基于法布里-珀罗干涉仪和光纤布拉格光栅的双参量光纤传感器

J4 ›› 2016, Vol. 33 ›› Issue (5): 604-609.

基于法布里-珀罗干涉仪和光纤布拉格光栅的双参量光纤传感器

王坤¹,俞本立²

安徽大学物理与材料科学学院，安徽合肥 230601

收稿日期:2015-05-13 修回日期:2015-06-15 出版日期:2016-09-28 发布日期:2016-09-28
通讯作者: 俞本立（1963- ）安徽五河人，教授，博士生导师，主要研究方向为光电技术和光纤传感。 E-mail:benliyu@ahu.edu.cn
基金资助:
国家自然科学基金(61307098)、安徽省科技厅科技攻关计划项目(1310115197)

Dual-parameter fober sensors based on Fabry-Perot interference and fiber Bragg grating

WANG Kun， YU Benli

School of Physics and Materials Science，Anhui University， Hefei 230601，China

Received:2015-05-13 Revised:2015-06-15 Published:2016-09-28 Online:2016-09-28

摘要/Abstract

摘要： 提出了一种结构紧凑的基于法布里-珀罗干涉仪（FPI）和光纤布拉格光栅（FBG）的双参量光纤传感器，其可实现对应变和温度的同时测量。所制作的FPI是通过将一段端面被腐蚀过的多模光纤（MMF）与一小段光敏光纤（PSF）熔接而形成的。PSF的平整端面作为FPI的一个反射面，FBG被刻写在PSF中。实验测得FPI和FBG对于应变的灵敏度分别为 8.63pm/με和1.11 pm/με，对温度的灵敏度分别为和-1.60 pm/℃和9.75pm/℃。由于FBG和FPI对于应变和温度分别有不同的灵敏度，所以它们组合起来可以实现对双参量的同时测量。实验测得传感器同时进行应变和温度测量的最大误差分别为6.72με和0.98℃。

关键词: 纤维与波导光学；应变和温度测量；法布里-珀罗干涉仪；光纤布拉格光栅

Abstract: A compact fiber-optic sensor based on Fabry-Perot interference(FPI) and fiber Bragg grating (FBG) for simultaneous measurement of strain and temperature is proposed. The FPI we made is fabricated by fusion-splicing a length of end-face-etched multimode fiber (MMF) and a small section of photosensitive fiber (PSF).The flat end face of the PSF acts as one of the two reflectors of the FPI, and the FBG is written in the PSF. The strain sensitivities of FPI and FBG are 8.63 pm/με and 1.11 pm/με, and the temperature sensitivities of them are -1.60 pm/℃ and 9.75 pm/℃, respectively. As FBG and FPI have different sensitivities to strain and temperature, they can be utilized together for simultaneous measurement of dual parameters. The maximal errors in our test are 6.72με and 0.98℃ for strain and temperature measurements of the sensor, respectively.

Key words: fiber and waveguide optics；strain and temperature measurement；fabry-Perot interference；fiber Bragg grating

中图分类号:

TN216

王坤俞本立. 基于法布里-珀罗干涉仪和光纤布拉格光栅的双参量光纤传感器[J]. J4, 2016, 33(5): 604-609.

WANG Kun， YU Benli. Dual-parameter fober sensors based on Fabry-Perot interference and fiber Bragg grating[J]. J4, 2016, 33(5): 604-609.

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