• DocumentCode
    925429
  • Title

    Ultra-high-sensitivity two-dimensional bend sensor

  • Author

    Cranch, G.A. ; Flockhart, G.M.H. ; MacPherson, W.N. ; Barton, J.S. ; Kirkendall, C.K.

  • Volume
    42
  • Issue
    9
  • fYear
    2006
  • fDate
    4/27/2006 12:00:00 AM
  • Firstpage
    520
  • Lastpage
    522
  • Abstract
    A multicore fibre Fabry-Perot-based strain sensor interrogated with tandem interferometry for bend measurement is described. Curvature in two dimensions is obtained by measuring the difference in strain between three co-located low finesse Fabry-Perot interferometers formed in each core of the fibre by pairs of Bragg gratings. This sensor provides a responsivity enhancement of up to 30 times that of a previously reported fibre Bragg grating based sensor. Strain resolutions of 0.6 nε/Hz12/ above 1 Hz are demonstrated, which corresponds to a curvature resolution of ∼0.012 km-1/Hz12/.
  • Keywords
    Bragg gratings; Fabry-Perot interferometers; curvature measurement; fibre optic sensors; strain sensors; 2D bend sensor; Fabry-Perot interferometers; bend measurement; curvature resolution; fibre Bragg grating; multicore fibre strain sensor; ultra-high-sensitivity sensor;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:20060731
  • Filename
    1628525
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=925429