Fabrication of Phase-Shifted Long-Period Fiber Grating and Its Application to Strain Measurement

被引:24
|
作者
Wang, Peng [1 ]
Xian, Lunlun [1 ]
Li, Hongpu [2 ]
机构
[1] Shizuoka Univ, Grad Sch Sci & Technol, Shizuoka 4368650, Japan
[2] Shizuoka Univ, Fac Engn, Shizuoka 4368650, Japan
基金
日本学术振兴会;
关键词
Long-period fiber grating; phase-shifted grating; strain sensor; TEMPERATURE-MEASUREMENT; DESIGN; SENSOR;
D O I
10.1109/LPT.2014.2385067
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
Several kinds of phase-shifted long-period gratings (LPGs) have been fabricated using a high-repetition-rate CO2 laser, where both the grating and the inserted phase shift are simultaneously produced in a commonly used single-mode fiber. Furthermore, using one of the fabricated phase-shifted LPGs, a temperature-insensitive sensor that allows for large axial strain measurement with a value up to 7600 mu epsilon, is proposed and first demonstrated. Measurement accuracy for the strain ranging from 340 to 7600 mu epsilon is estimated to be +/- 30 mu epsilon, while the temperature is changed in a range of 20 degrees C-140 degrees C.
引用
收藏
页码:557 / 560
页数:4
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