双光纤布拉格光栅温度和应变传感研究  

Temperature and Strain-Sensed Researches of Double Fiber Bragg Gratings

作　　者：张祝林[1] 杨振坤[1] 伍辉华[1] 陈健[1] 李文宏[1] 

机构地区：[1]西安交通大学电气工程学院,西安710049

出　　处：《西安交通大学学报》2004年第6期607-610,共4页Journal of Xi'an Jiaotong University

摘　　要：在对光纤布拉格光栅温度和应变传感原理分析的基础上,构建了一种易于实用化的,能够实现温度和应变双参量同时区分测量的双光纤布拉格光栅传感器结构,并建立了其传感模型,从而解决了光纤布拉格光栅传感器进一步发展的关键问题,即温度、应变交叉敏感问题.最后,在现有的实验条件下设计了该模型的传感实验系统.实验结果表明,当被测温度变化在10～65℃,轴向应变在50με～350με范围内时,测量结果与实际值很接近,从而证明了双光纤布拉格光栅结构传感模型的正确性,并为其深入研究和实用化奠定了一定的理论和实验基础.Based on a detailed theoretical study for the temperature and strain's sensing mechanism of fiber Bragg grating (FBG), a double-FBG sensor structure for simultaneous measurement of temperature and strain was constructed and a sensing model of the structure was built. The model resolves the pivotal problem of fiber Bragg grating's development, namely temperature and strain's cross sensitivity. In addition, a self-designed FBG sensing experiment system of this model was described. The result of the experiment indicates that measured data of temperature and strain are close to the real values when they vary separately from 10 to 65°C and from 50 μΕ to 350 μΕ. Thus the validity of this double fiber Bragg grating's sense model is confirmed. The model lays both theoretical and experimental foundations for the study and application of FBG sensor.

关 键 词：光纤布拉格光栅 传感器 温度 应变 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]