A High-Resolution Liquid-Level Sensor Based on FabryPerot Interferometer With Fiber Laser Intracavity Sensing

被引：11

作者：

Shi, Jia ^{[1
,2
]}

Xu, Ziyi ^{[1
]}

Li, Xianguo ^{[1
]}

Bai, Hua ^{[1
]}

Guo, Cuijuan ^{[1
]}

Niu, Pingjuan ^{[1
]}

Yao, Jianquan ^{[3
]}

机构：

[1] Tiangong Univ, Tianjin Key Lab Optoelect Detect Technol & Syst, Sch Elect & Informat Engn, Tianjin 300387, Peoples R China

[2] Southeast Univ, Natl Mobile Communicat Res Lab, Nanjing 210096, Peoples R China

[3] Tianjin Univ, Sch Precis Instruments & Optoelect Engn, Key Lab Optoelect Informat Technol, Minist Educ, Tianjin 300072, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2023年 / 23卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Fabry-Perot interferometer (FPI); fiber ring laser (FRL); high resolution; intracavity sensing; liquid-level sensing; MACH-ZEHNDER INTERFEROMETER; REFRACTIVE-INDEX; PEROT; TRANSDUCER;

D O I：

10.1109/JSEN.2023.3288223

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：

High-resolution monitoring of liquid levels over a wide range has always been a great challenge. In this article, a fiber ring laser (FRL) sensor system with Fabry-Perot interferometer (FPI) is proposed for the high-resolution measurement of liquid level. The FPI fabricated with a polyimide film is embedded in an FRL for intracavity sensing. It is used as a reflective sensing head, which generates different reflection losses at different liquid levels to modulate the output power of the FRL. With the intracavity sensing, the resolution of the liquid-level sensing system has been significantly improved from 37.5 to 1.5 mm. The measurement range of the liquid-level sensing system is obtained as 0.6 m. The output stability and measurement error of the sensing system have been discussed. The sensor has a compact structure and a broad application prospect in the field of wide-range and high-resolution liquid-level monitoring, such as in chemical and marine applications.

引用

页码：16938 / 16943

页数：6

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