High-sensitivity distributed transverse load sensor with an elliptical-core fiber based on Brillouin dynamic gratings

被引：31
作者：
Dong, Yongkang [1 ]
Teng, Lei [1 ]
Tong, Peilin [1 ]
Jiang, Taofei [1 ]
Zhang, Hongying [2 ]
Zhu, Tao [3 ]
Chen, Liang [4 ]
Bao, Xiaoyi [4 ]
Lu, Zhiwei [1 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Sci & Technol Tunable Laser, Harbin 150001, Peoples R China
[2] Harbin Univ Sci & Technol, Inst Photon & Opt Fiber Technol, Harbin 150080, Peoples R China
[3] Chongqing Univ, Key Lab Optoelect Technol & Syst, Chongqing 400044, Peoples R China
[4] Univ Ottawa, Dept Phys, Fiber Opt Grp, Ottawa, ON K1N 6N5, Canada
来源：
OPTICS LETTERS | 2015年 / 40卷 / 21期
基金：
中国国家自然科学基金;
关键词：
BRAGG GRATINGS; STRESS;
D O I：
10.1364/OL.40.005003
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A high-sensitivity distributed transverse load sensor based on Brillouin dynamic gratings (BDGs) is proposed and demonstrated experimentally for the first time, to the best of our knowledge. The principle is to measure the transverse-load-induced birefringence change through exciting and probing a BDG in an elliptical-core polarization-maintaining fiber. A distributed measurement of transverse load is demonstrated experimentally using a 10 m sensing fiber, which features high sensitivity to a transverse load with a measurement accuracy as high as 0.8 x 10(-3) N/mm at a 20 cm spatial resolution. (C) 2015 Optical Society of America
引用
收藏
页码：5003 / 5006
页数：4
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