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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 14 — Jul. 15, 2013
  • pp: 17386–17391

Magnetic field sensor based on fiber Bragg grating with a spiral microgroove ablated by femtosecond laser

Yutang Dai, Minghong Yang, Gang Xu, and Yinquan Yuan  »View Author Affiliations


Optics Express, Vol. 21, Issue 14, pp. 17386-17391 (2013)
http://dx.doi.org/10.1364/OE.21.017386


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Abstract

A novel magnetic field sensor based on Terfenol-D coated fiber Bragg grating with spiral microstructure was proposed and demonstrated. Through a specially-designed holder, the spiral microstructure was ablated into the fiber Bragg grating (FBG) cladding by femtosecond laser. Due to the spiral microstructure, the sensitivity of FBG coated with magnetostrictive film was enhanced greatly. When the spiral pitch is 50 μm and microgroove depth is 13.5μm, the sensitivity of the magnetic field sensor is roughly 5 times higher than that of non-microstructured standard FBG. The response to magnetic field is reversible, and could be applicable for magnetic field detection.

© 2013 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(350.3390) Other areas of optics : Laser materials processing
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Sensors

History
Original Manuscript: May 20, 2013
Revised Manuscript: July 9, 2013
Manuscript Accepted: July 10, 2013
Published: July 12, 2013

Citation
Yutang Dai, Minghong Yang, Gang Xu, and Yinquan Yuan, "Magnetic field sensor based on fiber Bragg grating with a spiral microgroove ablated by femtosecond laser," Opt. Express 21, 17386-17391 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-14-17386


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References

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