Distributed temperature measurement using a Fabry-Perot effect based chirped fiber Bragg grating

P. C. Won*, Y. Lai, W. Zhang, J. S. Leng, J. A R Williams

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

A temperature distribution sensing system based on the reflection spectrum of a 70 mm apodized chirped fiber Bragg grating has been demonstrated. Reflection variations created by the Fabry-Perot effect due to the intra-grating wavelength shift are presented. By fitting a parametric transfer matrix model of the grating response to measured spectra, the temperature change, position and width of a localized temperature change are obtained. This system is particularly attractive of its simplicity, high spatial resolution and ability in measuring a non-monotonic distribution. Experiments to measure two localized heating regions along the grating indicate that the technique is promising for measuring more complex temperature profiles.

Original languageEnglish
Pages (from-to)494-499
Number of pages6
JournalOptics Communications
Volume265
Issue number2
DOIs
Publication statusPublished - 15 Sep 2006

Fingerprint

Fiber Bragg gratings
Temperature measurement
Bragg gratings
temperature measurement
gratings
fibers
temperature profiles
Temperature
Temperature distribution
temperature distribution
spatial resolution
Heating
Wavelength
heating
temperature
shift
high resolution
wavelengths
Experiments

Keywords

  • Bragg grating
  • Fiber-optic sensors
  • Temperature measurement

Cite this

Won, P. C. ; Lai, Y. ; Zhang, W. ; Leng, J. S. ; Williams, J. A R. / Distributed temperature measurement using a Fabry-Perot effect based chirped fiber Bragg grating. In: Optics Communications. 2006 ; Vol. 265, No. 2. pp. 494-499.
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Distributed temperature measurement using a Fabry-Perot effect based chirped fiber Bragg grating. / Won, P. C.; Lai, Y.; Zhang, W.; Leng, J. S.; Williams, J. A R.

In: Optics Communications, Vol. 265, No. 2, 15.09.2006, p. 494-499.

Research output: Contribution to journalArticle

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AU - Lai, Y.

AU - Zhang, W.

AU - Leng, J. S.

AU - Williams, J. A R

PY - 2006/9/15

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