Magnetic-field sensor based on whispering-gallery modes in a photonic crystal fiber infiltrated with magnetic fluid

被引：74

作者：

Mahmood, Aseel ^{[1
,2
]}

Kavungal, Vishnu ^{[1
]}

Ahmed, Sudad S. ^{[2
]}

Farrell, Gerald ^{[1
]}

Semenova, Yuliya ^{[1
]}

机构：

[1] Dublin Inst Technol, Photon Res Ctr, Dublin 8, Ireland

[2] Univ Baghdad, Dept Phys, Coll Sci, Baghdad, Iraq

来源：

OPTICS LETTERS | 2015年 / 40卷 / 21期

关键词：

Magnetic fluids - Crystal whiskers - Microresonators - Nanomagnetics - Magnetic fields - Optical resonators - Magnetic sensors - Magnetometers - Whispering gallery modes - Photonic crystal fibers;

D O I：

10.1364/OL.40.004983

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, a magnetic-field sensor was designed to take advantage of the tunability of the resonance wavelengths of a cylindrical whispering-gallery-mode microresonator. The microresonator is based on a 1.3 cm length of photonic crystal fiber infiltrated with a magnetic fluid containing nanoparticles with diameters of either 5 or 10 nm. The Q-factor achieved for the microresonators was 4.24 x 10(3) or higher. When a magnetic field is applied, the whispering-gallery-mode resonances shift toward longer wavelengths. The experimentally demonstrated sensitivity of the proposed sensor was as high as 110 pm/mT in the magnetic field range from 0 to 38.7 mT. (C) 2015 Optical Society of America

引用

页码：4983 / 4986

页数：4

共 19 条

[1] Accurate simulation of two-dimensional optical microcavities with uniquely solvable boundary integral equations and trigonometric Galerkin discretization [J].