Fibre optic broadband interferometry for absolute distance measurements through optically dense media

Peter B. Harrison, R. R J Maier, James S. Barton, J. D C Jones, Scott McCulloch, Gary Burnell

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper we describe absolute distance measurement through an optically dense transparent polymer, using a fibre-based, broadband interrogated, Fabry-Perot interferometer. The dual fibre sensor demonstrates a system that provides 'on-line' compensation for temperature and stress effects through recovery of refractive index information. Over a typical sensing range of 1mm distance measurements with sub-micron accuracy are reported.

Original languageEnglish
Article number167
Pages (from-to)683-686
Number of pages4
JournalProceedings of SPIE - the International Society for Optical Engineering
Volume5855 PART II
DOIs
Publication statusPublished - 2005
Event17th International Conference on Optical Fibre Sensors - Bruges, Belgium
Duration: 23 May 200527 May 2005

Keywords

  • Broadband interferometry
  • Distance measurement
  • Optical fibre sensor

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