All fiber magnetic field sensor with Ferrofluid-filled tapered microstructured optical fiber interferometer

被引：74

作者：

Deng, Ming ^{[1
]}

Huang, Can ^{[1
]}

Liu, Danhui ^{[1
]}

Jin, Wei ^{[1
,2
]}

Zhu, Tao ^{[1
]}

机构：

[1] Chongqing Univ, Minist Educ, Key Lab Optoelect Technol & Syst, Chongqing 400044, Peoples R China

[2] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 16期

关键词：

PHOTONIC CRYSTAL FIBER; FLUID; TEMPERATURE;

D O I：

10.1364/OE.23.020668

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An ultra-compact optical fiber magnetic field sensor based on a microstructured optical fiber (MOF) modal interference and ferrofluid (FF) has been proposed and experimentally demonstrated. The magnetic field sensor was fabricated by splicing a tapered germanium-doped index guided MOF with six big holes injected with FF to two conventional single-mode fibers. The transmission spectra of the proposed sensor under different magnetic field intensities have been measured and theoretically analyzed. Due to an efficient interaction between the magnetic nanoparticles in FF and the excited cladding mode, the magnetic field sensitivity reaches up to 117.9pm/mT with a linear range from 0mT to 30mT. Moreover, the fabrication process of the proposed sensor is simple, easy and cost-effective. Therefore, it will be a promising candidate for military, aviation industry, and biomedical applications, especially, for the applications where the space is limited. (C) 2015 Optical Society of America

引用

页码：20668 / 20674

页数：7

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