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

页码：1179 / 1184

页数：6

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