Tunnel monitoring using multicore fibre displacement sensor

Abstract

We describe the first application of multiplexed fibre Bragg grating strain sensors in a multicore fibre. Sets of gratings, acting as strain gauges, are co-located in the multicore fibre such that they enable the curvature to be measured. Multiple sets of these gratings allow the curvature to be measured at several points along the fibre. This sensor is configured to monitor displacement of concrete tunnel sections, and was demonstrated capable of displacement measurement with a resolution of ±0.1 mm over a range of several millimeters.

Publication DOI: https://doi.org/10.1117/12.623992
Divisions: Engineering & Applied Sciences > Mechanical Engineering & Design
Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Additional Information: Copyright 2005 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Uncontrolled Keywords: Bend sensing,Fibre Bragg grating,Multicore,Optical fibre,Structural monitoring,Electrical and Electronic Engineering,Condensed Matter Physics
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.spi ... /12.623992.full (Publisher URL)
PURE Output Type: Conference article
Published Date: 2005-05-23
Authors: MacPherson, W. N.
Silva-Lopez, M.
Barton, J. S.
Moore, A. J.
Jones, J. D C
Zhao, D.
Zhang, L. ( 0000-0002-1691-5577)
Bennion, I.
Metje, N.
Rogers, C. D F
Chapman, D. N.

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