纯石英芯光纤光栅高温应变响应特性  

Response Characteristics of Pure-Quartz-Core Fiber Bragg Grating Under High Temperature Strain

作　　者：丁旭东[1] 张钰民 宋言明[1] 杨润涛[1] 祝连庆[1,2,3] 

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]北京信息科技大学现代测控技术教育部重点实验室,北京100192 [3]北京信息科技大学光电测试技术北京市重点实验室,北京100192

出　　处：《中国激光》2017年第11期169-175,共7页Chinese Journal of Lasers

基　　金：长江学者和创新团队发展计划(IRT1212);北京市教委2015年度创新能力提升计划(TJSHG201510772016)

摘　　要：针对高温条件下应变测量受限问题,对飞秒脉冲激光刻写的Ⅱ型纯石英芯光纤光栅(FBG)的温度及应变特性进行了研究。实验结果表明,纯石英芯FBG在20~1000℃温度范围内表现出良好的线性度,相关系数为0.9996,温度灵敏度为14.07pm/℃;纯石英芯FBG在400℃及以下的高温环境中加载均匀应变时表现出良好的波长稳定性,温度超过500℃时的应变加载导致光纤伸长,引起中心波长的红移。In order to solve problem of the strain measurement limitation under high temperature, the temperature and strain characteristics of the type II pure-quartz-core fiber Bragg grating （FBG） written by femtosecond pulse laser are studied. Experimental results show that when the temperature is ranging from 20 ℃ to ]000 ℃, the pure- quartz-core FBG exhibits good linearity with the correlation coefficient of 0. 9996 and the temperature sensitivity of 14.07 pm/℃. When the temperature is under 400 ℃, the pure-quartz-core FBG exhibits good wavelength stability under the uniform strain. When the temperature is above 500 ℃, the strain loading leads to fiber elongation and the red shift of the center wavelength.

关 键 词：光纤光栅 纯石英芯光纤光栅 应变加载 高温 

分 类 号：TN253[电子电信—物理电子学]