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

Thomas D.P. Allsop*, Lin Zhang, David J. Webb, Ian Bennion

*Corresponding author for this work

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)103-108
Number of pages6
JournalOptics Communications
Volume211
Issue number1-6
DOIs
Publication statusPublished - 1 Oct 2002

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Diffraction gratings
Thermal effects
temperature effects
discrimination
Diffraction
gratings
attenuation
diffraction
Infrared radiation
Temperature
Fibers
fibers
temperature
sensitivity
matrices

Keywords

  • long-period fibre grating
  • second-order diffraction
  • strain and temperature sensing

Cite this

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title = "Discrimination between strain and temperature effects using first and second-order diffraction from a long-period grating",
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. {\circledC} 2002 Elsevier Science B.V. All rights reserved.",
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year = "2002",
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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.; Bennion, Ian.

In: Optics Communications, Vol. 211, No. 1-6, 01.10.2002, p. 103-108.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Discrimination between strain and temperature effects using first and second-order diffraction from a long-period grating

AU - Allsop, Thomas D.P.

AU - Zhang, Lin

AU - Webb, David J.

AU - Bennion, Ian

PY - 2002/10/1

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N2 - 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.

AB - 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.

KW - long-period fibre grating

KW - second-order diffraction

KW - strain and temperature sensing

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