Optical fibre bending sensor with automatic intensity compensation

Mohd Anwar Zawawi, Sinead O'Keeffe, Elfed Lewis

Research output: Contribution to journalArticlepeer-review

Abstract

An extrinsic optical fibre bending sensor based on intensity modulation technique aimed for physiological application is presented. This sensing technique is capable of measuring the bending angle continuously in flexion, extension and lateral movements. The sensor working range is between -22° and 22° with 0.4° accuracy and 0.1°resolution. From the theoretical estimation, the bending sensor automatically compensates for variation in the source intensity and various losses in the input and output fibres. The experimental results obtained in this investigation verified the theoretical finding. Among the advantages of the this optical bending sensor are being noninvasive, suitable for continuous measurement and immune from electromagnetic effects.

Original languageEnglish
Article number6983526
Pages (from-to)2492-2498
Number of pages7
JournalJournal of Lightwave Technology
Volume33
Issue number12
DOIs
Publication statusPublished - 15 Jun 2015

Keywords

  • Bending sensor
  • health monitoring
  • intensitymodulation sensor
  • optical fibre sensor

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