Highly sensitive curvature sensor based on long period fiber grating with alternately splicing multiple single/multimode structure

被引：14
作者：
Hu, Qihao [1 ]
Zhang, Shuo [1 ]
Yang, Wenlei [1 ]
Geng, Tao [1 ]
Sun, Weimin [1 ]
Sun, Cuiting [1 ]
Jin, Xiren [1 ]
Yuan, Libo [1 ]
机构：
[1] Harbin Engn Univ, Key Lab Fiber Integrated Opt, Minist Educ China, Harbin 150001, Heilongjiang, Peoples R China
来源：
OPTICAL FIBER TECHNOLOGY | 2017年 / 37卷
关键词：
Long period fiber grating; Curvature; Splicing; Optical fiber sensor; PHOTONIC CRYSTAL FIBER; TEMPERATURE; INTERFEROMETER; OFFSET;
D O I：
10.1016/j.yofte.2017.07.005
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：
A highly sensitive curvature sensor made of a novel long period fiber grating (LPFG) is presented and experimentally demonstrated. It is constructed by splicing multiple single mode fibers (SMFs) and multi-mode fibers (MMFs) alternately (MS/MA). The measurement result shows that it has a high sensitivity of -22.4 nm/m(-1) in the range from 0.223 m(-1) to 4.358 m(-1). It can measure curvature on all direction due to the symmetric structure. The proposed sensor was also insensitive to the temperature, whose temperature sensitivity was around -0.015 nm/degrees C in the range from 40 degrees C to 200 degrees C. The advantages of high curvature sensitivity and low temperature sensitivity make it has a great potential to measure curvature in practical application with high resolutions.
引用
收藏
页码：69 / 73
页数：5
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