An optical-fiber bending sensor using two-mode fibers with an off-center core

被引：8
|
作者：
Lisbôa, O. [1 ]
Jen, C.K. [2 ]
机构：
[1] Department of Electrical Engineering, McGill University, Montreal, QC H3A 2A7, Canada
[2] IMI, National Research Council of Canada, Boucherville, QC J4B 6Y4, Canada
来源：
Smart Materials and Structures | 1994年 / 3卷 / 02期
关键词：
D O I：
10.1088/0964-1726/3/2/012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The sensing mechanism of an optical-fiber bending sensor based on the interaction between the frequency-shifted two modes in a two-mode fiber with an off-center core is presented. When the fiber is bent, a tension or a compression field appears in the fiber which causes a preferential net strain due to the asymmetry induced by the off-center core. Both theoretical and experimental results show that the bending in a specific direction can be sensed. Approaches to enhance the sensitivity and the use of this sensor as an accelerometer are also provided. © 1994 IOP Publishing Ltd.
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收藏
页码：164 / 170
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