Interferometric fiber-optic bending/nano-displacement sensor using plastic dual-core fiber

被引：47
作者：
Qu, H. [1 ]
Yan, G. F. [1 ,2 ]
Skorobogatiy, M. [1 ]
机构：
[1] Ecole Polytech, Montreal, PQ H3C 3A7, Canada
[2] Zhejiang Univ, Ctr Opt & Electromagnet Res, Hangzhou 310058, Zhejiang, Peoples R China
来源：
OPTICS LETTERS | 2014年 / 39卷 / 16期
关键词：
STRAIN; CURVATURE; GRATINGS;
D O I：
10.1364/OL.39.004835
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate an interferometric fiber-optic bending/nano-displacement sensor based on a plastic dual-core fiber. The light coupled into the two fiber cores is first guided along the fiber, and then reflected by the mirror coated at the fiber end. Reflected light coming out of the fiber produces interference that shifts as the fiber bends. The interference shift is interrogated using a slit and a photodetector. The resolution of our sensor is similar to 3 x 10(-4) m(-1) for sensing the bending curvature, and similar to 70 nm for sensing the displacement. (C) 2014 Optical Society of America
引用
收藏
页码：4835 / 4838
页数：4
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