Component position measurement through polymer material by broadband absolute distance interferometry

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We describe the development of a fibre optic system using absolute distance interferometry for application to long-term monitoring of component positions. Initially we demonstrate the operation of a single probe in air with a distance resolution of 8 nm and an absolute displacement accuracy of 0.08% over relatively short baselines of up to a few mm. The technique is then developed to measure distance through a transparent polymer. Our in situ method utilizes a dual probe arrangement to measure optical path length and refractive index simultaneously. © British Crown Copyright 2005/MOD.

Original languageEnglish
Pages (from-to)2066-2071
Number of pages6
JournalMeasurement Science and Technology
Volume16
Issue number10
DOIs
Publication statusPublished - 1 Oct 2005

Keywords

  • Absolute distance
  • Broad band
  • Fibre optic sensor
  • Interferometry
  • Transparent polymer

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