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Proceedings Paper

Fluorescence-based distributed chemical sensing for structural health monitoring
Author(s): Elena I. Sinchenko; W. E. Keith Gibbs; Paul R. Stoddart
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Paper Abstract

Optical fiber distributed sensors hold great promise for corrosion monitoring in large structures. Systems based on absorption losses are relatively well developed, whereas fluorescence systems have been comparatively neglected due to the low efficiency of coupling light emitted in the cladding back into the core. This paper presents a model distributed corrosion sensor based on fluorescence detection by photon counting. The model predicts sufficient sensitivity for practical application under ideal conditions. Preliminary experimental results suggest that additional factors such as scattering at the core-cladding interface and mode distribution effects can have a significant deleterious effect on the performance in practice.

Paper Details

Date Published: 30 December 2008
PDF: 10 pages
Proc. SPIE 7268, Smart Structures, Devices, and Systems IV, 72681K (30 December 2008); doi: 10.1117/12.814703
Show Author Affiliations
Elena I. Sinchenko, Swinburne Univ. of Technology (Australia)
W. E. Keith Gibbs, Swinburne Univ. of Technology (Australia)
Paul R. Stoddart, Swinburne Univ. of Technology (Australia)

Published in SPIE Proceedings Vol. 7268:
Smart Structures, Devices, and Systems IV
Said Fares Al-Sarawi; Vijay K. Varadan; Neil Weste; Kourosh Kalantar-Zadeh, Editor(s)

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