量子电子学报, 2008, 25 (1): 0114, 网络出版: 2010-06-07
基于部分保偏器件的干涉型光纤传感器
Interferometric fiber-optic sensor based on partial polarization maintaining apparatus
纤维与波导光学 光纤传感器 消偏振衰落 偏振控制器 起偏器 fiber and waveguide optics fiber-optic sensors depolarization-induced fading polarization controller polarizer
摘要
在单模光纤构成的干涉型光纤传感器中，存在偏振衰落问题，将导致干涉效率降低。而为了消偏振衰落采用全保偏器件的光纤传感器成本过于高昂，影响其实用性。以马赫－泽德干涉仪为基础，用反馈信号控制偏振控制器加起偏器的结构消除了偏振衰落，构造了基于部分保偏器件的干涉型光纤传感器。实验得到系统输出信噪比稳定在60dB左右。
Abstract
The polarization-induced fading in fiber-optic sensor causes the decrease of interference efficiency,and the high cost in the use of polarization-maintaining fiber affects the practicability of fiber-optic sensor.Based on the Mach-Zehnder interferometer,an optic-fiber sensor configuration using partial polarization maintaining apparatus and feeding the interference signal back to the polarization controller to eliminate the polarization-induced fading is presented. And the system SNR is about 60 dB.
钱楷, 徐长春, 葛强, 吴许强, 俞本立. 基于部分保偏器件的干涉型光纤传感器[J]. 量子电子学报, 2008, 25(1): 0114. QIAN Kai, XU Chang-chun, GE Qiang, WU Xu-qiang, YU Ben-li. Interferometric fiber-optic sensor based on partial polarization maintaining apparatus[J]. Chinese Journal of Quantum Electronics, 2008, 25(1): 0114.
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