Magnetic Field Sensing Based on Whispering Gallery Mode with Nanostructured Magnetic Fluid-Infiltrated Photonic Crystal Fiber

A kind of novel and compact magnetic field sensor has been proposed and investigated experimentally. The proposed sensor consists of a tapered single mode fiber coupled with a nanostructured magnetic fluid-infiltrated photonic crystal fiber, which is easy to be fabricated. The response of magnetic f...

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Bibliographic Details
Published inNanomaterials (Basel, Switzerland) Vol. 12; no. 5; p. 862
Main Authors Zhang, Chencheng, Pu, Shengli, Hao, Zijian, Wang, Boyu, Yuan, Min, Zhang, Yuxiu
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 03.03.2022
MDPI
Subjects
Coupled modes
Crystal fibers
Electricity distribution
fiber sensor
Light
magnetic field sensor
Magnetic fields
magnetic fluid
Magnetic fluids
Magnetic flux
Magnetic resonance
Magnetism
microcavity resonator
Nanoparticles
Nanostructure
Nanostructured materials
Optics
Photonic crystals
Sensitivity
Sensors
Surfactants
whispering gallery mode
China
magnetic fluid
whispering gallery mode
fiber sensor
magnetic field sensor
microcavity resonator
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Summary:A kind of novel and compact magnetic field sensor has been proposed and investigated experimentally. The proposed sensor consists of a tapered single mode fiber coupled with a nanostructured magnetic fluid-infiltrated photonic crystal fiber, which is easy to be fabricated. The response of magnetic fluid to magnetic field is used to measure the intensity of magnetic field via whispering gallery mode. The magnetic field-dependent shift in resonance wavelength is observed. The maximum magnetic field intensity sensitivity is 53 pm/mT. The sensor sensitivity is inversely proportional to the thickness of the photonic crystal fiber cladding.
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ISSN:2079-4991
2079-4991
DOI:10.3390/nano12050862