Combining Two Types of Gratings for Simultaneous Strain and Temperature Measurement

被引：54
|
作者：
Zeng, Hongyi [1 ]
Geng, Tao [1 ]
Yang, Wenlei [1 ]
An, Maowei [1 ]
Li, Jian [1 ]
Yang, Fan [1 ]
Yuan, Libo [1 ]
机构：
[1] Harbin Engn Univ, Key Lab In Fiber Integrated Opt, Minist Educ China, Harbin 150001, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2016年 / 28卷 / 04期
关键词：
LPFG; tapered; CO2-laser-notched; simultaneous measurement; strain; temperature; PERIOD FIBER GRATINGS; PHOTONIC CRYSTAL FIBER; FABRICATION; SENSITIVITY; WRITTEN; SENSORS; SINGLE;
D O I：
10.1109/LPT.2015.2499378
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new optical fiber sensor made of tapered and CO2-laser-notched long-period fiber gratings (LPFGs) is proposed for the simultaneous measurement of strain and temperature. Experiments are run to verify the feasibility of using the proposed sensor for the simultaneous measurement of strain and temperature. Experimental results indicate that after the two LPFGs are connected with each other, the sensitivity of CO2-LPFG to strain deceases from 1.7 to 0 pm/mu e, and the sensitivity of the tapered LPFG remains unchanged; it is -1.4 and -1.5 pm/mu e. The sensitivity of resonance wavelength 1280, 1412, and 1545 nm to temperature are 80 pm/degrees C, 67 pm/degrees C, and 69 pm/degrees C. Simultaneous strain and temperature experiments prove the stability of proposed sensor. It is therefore strongly believed that the proposed sensor can be used to achieve simultaneous measurement of strain and temperature.
引用
收藏
页码：477 / 480
页数：4
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