Simultaneous measurement of temperature and strain: cross sensitivity considerations

F. Farahi, David J. Webb, Julian D.C. Jones, David A. Jackson

Research output: Contribution to journalArticle

Abstract

Interferometric sensors using optical fibers as a transduction medium have been shown to be sensitive to a variety of physical measurands. A result of this is that the resolution of a system designed to sense strain, for example, may be compromised by fluctuations in the temperature of the environment. The possibility of simultaneously determining the strain and temperature applied to the same piece of highly birefringent fiber is discussed. Second-order effects are shown to be important for long sensing lengths or in the presence of high strains or temperature changes. The results of experiments carried out to verify the theoretical predictions are also described.
Original languageEnglish
Pages (from-to)138-142
Number of pages5
JournalJournal of Lightwave Technology
Volume8
Issue number2
DOIs
Publication statusPublished - Feb 1990

Keywords

  • capacitive sensors
  • optical fiber polarization
  • optical fiber sensors
  • optical interferometry
  • optical sensors
  • phase measurement
  • temperature sensors
  • birefringence
  • fibre optic sensors
  • light interferometers
  • strain measurement
  • temperature measurement
  • cross-sensitivity
  • highly birefringent fiber
  • interferometric sensors
  • optical fibers
  • second-order effects

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