| 干涉型光纤传感器偏振衰落动态补偿技术 |
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| 引用本文： | 穆姝慧.干涉型光纤传感器偏振衰落动态补偿技术[J].量子电子学报,2008,25(3):375-378. |
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| 作者姓名： | 穆姝慧 |
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| 作者单位： | 安徽农业大学理学院,安徽合肥,230036 |
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| 摘 要： | 为了消除单模光纤制作的光纤传感器常会因外部环境扰动而引起相位衰落和偏振衰落,通过改进传统的马赫-泽德干涉仪,利用高频振荡的PZT结合相位生成载波零差解调电路用来补偿相位衰落,引入一个可随干涉信号的幅值变化旋转的半波片来调整输出的干涉信号,据此可实现偏振衰落的动态补偿.通过理论分析可以得出由偏振衰落造成的信号幅度波动不大于3dB.
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| 关 键 词： | 纤维与波导光学 偏振衰落 干涉仪 动态补偿 半波片 |
| 收稿时间： | 2007/7/18 |
Dynamic compensation technique for polarization fading in interferometric optical fiber sensors |
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| MU Shu-hui.Dynamic compensation technique for polarization fading in interferometric optical fiber sensors[J].Chinese Journal of Quantum Electronics,2008,25(3):375-378. |
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| Authors: | MU Shu-hui |
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| Affiliation: | MU Shu-hui School of Natural Sciences,Anhui Agricultural University,Hefei 230036,China |
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| Abstract: | Interferometric sensors fabricated with single mode fiber are subject to polarization fading and phase fading induced by environmental fluctuations.In order to overcome the restriction,a novel optical fiber sensor based on Mach-Zehnder interferometer is presented,in which a PZT with high frequency and the phase generated carrier homodyne demodulation scheme are used for phase compensation.And a spin controllable half-wave plate rotating with signal amplitude is employed for the dynamic compensation of polar... |
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| Keywords: | fiber and waveguide optics polarization fading interferometer dynamic compensation half-wave plate |
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