
Application of Jones matrix in the research of polarization effects of the distributed optic fiber sensor
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发表时间：
2007
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通讯作者：
Fu Yu-mei
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作者：
Fu Yu-mei
琼斯矩阵分析方法是分析光纤传感器偏振衰落的有效工具之一，为此建立了基于琼斯矩阵的数学模型，研究了基于Sagnac干涉仪的单根分布式光纤传感器在分布式扰动检测中的偏振效应，仿真结果表明，反射镜作为反射元件可以消除光纤传感器的方向双折射，但不能消除线性双折射，因此提出了一种利用法拉第旋转镜来提高系统抗偏振衰落能力的方法，分析结果表明，该系统不仅能消除线性双折射，而且能消除方向双折射，实验结果表明，该系统具有很好的抗偏振衰落能力，可以将输入光线偏振到任意角度。
An analysis method with Jones Matrix is one of effective tools to analyze polarization fading of the optic fiber sensor.So a mathematic model based on Jones matrix is presented to study the polarization effect of the single distributed optical fiber sensor based on Sagnac interferometer for distributed disturbance detection.And simulation results show that reflecting mirror as reflecting element can remove the orientation birefringence of the optic fiber sensor,but can not remove the linear birefringence.So,a method with a Faraday Rotation Mirror is proposed to improve the anti-polarization fading ability of system.And the analysis result shows that the system can remove not only the linear birefringence,but also the orientation birefringence.Experimental results demonstrate that the system is well against polarization fading and the input light can be linearly polarized to a discretional angle.