Magnetic field sensor based on magnetic-fluid-coated long-period fiber grating

Magnetic field sensor based on magnetic-fluid-coated long-period fiber grating
Title:
Magnetic field sensor based on magnetic-fluid-coated long-period fiber grating
Other Titles:
Journal of Optics
Keywords:
Publication Date:
27 May 2015
Citation:
Nancy Meng Ying Zhang et al 2015 J. Opt. 17 065402
Abstract:
Magnetic fluid is a promising material for sensing applications due to its remarkable magnetooptic properties. An optical fiber magnetic field sensor was developed using a long-period grating (LPG) coated with magnetic fluid. Magnetic fluid undergoes magnetization, aggregation, and phase transitions when it is under an external magnetic field. Optical properties changes that induced by the magnetic field can be sensed by the LPG of which resonant wavelength and transmission minimum are highly sensitive to the change of ambient medium. We demonstrate that the proposed sensor can maintain a high sensitivity of ∼0.154 dB/Gauss at field strength of as low as ∼7.4 Gauss.
License type:
PublisherCopyrights
Funding Info:
We wish to acknowledge the funding support for this project from Nanyang Technological University under the Undergraduate Research Experience on Campus (URECA) program, Singapore A*STAR ‘Advanced Optics in Engineering’ Program under Grant No. 1223600006, funding support from Nanyang Technological University (Startup grant: Lei Wei) and a NRF-CRP grant (Non-volatile logic and memory integrata circuit devices, NRF-CRP9-2011-01). Also, we sincerely appreciate the assistance of Dr Chinkhanlun Guite from School of Physical and Mathematical Science (SPMS) of Nanyang Technological University for the experiment setup.
Description:
ISSN:
2040-8978
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