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
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Journal
Optics Express
Date Issued
January 3, 2011
Abstract
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.
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oe-19-1-363.pdf
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1.19 MB
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Adobe PDF
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