作者：彭雄辉, 黄安贻, 左浩然

作者单位：武汉理工大学机电工程学院, 湖北 武汉 430070

关键词：温度传感器;光纤光栅;基片;灵敏度

摘要：

光纤光栅是一种新型光学无源器件，现已普遍运用于传感测量方面，但由于裸光纤光栅的灵敏度比较低，需要对其进行增敏封装处理。该文提出一种基片式封装结构，运用铝和殷钢两种不同热膨胀系数的材料，进行过渡配合，当铝受热产生变形，在铝和殷钢之间形成挤压力，这种挤压力减弱横向延伸，增强纵向两端延伸，使得光纤光栅应变增大。通过水浴加热实验对比分析裸光纤光栅、封装的光纤光栅和改进封装后的光纤光栅的温度特性，实验结果表明改进的基片式封装结构温度传感器的线性相关系数为0.996，其灵敏度为33.21 pm/℃，是裸光纤光栅的3.224倍，比单一铝材料封装灵敏度增大6.41 pm/℃，可广泛运用于多种场合的温度测量，具有实际的应用价值。

Substrate type high-sensitivity fiber grating temperature sensor

PENG Xionghui, HUANG Anyi, ZUO Haoran

School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China

Abstract: As a new kind of optical passive device, fiber grating is widely used in sensor measurement. While bare fiber grating is of low sensitivity, thus needs to be strengthened in sensitivity and packaged. This paper put forward a kind of substrate type packaging structure, using two materials(aluminium and invar steel) that have different thermal expansion coefficient for transition fit. When aluminum was deformed due to heating, extrusion pressure formed between aluminium and invar steel, which made the lateral extension weakened and longitudinal extension enhanced, resulting in the increase of the fiber grating strain. Water bath heating test was carried out to compare and analyze the temperature characteristics of bare fiber grating, packaged fiber grating and fiber grating with packaging improved. The results show that the linear correlation of improved substrate type packaging structure temperature sensor is 0.996, and its sensitivity is 33.21 pm/℃, which is 3.224 times that of the bare fiber grating. Compared to the single aluminium material packaging sensitivity, the sensitivity increased by 6.41 pm/℃, thus it can be widely used in a variety of occasions for temperature measurement and has practical value.

Keywords: temperature sensor;fiber grating;substrate;sensitivity

2017, 43(7): 134-138  收稿日期: 2016-10-08;收到修改稿日期: 2016-12-12

基金项目: 国家火炬计划项目（2006GH041236，2010GH041417）

作者简介: 彭雄辉(1989-),男,湖北武汉市人,硕士研究生,专业方向为高精度仪器测量。

参考文献

[1] 甘维兵,王立新. 分布式光纤光栅测温技术在线监测电缆温度[J]. 激光与红外,2011,41(5):577-181.
[2] 徐国权,熊代余. 光纤光栅传感器技术在工程的应用[J].中国光学,2013,6(3):307-313.
[3] JIANG M S, SUI Q M. Application of fiber braggrating sensor network in aluminum reduction tank shell temperature monitoring[J]. Journal of Central South University,2013,20(4):924-930.
[4] 李健苹. 一种基于光纤光栅的应力传感器研究[J]. 重庆师范大学学报(自然科学版),2016,33(4):118-121.
[5] 张智禹. 光纤光栅传感器封装技术的研究[D]. 沈阳:沈阳航空航天大学,2014.
[6] 南秋明,吴皓莹,李盛. 一种光纤光栅振动传感器的金属化封装方法[J]. 焊接学报,2016,37(2):18-20.
[7] 王鹏,赵洪. 光纤光栅无应力毛细铜管封装及温度特性实验[J]. 光电子·激光,2012,23(3):435-438.
[8] 张桂花. 表面黏贴式光纤光栅传感原理及其实验研究[D].西安:西安科技大学,2013.
[9] 张荫民,张学智,刘锋. 管式光纤光栅温度传感器封装与传感特性研究[J]. 电子技术应用,2014,40(10):89-92.
[10] 张桂花,柴敬,李旭娟. 基片式光纤光栅应变传感器的应变传递研究[J]. 激光与光电子学进展,2014(1):1-5.
[11] 禹大宽,乔学光,贾振安,等. 贴片封装的光纤Bragg光栅温度传感器[J]. 仪表技术与传感器,2006(9):4-5,40.
[12] 于秀娟,余有龙,张敏,等. 铜片封装光纤光栅传感器的应变和温度传感特性研究[J]. 光子学报,2006,35(9):1325-1328.
[13] 詹亚歌,吴华,裴金诚,等. 高精度准分布式光纤光栅传感系统的研究[J]. 光电子·激光,2008,19(6):758-762.
[14] 梁雄昌. 光纤Bragg光栅pH值传感器及其增敏研究[D].广州:暨南大学,2014.
[15] 马晓川,周振安. 增敏光纤光栅温度传感器的性能研究[J]. 地球物理学进展,2013,28(5):2768-2772.
[16] 柳智慧,石文玉,张蕊. 光纤光栅传感器封装增敏技术的研究[J]. 光通信技术,2015(1):45-46.
[17] 周智,王倩,郝孝伟,等. 考虑混凝土基体蠕变的FBG传感器应变传递研究[J]. 中国测试,2016,42(5):1-4.