Discrimination between strain and temperature effects using first and second-order diffraction from a long-period grating

Allsop, Thomas D.P., Zhang, Lin, Webb, David J. and Bennion, Ian (2002). Discrimination between strain and temperature effects using first and second-order diffraction from a long-period grating. Optics Communications, 211 (1-6), pp. 103-108.

Abstract

We study the effects of temperature and strain on the spectra of the first and second-order diffraction attenuation bands of a single long-period grating (LPG) in step-index fibre. The primary and second-order attenuation bands had comparable strength with the second-order bands appearing in the visible and near-infra red parts of the spectrum. Using first and second-order diffraction to the eighth cladding mode a sensitivity matrix was obtained with limiting accuracy given by cross-sensitivity of ∼ 1.19% of the measurement. The sensing scheme presented as a limiting temperature and strain resolution of ± 0.7 °C and ∼ ± 25 με. © 2002 Elsevier Science B.V. All rights reserved.

Publication DOI: https://doi.org/10.1016/S0030-4018(02)01906-5
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Uncontrolled Keywords: long-period fibre grating,second-order diffraction,strain and temperature sensing,Atomic and Molecular Physics, and Optics
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Related URLs: http://www.scopus.com/inward/record.url?scp=0036787193&partnerID=8YFLogxK (Scopus URL)
Published Date: 2002-10-01
Authors: Allsop, Thomas D.P.
Zhang, Lin ( 0000-0002-1691-5577)
Webb, David J. ( 0000-0002-5495-1296)
Bennion, Ian

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