Magnetic Field Sensor Based on Magnetic Fluid Selectively Infilling Photonic Crystal Fibers

Magnetic field sensor based on magnetic fluid selectively infilling photonic crystal fibers is designed and analyzed by the finite-element method. One cladding air hole is infiltrated with magnetic fluid and works as a defect core. As the phase matched condition is satisfied, the lights in transferr...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 27; no. 7; pp. 717 - 720
Main Authors Chen, Hailiang, Li, Shuguang, Li, Jianshe, Fan, Zhenkai
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Fiber optics sensors
Magnetic cores
Magnetic fluid
Magnetic resonance
Perpendicular magnetic anisotropy
Photonic crystal fibers
Photonic crystals
Refractive index
Sensitivity
Fiber optics sensors
Photonic crystal fibers
Magnetic fluid
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Summary:Magnetic field sensor based on magnetic fluid selectively infilling photonic crystal fibers is designed and analyzed by the finite-element method. One cladding air hole is infiltrated with magnetic fluid and works as a defect core. As the phase matched condition is satisfied, the lights in transferring core couple to the defect core and the confinement losses of core modes experience an abrupt increase. The sensitivity and figure of merit can reach to 456.1 pm/Oe, 0.408 Oe -1 for x -polarized direction and 542.9 pm/Oe, 0.169 Oe -1 for y -polarized direction, respectively. The designed magnetic fluid selectively infilling photonic crystal fibers which show small volume, high sensitivity, and figure of merit are suitable for magnetic field sensor.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2015.2390291