All-Fiber Mach-Zehnder Interferometer for Liquid Level Measurement

被引：66
|
作者：
Sun, Mingming [1 ]
Jin, Yongxing [1 ]
Dong, Xinyong [1 ]
机构：
[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2015年 / 15卷 / 07期
关键词：
Mach-Zehnder interferometer; peanut shape structure; liquid level sensor; SENSOR; TEMPERATURE;
D O I：
10.1109/JSEN.2015.2406872
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：
A new liquid level sensor based on in fiber Mach-Zehnder interferometer (MZI) is proposed and demonstrated. The MZI is formed by cascading two peanut-shaped fiber structures in single-mode fiber. In the water level experiment, the sensitivities of sensors with lengths of 53.5 and 75.4 mm are -0.1025 and -0.0279 nm/mm, respectively. The absolute value of sensitivity increases with the refractive index of liquid. The MZI presented in this paper has advantages of low cost and ease of fabrication, which can be a potential advantage in the liquid level measurement.
引用
收藏
页码：3984 / 3988
页数：5
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