Remotely addressed optical fibre curvature sensor using multicore photonic crystal fibre

W. N. MacPherson, M. J. Gander, R. McBride, J. D C Jones, P. M. Blanchard, J. G. Burnett, A. H. Greenaway, B. Mangan, T. A. Birks, J. C. Knight, P. St J Russell

Research output: Contribution to journalArticlepeer-review

102 Citations (Scopus)

Abstract

We demonstrate an all-fibre curvature sensor that uses two-core photonic crystal fibre (PCF) as the sensing element. The PCF acts as a two-beam interferometer in which phase difference is a function of curvature in the plane containing the cores. A broadband source illuminates both cores, and the spectrum at a single point in the far-field interferogram is recorded. Applying a three-wavelength phase recovery algorithm to the data provides an unambiguous measurement of the interferometer phase, and hence curvature. © 2001 Published by Elsevier Science B.V.

Original languageEnglish
Pages (from-to)97-104
Number of pages8
JournalOptics Communications
Volume193
Issue number1-6
DOIs
Publication statusPublished - 15 Jun 2001

Keywords

  • Crystal
  • Fibre interferometer
  • Multicore
  • Photonic
  • Sensor

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