Simultaneous measurement of strain and temperature using the first- and second-order diffraction wavelengths of Bragg gratings

G.P. Brady, K. Kalli, David J. Webb, David A. Jackson, L. Reekie, J.L. Archambault

Research output: Contribution to journalArticle

Abstract

A method of discriminating between temperature and strain effects in fibre sensing using a conventionally written, in-fibre Bragg grating is presented. The technique uses wavelength information from the first and second diffraction orders of the grating element to determine the wavelength dependent strain and temperature coefficients, from which independent temperature and strain measurements can be made. The authors present results that validate this matrix inversion technique and quantify the strain and temperature errors which can arise for a given uncertainty in the measurement of the reflected wavelength.
Original languageEnglish
Pages (from-to)156-161
Number of pages6
JournalIEE Proceedings Optoelectronics
Volume144
Issue number3
DOIs
Publication statusPublished - Jun 1997

Fingerprint

Bragg gratings
diffraction
wavelengths
fibers
strain measurement
temperature
temperature effects
temperature measurement
gratings
inversions
coefficients

Keywords

  • fraction gratings
  • fibre optic sensors
  • measurement errors
  • strain measurement
  • strain sensors
  • temperature measurement
  • Bragg gratings
  • first diffraction orders
  • first-order diffraction wavelengths
  • grating element
  • in-fibre grating
  • matrix inversion technique
  • measurement uncertainty
  • reflected wavelength measurement
  • second diffraction orders
  • second-order diffraction wavelengths
  • strain errors
  • temperature coefficients
  • temperature errors
  • wavelength dependent strain
  • wavelength information

Cite this

Brady, G.P. ; Kalli, K. ; Webb, David J. ; Jackson, David A. ; Reekie, L. ; Archambault, J.L. / Simultaneous measurement of strain and temperature using the first- and second-order diffraction wavelengths of Bragg gratings. In: IEE Proceedings Optoelectronics. 1997 ; Vol. 144, No. 3. pp. 156-161.
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keywords = "fraction gratings, fibre optic sensors, measurement errors, strain measurement, strain sensors, temperature measurement, Bragg gratings, first diffraction orders, first-order diffraction wavelengths, grating element, in-fibre grating, matrix inversion technique, measurement uncertainty, reflected wavelength measurement, second diffraction orders, second-order diffraction wavelengths, strain errors, temperature coefficients, temperature errors, wavelength dependent strain, wavelength information",
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Simultaneous measurement of strain and temperature using the first- and second-order diffraction wavelengths of Bragg gratings. / Brady, G.P.; Kalli, K.; Webb, David J.; Jackson, David A.; Reekie, L.; Archambault, J.L.

In: IEE Proceedings Optoelectronics, Vol. 144, No. 3, 06.1997, p. 156-161.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Simultaneous measurement of strain and temperature using the first- and second-order diffraction wavelengths of Bragg gratings

AU - Brady, G.P.

AU - Kalli, K.

AU - Webb, David J.

AU - Jackson, David A.

AU - Reekie, L.

AU - Archambault, J.L.

PY - 1997/6

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N2 - A method of discriminating between temperature and strain effects in fibre sensing using a conventionally written, in-fibre Bragg grating is presented. The technique uses wavelength information from the first and second diffraction orders of the grating element to determine the wavelength dependent strain and temperature coefficients, from which independent temperature and strain measurements can be made. The authors present results that validate this matrix inversion technique and quantify the strain and temperature errors which can arise for a given uncertainty in the measurement of the reflected wavelength.

AB - A method of discriminating between temperature and strain effects in fibre sensing using a conventionally written, in-fibre Bragg grating is presented. The technique uses wavelength information from the first and second diffraction orders of the grating element to determine the wavelength dependent strain and temperature coefficients, from which independent temperature and strain measurements can be made. The authors present results that validate this matrix inversion technique and quantify the strain and temperature errors which can arise for a given uncertainty in the measurement of the reflected wavelength.

KW - fraction gratings

KW - fibre optic sensors

KW - measurement errors

KW - strain measurement

KW - strain sensors

KW - temperature measurement

KW - Bragg gratings

KW - first diffraction orders

KW - first-order diffraction wavelengths

KW - grating element

KW - in-fibre grating

KW - matrix inversion technique

KW - measurement uncertainty

KW - reflected wavelength measurement

KW - second diffraction orders

KW - second-order diffraction wavelengths

KW - strain errors

KW - temperature coefficients

KW - temperature errors

KW - wavelength dependent strain

KW - wavelength information

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DO - 10.1049/ip-opt:19971373

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SP - 156

EP - 161

JO - IEE Proceedings Optoelectronics

JF - IEE Proceedings Optoelectronics

SN - 1350-2433

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