A Transverse Load Sensor With Ultra-Sensitivity Employing Vernier-Effect Improved Parallel-Structured Fiber-Optic Fabry-Perot Interferometer

被引：34
作者：
Wu, Yongfeng [1 ]
Liu, Bo [1 ]
Wu, Jing [1 ]
Zhao, Lilong [1 ]
Su, Tingting [1 ]
Mao, Yaya [1 ]
Nan, Tong [1 ]
Wang, Jin [2 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Inst Optoelect, Nanjing 210044, Peoples R China
[2] Nanjing Univ Informat Sci & Technol, Sch Elect & Informat Engn, Nanjing 210044, Peoples R China
来源：
IEEE ACCESS | 2019年 / 7卷
基金：
中国国家自然科学基金;
关键词：
Fiber-optic; Fabry-Perot interferometer; ultrasensitive; transverse load; Vernier-effect; PRESSURE SENSOR; STRAIN; CAVITY; TEMPERATURE;
D O I：
10.1109/ACCESS.2019.2933561
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The parallel structured fiber-optic Fabry-Perot interferometer (FPI) is theoretically proposed and experimentally demonstrated for transverse load measurement based on Vernier-effect. This kind of sensor consists of a hollow microsphere cavity fiber-optic FPI for sensing function and an air cavity for reference, both of which are parallel connected by a 3 dB optical fiber coupler with the functionality of Vernier-effect. Experimental results indicate that the proposed sensor can provide a high transverse load sensitivity of -3.75 nm/N, which is 3.4 times higher than single hollow microsphere cavity FPI. Moreover, with the excellent features of low cost, easy fabrication, and stable sensing, the parallel structured FPIs proposed will provide a new vision for high sensitivity transverse load sensing.
引用
收藏
页码：120297 / 120303
页数：7
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