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

页码：950 / 955

页数：6

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