A Fabry-Perot Interferometer Strain Sensor Based on Concave-Core Photonic Crystal Fiber

被引：69
|
作者：
Tian, Jiajun [1 ]
Jiao, Yuzhu [1 ]
Fu, Qi [1 ]
Ji, Shaobo [1 ]
Li, Zhigang [1 ]
Quan, Mingran [1 ]
Yao, Yong [1 ]
机构：
[1] Harbin Inst Technol, Shenzhen Grad Sch, Sch Elect & Informat Engn, Shenzhen 518055, Guangdong, Peoples R China
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2018年 / 36卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Fabry-Perot interferometer; concave-core photonic crystal fiber; fiber sensor; HIGH-TEMPERATURE; OPTICAL-FIBERS; CAVITY; FORCE;
D O I：
10.1109/JLT.2018.2797104
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 high-sensitivity Fabry-Perot interferometer (FPI) strain sensor based on a concave-core photonic crystal fiber (CPCF) was proposed and demonstrated. The FPI was formed by directly splicing a CPCF to a standard single-mode fiber. The CPCF was fabricated by cleaving a high-numerical-aperture solid-core photonic crystal fiber under axial tension using a traditional fiber cleaver. An FPI strain sensor with a cavity length of 4.85 mu m and a strain sensitivity of 31.58 pm/mu epsilon was successfully produced. The sensor also demonstrated a low temperature sensitivity of 0.653 pm/degrees C, reducing the cross-sensitivity between tensile strain and temperature. The benefits of the proposed sensor include simple fabrication, high strain sensitivity, and low temperature cross-sensitivity, making it attractive for practical applications.
引用
收藏
页码：1952 / 1958
页数：7
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