Feedback controlled single wavelength interrogation technique for miniature all-silica EFPI fibre optic pressure sensors

K. Bremer, E. Lewis, G. Leen, B. Moss, S. Lochmann, I. Mueller

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper proposes a novel technique to stabilise the output wavelength of a tuneable laser source to operate always in the linear range of a miniature all-silica Extrinsic Fabry-Perot Interferometric (EFPI) fibre optic pressure sensor. The technique is based on a fibre optic hybrid sensor, which consists of a miniature all-silica EFPI fibre optic pressure sensor with an incorporated in-Fibre Bragg Grating (FBG). The FBG temperature reference sensor is used as a feedback element to stabilise the output wavelength of a tuneable laser source. Therefore the novel interrogation technique allows high speed pressure measurements in high temperature environments.

Original languageEnglish
Title of host publicationFourth European Workshop on Optical Fibre Sensors
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event4th European Workshop on Optical Fibre Sensors - Porto, Portugal
Duration: 8 Sep 201010 Sep 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7653
ISSN (Print)0277-786X

Conference

Conference4th European Workshop on Optical Fibre Sensors
Country/TerritoryPortugal
CityPorto
Period8/09/1010/09/10

Keywords

  • Fabry-perot interferometer
  • FBG
  • High speed
  • High temperature
  • Optical fibre sensor
  • Pressure measurement

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