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Proceedings Paper

Real-time distortion measurement in a slab structure using hetero-core fiber optic embedded sensors
Author(s): Michiko Nishiyama; Hiroyuki Sasaki; Kazuhiro Watanabe
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Paper Abstract

A shape sensor technique has been developed for the real-time measurement of distortion sensitive plane slab structures using a hetero-core splice fiber optic sensor. It has been found that the optical loss of hetero-core fiber sensing element monotonically increased with bending action of hetero-core portion. This sensor was applied to measure distortion in plane shape. In addition to the unique sensing capability of hetero-core sensors, we employed an LD/PD system in order to realize a cost effective real-time measurements which enabled us to carry out an accurate detection with a small standard deviation in the temporal stability of 0.004V. The developed plane shape sensor consisted of 3 hetero-core sensor elements properly arranged with 45-degree crossing angles, with producing a displacement resolution of 0.5mm for 20mm dynamic range.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624214
Show Author Affiliations
Michiko Nishiyama, SOKA Univ. (Japan)
Hiroyuki Sasaki, SOKA Univ. (Japan)
Kazuhiro Watanabe, SOKA Univ. (Japan)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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