基于偏振分束器的保偏型光纤传感器解调方法  

Polarization Maintaining Fiber Grating Sensor Demodulation Method Based on Polarizing Beam Splitters

作　　者：张淑芳[1] 张锦龙[1] 毛海涛[1,2] 周德让[1] 

机构地区：[1]河南大学物理与电子学院,河南开封475004 [2]河南大学民生学院,河南开封475004

出　　处：《仪表技术与传感器》2014年第1期11-13,共3页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(No.60677003)

摘　　要：为提高光纤传感器的解调技术,提出一种采用保偏光纤(Polarization maintaining fiber,PMF)和光偏振分束器(polarizing beam splitters,PBS)的光纤光栅传感器解调方案。利用PBS的偏振分束功能和PMF偏振模式间干涉原理,建立理论模型,运用矩阵光学原理分析光路传输过程,进行数值仿真和实验验证。搭建光路系统并设计适用各种结构参数的电路模块和基于Matlab的参数测定软件。实验及仿真结果均与理论分析一致。It proposed a demodulation scheme based on polarizing beam splitters （PBS）and polarization-maintaining fiber （PMF） to improve the demodulation technology of optic sensors.Using the polarization splitting function of PBS and principle of PMF polarization inter-modal interference,it established the theoretic model.The light path transmission process was analyzed by the matrix optics theory.Then,it processed the numeric emulations and experimental verifications.Last,it established the light path system and designed the circuit model applied to various fabric parameters and the parameter metrical software based on Matlab.The experimental results are accordant with the theoretic analysis and the demodulation results.

关 键 词：传感解调 偏振干涉 偏振分束器 

分 类 号：TN29[电子电信—物理电子学]