FMCW birefringent fibre strain sensor with two forward-coupled beams

Michael Campbell, Gang Zheng, Peter A. Wallace

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper describes a new birefringent fibre strain sensor which is based on the FMCW technique. The sensor comprises a single length of elliptical core birefringent fibre with a mirror attached at the far end and a mode coupler in the middle. The strain variation of the fibre sensing probe can be measured by detecting the phase shift of the beat signal which is produced by two forward-coupled polarisation mode beams. The experimental results demonstrated that the sensor has many advantages, such as (i) high resolution (2 microstrain), (ii) large dynamic measurement range (5000 microstrain), (iii) large signal intensity and good signal contrast, (iv) long and length-adjustable sensing probe, (v) long and environment-insensitive lead-in and lead-out fibre, (vii) simple signal processing, and (vii) low cost.

Original languageEnglish
Title of host publicationProceedings Volume 2783, Micro-Optical Technologies for Measurement, Sensors, and Microsystems
PublisherSPIE
Pages312-315
Number of pages4
Volume2783
DOIs
Publication statusPublished - 26 Aug 1996
EventLasers, Optics, and Vision for Productivity Manufacturing I - Besancon, France
Duration: 10 Jun 199614 Jun 1996

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
ISSN (Print)0277-786X

Conference

ConferenceLasers, Optics, and Vision for Productivity Manufacturing I
Country/TerritoryFrance
CityBesancon
Period10/06/9614/06/96

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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