基于级联长周期光纤光栅的新颖温度传感器

量子电子学报 , 2005, 22(6): 955-959. doi: 10.3969/j.issn.1007-5461.2005.06.025

基于级联长周期光纤光栅的新颖温度传感器

陈少华 ^1, , 赵启大 ^2, , 刘丽辉 ^3, , 张东生 ^4, , 姚颖 ^5, , 郭澎 ^6, , 闫宇 ^7, , 董孝义 ^8,

1.南开大学现代光学研究所,天津,300071;石油大学(北京)数理系,北京,102249

2.南开大学现代光学研究所,天津,300071

3.南开大学现代光学研究所,天津,300071

4.南开大学现代光学研究所,天津,300071

5.南开大学现代光学研究所,天津,300071

6.南开大学现代光学研究所,天津,300071

7.南开大学现代光学研究所,天津,300071

8.南开大学现代光学研究所,天津,300071

基金项目: 天津市自然科学基金(013800511) 中国科学院资助项目(69977006) 高等学校博士学科点专项科研项目(20020055036)

关键词：光纤光学 , 级联 , 长周期光纤光栅 , 温度传感器

A novel temperature sensor based on the cascaded long-period fiber gratings

设计了一种基于级联长周期光纤光栅(Long period fiber grating)的新颖温度传感器.理论上得到光栅间光纤的长度随温度增加变化时,级联LPG的干涉峰将线性地向长波方向漂移,其消光比亦将呈现线性变化.实验上制作出了基于级联LPG的光纤温度传感器.利用其某一干涉峰的中心波长和消光比测量温度变化时,测量灵敏度分别为0.0353 nm/℃和0.0684 dB/℃.基于级联长周期光纤光栅的温度传感器具有广泛的应用前景.

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