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

作　　者：钱楷[1] 徐长春[1] 葛强[1] 吴许强[1] 俞本立[1] 

机构地区：[1]安徽大学光电信息获取与控制教育部重点实验室,安徽合肥230039

出　　处：《量子电子学报》2008年第1期114-118,共5页Chinese Journal of Quantum Electronics

基　　金：安徽省优秀青年科技基金(04042045)

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60 dB左右。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.

关 键 词：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 

分 类 号：TN256[电子电信—物理电子学]