Vector magnetic field sensor based on U-bent single-mode fiber and magnetic fluid

被引：83
作者：
Li, Yongxi [1 ]
Pu, Shengli [1 ,2 ]
Hao, Zijian [1 ]
Yan, Shaokang [1 ]
Zhang, Yuxiu [1 ]
Lahoubi, Mahieddine [3 ]
机构：
[1] Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China
[2] Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China
[3] Badji Mokhtar Annaba Univ, Dept Phys, Lab LPS, Annaba 23000, Algeria
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 04期
基金：
中国国家自然科学基金;
关键词：
SIDE-POLISHED FIBER; OPTICAL-FIBER; MICROFIBER; RESONANCE;
D O I：
10.1364/OE.416187
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel, compact, and easy fabrication vector magnetic field sensor has been proposed and investigated. The proposed sensor consists of a U-bent single-mode fiber fixed in a magnetic-fluid-filled vessel. Neither mechanical modification nor additional fiber grating is needed during the sensor fabrication. The results show that the response of magnetic fluid to magnetic field can be used to measure the direction and intensity of magnetic field via whispering gallery modes supported by the U-bent fiber structure with suitable bending radius. The sensitivity of direction is 0.251 nm/degrees, and the maximum magnetic field intensity sensitivity is 0.517 nm/mT. Besides, the results of this work prove the feasibility for realizing vector magnetic sensors based on other bending structures (such as bending multimode interference, bending SPR structure) in the future. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：5236 / 5246
页数：11
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