Vector magnetic field sensor based on orthogonal off-set spliced optical fiber cladded with magnetic fluid

被引：15
作者：
Hao, Zijian [1 ]
Pu, Shengli [1 ,2 ]
Li, Yongxi [1 ]
Li, Dihui [1 ]
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
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2021年 / 38卷 / 09期
基金：
中国国家自然科学基金;
关键词：
SINGLE-MODE-FIBER; SIDE-POLISHED FIBER; REFRACTIVE-INDEX;
D O I：
10.1364/JOSAB.423839
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Based on the anisotropic distribution of magnetic nanoparticles within magnetic fluid under an external magnetic field, a novel, to the best of our knowledge, vector magnetic field sensor based on an orthogonal offset spliced optical fiber structure cascaded with fiber taper has been proposed. The expression of interference dip wavelength with respect to external magnetic field is formulated, and the dual-parameter sensing matrix is established. Simultaneous measurement of magnetic field intensity and direction is realized. The corresponding physical principle is clarified. The sensing properties are experimentally investigated and theoretically verified. The theoretical results are in good agreement with the experimental ones. (C) 2021 Optical Society of America
引用
收藏
页码：2494 / 2501
页数：8
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