High-Sensitivity Fabry-Perot Interferometer High-Temperature Fiber Sensor Based on Vernier Effect

被引：55
作者：
Lei, Xueqin [1 ]
Dong, Xiaopeng [1 ]
机构：
[1] Xiamen Univ, Inst Lightwave Technol, Sch Elect Sci & Engn, Xiamen 361005, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2020年 / 20卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Fabry-Perot interferometer; high temperature measurement; photonic crystal fiber (PCF); Vernier effect; PHOTONIC CRYSTAL FIBER; TIP SENSOR; LOOP;
D O I：
10.1109/JSEN.2020.2970579
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 novel sensitivity-enhanced intrinsic fiber Fabry-Perot interferometer (IFFPI) high temperature sensor based on a hollow-core photonic crystal fiber (HC-PCF) and modified Vernier effect is proposed and experimentally demonstrated. The compact all fiber IFFPIs are easily constructed by splicing one end of the HC-PCF to a leading single mode fiber (SMF) and applying an arc at the other end of the HC-PCF to form a pure silica tip. The Vernier effect is formed by three beams of lights reflected from the SMF-PCF splicing joint, and the two air/glass interfaces on the ends of the collapsed HC-PCF tip, respectively. This Vernier effect based fiber sensor can stand with high temperature up to 1200 degrees C, in this work, and experimental results exhibit good linearity, stability and repeatability. The temperature sensitivity can be further enhanced by reducing length of pure silica tip-that is, simply optimizing the discharge time and intensity. The fabrication of the sensitivity-enhanced IFFPI is straightforward, reproducible and low cost, which shows a potential for practical applications in various industrial processes.
引用
收藏
页码：5292 / 5297
页数：6
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