Optical fiber liquid refractive index sensor based on Fresnel reflection of anti-Stokes light

被引：4
作者：
Wang, Dong [1 ]
Tong, Jingkuo [1 ]
Jin, Baoquan [1 ]
Wang, Yu [1 ]
Zhang, Mingjiang [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Phys & Optoelect, Key Lab Adv Transducers & Intelligent Control Sys, Minist Educ & Shanxi Prov, 79 West Main St, Yingze 030024, Peoples R China
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2018年 / 279卷
基金：
中国国家自然科学基金;
关键词：
Refractive index sensing; Optical remote sensor; Fresnel reflection; Raman anti-Stokes light; REFRACTOMETER; TEMPERATURE; SYSTEM; REMOTE;
D O I：
10.1016/j.sna.2018.06.015
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 optical fiber liquid refractive index (RI) sensing method based on Fresnel reflection of Raman anti Stokes light is firstly proposed and demonstrated. A specially fabricated sensor head formed by a fiber end and a fiber coil is designed, and they are used to sense RI and temperature respectively. Experimental results show that the sensor has a RI resolution up to 0.0002 RIU (Refractive Index Unit) and a temperature accuracy of +/- 1 degrees C within a measurement range of 10 km. The performance confirms that the sensor has potential to act as a remote refractometer and thermometer. Its case of simple fabrication of using only one multimode fiber offers attractive remote RI and temperature sensing applications involving chemical and biological fields. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：140 / 144
页数：5
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