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| 光纤Bragg光栅液氦环境下温度传感特性的研究 | |
| 引用本文： | 张红洁,邓凡平,肖剑,黄国君,王秋良.光纤Bragg光栅液氦环境下温度传感特性的研究[J].光电子．激光,2008,19(5):581-583. |
| 作者姓名： | 张红洁 邓凡平 肖剑 黄国君 王秋良 |
| 作者单位： | 1. 中国科学院应用超导重点实验室,北京,100080;中国科学院电工研究所,北京,100080;中国科学院研究生院,北京,100039 2. 中国科学院力学研究所,北京,100080;中国科学院研究生院,北京,100039 3. 中国科学院力学研究所,北京,100080 4. 中国科学院应用超导重点实验室,北京,100080;中国科学院电工研究所,北京,100080 |
| 摘 要： | 进行了液氦温度(4.2 K)到室温(298 K)温区内光纤Bragg光栅(FBG)温度传感性能的实验研究.重点分析了液氦温度(4.2 K)到液氮温度(77 K)FBG的温度传感特性.实验表明:FBG传感特性与温度相关.在50 K以下,温度响应基本没有变化;50 K-77 K,波长偏移量随温度上升变化不规律;150 K-298 K传感特性近似成线性.对比裸光栅与涂敷光栅,涂敷光栅的温度灵敏度远大于裸光栅的温度灵敏度.选用外加热膨胀系数大的聚合物封装,可以显著提高FBG的温敏系数和线性度. |
| 关 键 词： | 光纤布拉格光栅 液氦温度 温度传感 |
| 文章编号： | 1005-0086(2008)05-0581-03 |
| 修稿时间： | 2007年5月21日 |
Study on temperature response of fiber Bragg grating at liquid helium temperature |
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| ZHANG Hong-jie,DENG Fan-ping,XIAO jian,HUANG Guo-jun,WANG Qiu-liang.Study on temperature response of fiber Bragg grating at liquid helium temperature[J].Journal of Optoelectronics·laser,2008,19(5):581-583. | |
| Authors: | ZHANG Hong-jie DENG Fan-ping XIAO jian HUANG Guo-jun WANG Qiu-liang |
| Affiliation: | ZHANG Hong-jie1,2,4,DENG Fan-ping1,XIAO jian3,HUANG Guo-jun3,WANG Qiu-liang1,2(1.Key Laboratory of Applied Superconductivity,Chinese Academy of Sciences,Beijing 100080,China,2.Institute of Electrical Engineering,3.Institute of Mechanics,4.Graduate School of the Chinese Academy of Sciences,Beijing 100039,China) |
| Abstract: | The temperature response of fiber Bragg grating sensors has been monitored over a temperature range from 4.2 K to 298 K,especially the temperature sensing in liquid helium environment.It is found that the temperature sensitivity of FBG is dependent on temperature.A thermal response is measured to above 50 K.However,the changes are more complicated from 50 K to 77 K.The linear temperature response is found from 150 K to 298 K.Coating material with larger coefficient of thermal expansion can greatly improve t... |
| Keywords: | fiber Bragg grating liquid helium temperature temperature response |
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