High-Sensitivity Fiber Optic Temperature Sensor Based on Enhanced Vernier Effect

被引：7
作者：
Tong, Rui-Jie [1 ,2 ]
Xing, Bin [1 ,2 ]
Chen, Zi-Hao [1 ,2 ]
Zheng, Hao-Nan [1 ,2 ]
Zhou, Li-Ming [1 ,2 ]
机构：
[1] Northeastern Univ, Sch Informat Sci & Engn, Shenyang 110819, Peoples R China
[2] Hebei Key Lab Micronano Precis Opt Sensing & Measu, Qinhuangdao 066004, Peoples R China
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2024年 / 73卷
基金：
中国国家自然科学基金;
关键词：
Enhanced Vernier effect; Fabry-Perot interferometer; optic fiber temperature sensor; Sagnac interferometer;
D O I：
10.1109/TIM.2024.3381291
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：
The accurate detection of temperature is crucial in industry, agriculture, military, and so on. This work implements a temperature sensor based on the enhanced Vernier effect principle, which is comprised of a Fabry-Perot interferometer and a fiber optic Sagnac interferometer with slightly detuned free spectral ranges (FSRs). The increase in sensitivity to temperature is due to the shift of their wavelength in the opposite direction with temperature. Compared to conventional Vernier effect-based temperature sensors, this sensor achieves highly sensitive temperature measurements without the need for a complex fabrication process or the configuration of a temperature-insensitive interferometer for reference. It was concluded that the ultrahigh sensitivity of the detection device was 61.11 nm/degrees C in the detection interval from 30.4 degrees C to 34 degrees C, and it also had a high linear response and longtime stability.
引用
收藏
页码：1 / 8
页数：8
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