NDLI: Magnetic Field Sensor Based on Photonic Crystal Fiber Taper Coated With Ferrofluid

Content Provider	IEEE Xplore Digital Library
Author	Yong Zhao Di Wu Ri-Qing Lv
Copyright Year	1989
Abstract	A novel and compact magnetic field sensor based on a tapered photonic crystal fiber (PCF) coated with ferrofluid is proposed. It consists of a section of tapered PCF, which is spliced between two single-mode fibers with a waist diameter of 24 μm. The ferrofluid is filled in the capillary to coat the PCF taper. Experimentally, the refractive index (RI) of the ferrofluid increased under increasing magnetic field intensity (H) with a sensitivity of 4 × 10^-5 RIU/Gs and the RI sensitivity in the evanescent held is 401 nm/RIU. Therefore, the interference spectrum is shifted as the change of H ranged from 100 to 600 Gs with a sensitivity of 16.04 pm/Gs and resolution of 0.62 Gs. The proposed magnetic field sensor is attractive due to its compact size, low cost, and immunity to electromagnetic interference beyond what conventional magnetic field sensors can offer.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	26
Ending Page	29
Page Count	4
File Size	973618
File Format	PDF
ISSN	10411135
Volume Number	27
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic fields Optical fiber sensors Sensitivity Magnetic liquids Refractive index Interference Magnetic field measurement Magnetic field sensor Photonic crystal fiber taper Ferrofluid Mach-Zehnder interferometer magnetic field sensor ferrofluid Mach–Zehnder interferometer
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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