管式光纤光栅高温传感器封装及温度特性  

Steel capillary packaging and high temperature characteristics of fiber grating sensor

作　　者：任越 张钰民 钟国舜[3] 宋言明[1,2] 孟凡勇[1,2] REN Yue;ZHANG Yu-min;ZHONG Guo-shun;SONG Yan-ming;MENG Fan-yong(Beijing Engineering Research Center of Optoelectronic Information and Instruments,Beijing Information Science and Technology University,Beijing 100016,China;Beijing Key Laboratory of Optoelectronic Test Technology,Beijing Information Science and Technology University,Beijing 100192,China;The Eleventh Research Institute of China Electronics Technology Corporation,Beijing 100015,China)

机构地区：[1]北京信息科技大学光电信息与仪器北京市工程研究中心,北京100016 [2]北京信息科技大学光电测试技术与北京市重点实验室,北京100192 [3]中国电子科技集团公司第十一研究所,北京100015

出　　处：《激光与红外》2020年第5期598-601,共4页Laser & Infrared

摘　　要：光纤光栅在高温环境下因丧失涂覆层保护而易断,制作了一种金属管式耐高温光纤光栅温度传感器。使用不锈钢管对飞秒激光刻写的纯石英光纤光栅进行保护封装,在100~450℃温度范围内,对其温度特性进行实验研究,实验结果表明:该传感器的灵敏度系数为12.7 pm/℃,线性相关系数高达0.995,具有很好的重复性。该封装方法简单快捷,封装的传感器稳定性好,机械强度高,可用于工程中的高温测量。Bare fiber grating is easy to break due to the loss of coating protection in high temperature environment.A metal-tube-packaged high temperature resistant fiber grating temperature sensor is proposed.Stainless steel tube was used to package pure-silica fiber gratings inscribed by femtosecond laser.Temperature characteristics were studied in the range of 100~450℃.The experimental results show that the sensitivity coefficient of the sensor is 12.7 pm/℃and the linear fitting coefficient reaches up to 0.995.The sensor displays good repeatability.The method of packaging is simple and convenient.The packaged sensor has good stability and high mechanical strength,and can be used for high temperature measurement in engineering applications.

关 键 词：光纤光栅 封装 高温 灵敏度 重复性 

分 类 号：TN929.11[电子电信—通信与信息系统]