Two-dimensional bend sensing with a single, multi-core optical fibre

Paul M Blanchard, James G Burnett, G R G Erry, Alan Howard Greenaway, P Harrison, B Mangan, J C Knight, P St J Russell, M J Gander, Roy McBride, Julian David Clayton Jones

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

Measurement of two-dimensional bending in a structural element using intrinsic optical fibre strain gauges would normally require three sensors to be attached to, or embedded within, the structure. The same measurement can now be made using a single multi-core optical fibre, reducing deployment cost and increasing practicality. Fabrication of a novel three-core photonic crystal fibre is described. The ability of the fibre sensor to measure bend in two dimensions is demonstrated in the laboratory using interferometric interrogation at a single wavelength. Deployment of the sensor to measure the deformation of a bridge undergoing loading trials is described.

Original languageEnglish
Pages (from-to)132-140
Number of pages9
JournalSmart Materials and Structures
Volume9
Issue number2
DOIs
Publication statusPublished - Apr 2000

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    Blanchard, P. M., Burnett, J. G., Erry, G. R. G., Greenaway, A. H., Harrison, P., Mangan, B., Knight, J. C., Russell, P. S. J., Gander, M. J., McBride, R., & Jones, J. D. C. (2000). Two-dimensional bend sensing with a single, multi-core optical fibre. Smart Materials and Structures, 9(2), 132-140. https://doi.org/10.1088/0964-1726/9/2/302