Characterisation and performance of a Terfenol-D coated femtosecond laser inscribed optical fibre Bragg sensor with a laser ablated microslot for the detection of static magnetic fields


We present a novel device for the characterisation of static magnetic fields through monitoring wavelength shifts of femtosecond inscribed fibre Bragg grating and micromachined slot, coated with Terfenol-D. The device was sensitive to static magnetic fields and can be used as a vectoral sensor for the detection of magnetic fields as low as 0.046 mT with a resolution of ± 0.3mT in transmission and ± 0.7mT in reflection. The use of a femtosecond laser to both inscribe the FBGs and micromachine the slot in a single stage prior to coating the device significantly simplifies the fabrication.

Additional Information: © 2010 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Publication ISSN: 1094-4087
Last Modified: 29 Nov 2023 10:20
Date Deposited: 10 May 2011 10:42
Full Text Link: http://www.opti ... URI=oe-19-1-363
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PURE Output Type: Article
Published Date: 2011-01-03
Authors: Smith, Graham N.
Allsop, Thomas D.P.
Kalli, Kyriacos
Koutsides, Charalambos
Neal, Ron
Sugden, Kate
Culverhouse, Philip
Bennion, Ian



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