All-Fiber Magnetic Field Sensor Based on Hollow Optical Fiber and Magnetic Fluid

被引：56
|
作者：
Shi, Fan [1 ]
Bai, Xuekun [1 ]
Wang, Feng [1 ]
Pang, Fufei [1 ]
Pu, Shengli [2 ]
Zeng, Xianglong [1 ]
机构：
[1] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Network, Shanghai 200072, Peoples R China
[2] Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2017年 / 17卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Hollow optical fiber; magnetic field sensor; magnetic fluid; MACH-ZEHNDER INTERFEROMETER; TUNABLE REFRACTIVE-INDEX; CORE FIBER; HIGH-SENSITIVITY; TEMPERATURE; FERROFLUID; DEVICES;
D O I：
10.1109/JSEN.2016.2636879
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 compact all-fiber magnetic field sensor is achieved by using Mach-Zehnder interferometer based on the hollow optical fiber (HOF) and the magnetic fluid (MF). The HOF is sandwiched between two single mode fibers (SMFs), which form an SMF-HOF-SMF (SHS) structure. Then, the SHS structure is immersed in MF to sense the magnetic field strength. The magnetic field assisted tunable refractive index of MF is exploited to realize the sensor. As a result, the magnetic field strength can be obtained by monitoring the wavelength shift of the SHS structure. The maximum magnetic field sensing sensitivity of -170 pm/Oe is obtained at the wavelength around 1580 nm. Besides, an intensity sensitivity of -0.21268 dB/Oe is also achieved.
引用
收藏
页码：619 / 622
页数：4
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