Two-dimensional bend sensing with a cantilever-mounted FBG

被引：17

作者：

Jin, L ^{[1
]}

Zhang, WG ^{[1
]}

Li, J ^{[1
]}

Zhang, H ^{[1
]}

Liu, B ^{[1
]}

Tu, QC ^{[1
]}

Kai, GY ^{[1
]}

Dong, XY ^{[1
]}

机构：

[1] Nankai Univ, Inst Modern Opt, Key Lab Optoelect Informat Sci & Technol, Minist Educ, Tianjin 300071, Peoples R China

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2006年 / 17卷 / 01期

关键词：

bend sensing; fibre Bragg grating; fibre optic sensor; simultaneous measurement; two-dimensional sensing;

D O I：

10.1088/0957-0233/17/1/027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A technique for simultaneous measurement of a 2D bend by using a cantilever-mounted fibre Bragg grating (FBG) is experimentally demonstrated. The value of the two-dimensional deflections is acquired from the central wavelength and chirp bandwidth of the reflection spectrum via the inverse sensitivity matrix. Moreover, an interrogation system with an intensity modulator and a Mach-Zehnder interferometer structure is demonstrated, not only providing wavelength information, but also distinguishing the direction of the horizontal deflection. The measured vertical deflection sensitivity reaches 0.135 nm mm(-1) and its horizontal counterparts along the positive and negative axes achieve 0.602 nm mm(-1) and -0.572 nm mm(-1) respectively.

引用

收藏

页码：168 / 172

页数：5

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