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|Document Type: ||Article|
|Title: ||Characterization of the response of fibre Bragg gratings fabricated in stress
and geometrically induced high birefringence fibres to temperature and
|Authors: ||Chehura, Edmon|
Staines, Stephen E.
James, Stephen W.
Tatam, Ralph P.
|Issue Date: ||2004|
|Citation: ||Edmon Chehura, Chen-Chun Ye, Stephen E Staines, Stephen W James and Ralph P Tatam; Characterization of the response of fibre Bragg gratings fabricated in stress and geometrically induced high birefringence fibres to temperature and transverse load. Smart Structures and Materials, 2004, Vol. 13, No. 4, pp888-895|
|Abstract: ||The transverse load and temperature sensitivities of fibre Bragg gratings (FBGs)
fabricated in a range of commercially available stress and geometrically induced
high birefringent (HiBi) fibres have been experimentally investigated. The
wavelength reflected by the FBG in each polarization eigenmode was measured
independently and simultaneously using a custom designed interrogation system.
The highest transverse load sensitivity, of 0.23 ± 0.02 nm/(N/mm), was obtained
with HiBi FBGs fabricated in elliptically clad fibre. This was higher than for
any other HiBi fibre, which, coupled with the small diameter of the fibre, makes
it a good candidate for an embedded or surface mounted strain sensor. The
highest temperature sensitivity of 16.5 ± 0.1 pm °C-1, approximately 27% greater
than any other fibre type, was obtained with the HiBi FBG fabricated in Panda
fibre. HiBi FBG sensors fabricated in D-clad fibre were the only ones to exhibit
identical temperature sensitivities for the slow and fast axes (11.5 ± 0.1 pm °|
|Appears in Collections:||Staff publications - School of Engineering|
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