Temperature-insensitive fiber Bragg grating strain sensor

A fiber Bragg grating strain sensor, whose reflection bandwidth is insensitive to temperature, is presented. The cross-sectional area is designed to change linearly. Under axial stress, there is a linear relationship between stress and average strain. Experimental results show that when temperature...

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Bibliographic Details
Published inOptoelectronics letters Vol. 8; no. 6; pp. 414 - 417
Main Author 周倩 宁提纲 裴丽 李晶 李超 张婵
Format Journal Article
LanguageEnglish
Published Heidelberg Tianjin University of Technology 01.11.2012
Subjects
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
中心波长
光纤光栅应变传感器
光纤布拉格光栅
反射带宽
波长移动
温度不敏感
线性关系
线性变化
Fiber Bragg Grating Sensor
Good Linear Relationship
Axial Stress
Fiber Bragg Grating
Center Wavelength
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Summary:A fiber Bragg grating strain sensor, whose reflection bandwidth is insensitive to temperature, is presented. The cross-sectional area is designed to change linearly. Under axial stress, there is a linear relationship between stress and average strain. Experimental results show that when temperature increases, reflection center wavelength shifts to longer wavelength, and there is a good linear relationship between center wavelength and temperature. When stress increases, reflection center wavelength shifts to longer wavelength, and reflection bandwidth increases. There are good linear relationships between reflection center wavelength and stress as well as reflection bandwidth and stress.
Bibliography:12-1370/TN
A fiber Bragg grating strain sensor, whose reflection bandwidth is insensitive to temperature, is presented. The cross-sectional area is designed to change linearly. Under axial stress, there is a linear relationship between stress and average strain. Experimental results show that when temperature increases, reflection center wavelength shifts to longer wavelength, and there is a good linear relationship between center wavelength and temperature. When stress increases, reflection center wavelength shifts to longer wavelength, and reflection bandwidth increases. There are good linear relationships between reflection center wavelength and stress as well as reflection bandwidth and stress.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-012-2271-0