Simultaneous Measurement of Refractive Index and Temperature Based on a Peanut-Shape Structure In-Line Fiber Mach-Zehnder Interferometer

被引：55
作者：
Yu, Fangda [1 ]
Xue, Peng [1 ]
Zhao, Xiaowei [1 ]
Zheng, Jie [1 ]
机构：
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2019年 / 19卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Optical fiber sensor; peanut-shape structure; Mach-Zehnder interferometer; simultaneous measurement of refractive index and temperature; SENSOR; REFRACTOMETER;
D O I：
10.1109/JSEN.2018.2880265
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：
We proposed a peanut-shape structure in-line fiber Mach-Zehnder interferometer (MZI) for simultaneous measurement of refractive index (RI) and temperature. Two kinds of demodulation methods were investigated and compared. The wavelength-related and phase-related character matrices of the in-line fiber MZI were determined for simultaneous measurement of RI and temperature, respectively. For the wavelength-related measurement, the highest temperature and RI sensitivities were 0.0709 nm/degrees C and -47.3620 nm/RIU, respectively. The phase-related measurement was with a lower measuring errors compared to the wavelength-related measurement, and the highest temperature and RI sensitivities were -0.0632rad/degrees C (0.0764 nm/degrees C) and 77.0995rad/RIU (-93.2429 nm/RIU), respectively. The minimum measuring errors of temperature and RI were 0.3800 degrees C and 0.0004 RIU, respectively.
引用
收藏
页码：950 / 955
页数：6
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