| FBG横向受力反射谱的仿真研究 |
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| 引用本文： | 周恒超,黄富,谢军华.FBG横向受力反射谱的仿真研究[J].苏州科技学院学报(自然科学版),2009,26(3):64-67. |
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| 作者姓名： | 周恒超 黄富 谢军华 |
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| 作者单位： | 广西师范大学物理与电子工程学院,广西,桂林,541004 |
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| 摘 要： | 采用传输矩阵法对FBG横向受力的反射谱进行仿真。当FBG横向受力时，x、y偏振方向的折射率变化不同，引起双折射，其反射谱发生分裂，分裂点随力的变化发生周期性的移动，分裂点的反射率与受力的位置有关，当受力位置越接近光栅中部位置时，反射率越低。
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| 关 键 词： | 双折射 横向受力 分裂点 反射率 |
Simulation Research on Reflection Spectrum of FBG Under Transverse Force |
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| ZHOU Heng-chao,HUANG Fu,XIE Jun-hua.Simulation Research on Reflection Spectrum of FBG Under Transverse Force[J].Journal of University of Science and Technology of Suzhou,2009,26(3):64-67. |
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| Authors: | ZHOU Heng-chao HUANG Fu XIE Jun-hua |
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| Institution: | (College of Physics and Electronic Engineering,Guangxi Normal University,Guilin 541004,China) |
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| Abstract: | The refractive indexes of x and y polarization change when FBG is loaded with transverse force, and consequently, birefringence happens. The transfer matrix method is used to calculate the consequent changes in reflection spectrum. The refection spectrum is split into two main peaks. The split point shifts periodically as the force changes. The reflectivity of the split point is related with the position of the applied force. The closer the stress position is to the middle of FBG,the lower the reflectivity is. |
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| Keywords: | birefringence transverse force split point reflectivity |
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