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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 20 — Oct. 15, 2013
  • pp: 3999–4001

Optical fiber magnetic field sensor based on single-mode–multimode–single-mode structure and magnetic fluid

Yaofei Chen, Qun Han, Tiegen Liu, Xinwei Lan, and Hai Xiao  »View Author Affiliations

Optics Letters, Vol. 38, Issue 20, pp. 3999-4001 (2013)

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An optical fiber magnetic field sensor based on the single-mode–multimode–single-mode (SMS) structure and magnetic fluid (MF) is proposed and demonstrated. By using a piece of no-core fiber as the multimode waveguide in the SMS structure and MF sealed in a capillary tube as the magnetic sensitive media, which totally immersing the no-core fiber, an all-fiber magnetic sensor was fabricated. Interrogation of the magnetic field strength can be achieved either by measuring the dip wavelength shift of the transmission spectrum or by detecting the transmission loss at a specific wavelength. A demonstration sensor with sensitivities up to 905pm/mT and 0.748dB/mT was fabricated and investigated. A theoretical model for the design of the proposed device was developed and numerical simulations were performed.

© 2013 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(160.3820) Materials : Magneto-optical materials

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: July 26, 2013
Revised Manuscript: September 6, 2013
Manuscript Accepted: September 6, 2013
Published: October 3, 2013

Yaofei Chen, Qun Han, Tiegen Liu, Xinwei Lan, and Hai Xiao, "Optical fiber magnetic field sensor based on single-mode–multimode–single-mode structure and magnetic fluid," Opt. Lett. 38, 3999-4001 (2013)

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