High-sensitive distributed transverse load sensing based on Brillouin dynamic gratings

被引：1
|
作者：
Teng, Lei [1 ]
Tong, Peilin [1 ]
Jiang, Taofei [1 ]
Zhang, Hongying [2 ]
Lu, Zhiwei [1 ]
Chen, Liang [3 ]
Bao, Xiaoyi [3 ]
Dong, Yongkang [1 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Sci & Technol Tunable Laser, Harbin 150001, Peoples R China
[2] Harbin Univ Sci & Technol, Harbin 150080, Peoples R China
[3] Univ Ottawa, Dept Phys, Fiber Opt Grp, Ottawa, ON K1N 6N5, Canada
来源：
24TH INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS | 2015年 / 9634卷
关键词：
transverse load sensing; distributed optical fiber sensing; high-sensitive; Brillouin dynamic grating;
D O I：
10.1117/12.2194317
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report on a high-sensitive distributed transverse load sensing based on Brillouin dynamic gratings (BDGs) for the first time to the best of our knowledge. The sensing mechanism is to measure the transverse-load induced birefringence through exciting and probing a BDG in an elliptical-core polarization-maintaining fiber. A distributed measurement of transverse load is experimentally demonstrated with a 20-cm spatial resolution, and the measurement accuracy is as high as 4.8x10(-4)N/mm, which improves by three orders of magnitude compared with the prior techniques.
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页数：4
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