Ultrasensitive Temperature Sensor Based on Refractive Index Liquid-Sealed Thin-Core Fiber Modal Interferometers

被引：13
作者：
Xu, Ben [1 ]
Li, Jianqing [1 ]
Li, Yi [2 ]
Xie, Jianglei [2 ]
Dong, Xinyong [2 ]
机构：
[1] Macau Univ Sci & Technol, Fac Informat Technol, Taipa, Peoples R China
[2] China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2014年 / 14卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Fiber sensors; modal interferometer; thin-core fiber; temperature; PHOTONIC CRYSTAL FIBER; OPTICAL-FIBER; SENSITIVITY; GRATINGS; ALCOHOL; STRAIN; TAPERS;
D O I：
10.1109/JSEN.2013.2294012
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：
An ultrasensitive temperature sensor based on a thin-core fiber modal interferometer (TCFMI) is proposed and demonstrated in this paper. After its middle is etched to a thin residual diameter, the TCFMI is sealed in a capillary tube filled with refractive index (RI) liquid. The thermo-optic effect of RI liquid turns the TCFMI into an ultrasensitive temperature sensor with sensitivity up to -22.23 nm/degrees C at 3.2 degrees C. The sensitivity is over 1000-fold that of the bare TCFMI in air. This proposed temperature sensor is also simple, cost-effective, and suitable for a variety of applications.
引用
收藏
页码：1179 / 1184
页数：6
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