Pitch and roll sensing using fibre Bragg gratings in multicore fibre

William N. MacPherson, Gordon M.H. Flockhart, Robert R.J. Maier, James S. Barton, Julian D.C. Jones, Donghui Zhao, Lin Zhang, Ian Bennion

Research output: Contribution to journalArticlepeer-review


We report the first use of a multicore fibre incorporating fibre Bragg grating strain sensors in each core as a fibre optic pitch and roll sensor. A length of four-core fibre supported at one end forms a cantilever. The differential strains between opposite grating pairs depend on the fibre’s orientation in pitch (in the vertical plane) and roll (azimuth) with respect to gravity. Resolutions of ±2 in roll and ±15 in pitch were measured.

Original languageEnglish
Pages (from-to)1642-1646
Number of pages5
JournalMeasurement Science and Technology
Issue number8
Publication statusPublished - 19 Jul 2004


  • bend measurement
  • orientation measurement
  • fibre Bragg grating
  • fibre optic sensing
  • multicore fibre


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