Hetero-core fiber Bragg grating for simultaneous measurement of strain and bending based on cladding mode ratiometric detection

被引：1
作者：
Sun, An [1 ]
Wu, Zhishen [1 ,2 ]
机构：
[1] Southeast Univ, Int Inst Urban Syst Engn, Nanjing 210096, Jiangsu, Peoples R China
[2] Ibaraki Univ, Dept Urban & Civil Engn, Hitachi, Ibaraki 3168511, Japan
来源：
OPTIK | 2013年 / 124卷 / 20期
关键词：
Fiber optic sensor; Fiber Bragg grating; Strain measurement; Bending measurement; SENSOR;
D O I：
10.1016/j.ijleo.2012.12.051
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A simple but practical method using multimode-single mode fiber Bragg grating (FBG) for cladding mode based simultaneous measurement of strain and bending is proposed and investigated experimentally. Experimental results show that the intensity ratio between cladding mode and FBG resonance of hetero-core FBG show monotonous changes following with the increase of deflection, by which strain and bending discrimination can be achieved by measuring the wavelength shift of FBG resonance and ratiometrically detecting the intensity changes between cladding modes and FBG resonance. (C) 2013 Elsevier GmbH. All rights reserved.
引用
收藏
页码：4206 / 4208
页数：3
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