Simultaneous measurement of refractive index and temperature based on a core-offset Mach-Zehnder interferometer combined with a fiber Bragg grating

被引:135
|
作者
Yao, Qiqi [1 ]
Meng, Hongyun [1 ]
Wang, Wei [1 ]
Xue, Hongchao [1 ]
Xiong, Rui [1 ]
Huang, Ben [1 ]
Tan, Chunhua [1 ]
Huang, Xuguang [1 ]
机构
[1] S China Normal Univ, Sch Informat & Optoelect Sci & Engn, Lab Nanophoton Funct Mat & Devices, Guangzhou 510006, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Fiber sensor; Refractive index (RI); Core-offset Mach-Zehnder interferometer (MZI); Fiber Bragg grating (FBG); SENSOR;
D O I
10.1016/j.sna.2014.01.017
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 all-fiber sensor for simultaneous measurement of refractive index and temperature in solutions is proposed and demonstrated. The sensing head contains a core-offset Mach-Zehnder interferometer (MZI) and a fiber Bragg grating (FBG). The interference fringe of the MZI and the Bragg wavelength of the FBG would shift with the variation of the ambient refractive index (RI) and/or temperature. The experimental results show that the RI sensitivity and the temperature sensitivity for the sensor are 13.7592 nm/RI and 0.0462 nm/degrees C, respectively. Its low fabrication cost, simple configuration and high sensitivity will have attractive potential applications in chemical and biological sensing. Crown Copyright (C) 2014 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:73 / 77
页数:5
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