光纤结构对参考光栅温度补偿误差影响  

Influence of fiber structure on the error analysis in reference FBG temperature compensation

作　　者：金秀梅[1] 雷宇[2] 杜彦良 

机构地区：[1]石家庄铁路职业技术学院交通系,石家庄050041 [2]石家庄铁道学院计信分院,石家庄050043 [3]石家庄铁道学院大型结构健康诊断与控制研究所,石家庄050043

出　　处：《功能材料与器件学报》2010年第3期249-254,共6页Journal of Functional Materials and Devices

基　　金：国家自然科学基金资助项目(50278058);河北省自然科学基金资助项目(E2006000389)

摘　　要：光纤光栅的温度传感特性是与其实际结构组成相关的。在现有的参考光栅温度补偿方法中,大都没有考虑温度参考光栅的结构影响问题。本文通过力学分析和数学仿真计算对涂覆、套塑光纤光栅的实际温度响应特性进行了研究。推导得出了与光纤结构相关的光栅温度传感特性公式,并首次给出了光纤结构在参考光栅温度补偿法中引入误差的定量分析方法。本研究有助于根据测量结果对被测结构的应变状态进行更为准确的评价,也为实际应用中合理选择温度参考光栅的涂覆层参数提供了有力的理论依据。The temperature sensing character of fiber Bragg grating （FBG） is influenced by its structure and composition. In the existing temperature compensation methods adopting referenced FBG, the influences of referenced FBG structure were almost not taken into account. By means of mechanical analyses and mathematical emulations, the actual temperature responses of coated FBG and jacketed FBG were studied. The temperature sensing character formulas considering the actual fiber structure were deduced, and the method of quantitative error analysis in reference FBG temperature compensation was also given for the first time. The research is helpful in evaluating the strain state of structure accurately based on measuring results, and also provides theoretical bases for selecting reasonable parameters of FBG coating in practical applications.

关 键 词：光纤光栅 温度 涂覆层 误差分析 

分 类 号：TN253[电子电信—物理电子学]