一种新颖封装的耐高温光纤Bragg光栅温度传感器  

A Novel Packaged Fiber Bragg Grating Temperature Sensor with High Temperature-resistance

作　　者：禹大宽[1] 乔学光[1] 贾振安[1] 孙安[1] 王敏[1] 

机构地区：[1]西安石油大学光纤传感重点实验室,西安710065

出　　处：《光子学报》2006年第2期232-234,共3页Acta Photonica Sinica

基　　金：国家"863"高技术研究发展计划资助项目(2002AA313150);国家自然科学基金资助项目(69877025;60177028);国家教育部科学技术重点项目(02190);陕西省自然科学基金项目(2000C34);陕西省教育厅科学技术项目(02JK158);西安市科技攻关项目(GG200126)

摘　　要：分析了光纤Bragg光栅的传感原理,将光纤光栅置于细钢管通过一种耐高温胶粘结细钢管两端使光纤光栅在高温下不脱落,并通过细钢管上的中间螺纹给光纤光栅施加预应力,使光纤光栅在温度变化过程中一直保持张紧状态,保证传感器有很好的重复性和良好的线性.实验结果表明该FBG光纤光栅温度传感器灵敏度为0.0252nm/℃,有良好的重复性和线性,温度测量范围达200℃以上,可应用在高温环境测量温度的变化.The principle of fiber Bragg grating sensing is analyzed. Fiber Bragg grating（FBG） is placed in a thin metal tube and a special kind of high temperature-resistance pastern felts with two ends of the metal tube to make FBG not to fall off. Tensile force is put on the FBG by the screw thread in the process of encapsulation, which ensures the FBG tightening in changeable temperatures out of environment. It is found that the structure of FBG temperature sensor has good repeatability and linearity. The experimental results show that the temperature response sensitivity is 0. 0252 nm/℃ ,and the response curve is linear, and the whole measuring range is over 200℃ at least. The FBG temperature sensor can be used in high temperature environment.

关 键 词：光纤BRAGG光栅 温度传感器 耐高温 

分 类 号：TN253[电子电信—物理电子学]