All fiber sensor based on Mach-Zehnder interferometer for simultaneous measurement of temperature and refractive index

被引：12
|
作者：
Cao Y. [1 ]
Zhao C. [1 ]
Tong Z.-R. [1 ]
机构：
[1] Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Computer and Communication Engineering, Tianjin University of Technology, Tianjin
来源：
Optoelectronics Letters | 2015年 / 11卷 / 06期
基金：
中国国家自然科学基金;
关键词：
A;
D O I：
10.1007/s11801-015-5175-y
中图分类号：
学科分类号：
摘要：
In this paper, we propose and experimentally demonstrate a compact optical fiber sensor based on a Mach-Zehnder interferometer (MZI) cascaded with fiber Bragg grating (FBG) for simultaneous measurement of refractive index (RI) and temperature. In order to get a proper spectrum, we discuss the effects of different structure parameters of MZI. Using the resonant wavelength of the FBG (DipFBG) and the interference dip of the MZI (Dip1), the RI and temperature of the surrounding medium can be determined. The sensor has good operation linearity. The experimental results show that the distinctive spectral sensitivities are 0.071 75 nm/°C and −91.766 67 nm/RIU (refraction index unit) for Dip1 and 0.009 09 nm/°C for DipFBG. © 2015, Tianjin University of Technology and Springer-Verlag Berlin Heidelberg.
引用
收藏
页码：438 / 443
页数：5
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