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Proceedings Paper

Structural sensing using a fiber laser strain sensor
Author(s): Serge Melle; Trenton G. Coroy; Shawn E. Karr; A. Tino Alavie; Raymond M. Measures
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Paper Abstract

The development of a fiber laser sensor which permits efficient interrogation of Bragg grating sensors is reported. The fiber laser is linewidth-narrowed and tuned by a remotely located, sensing Bragg grating that is surface adhered to a structure under test. The Bragg grating- tuned fiber laser is used in conjunction with a passive wavelength demodulation system (WDS) to form a fiber laser strain sensor system (FLS3), which was used to track both static and dynamic strains on an aluminum beam. The FLS3 could measure strains with a resolution of approximately 4 (mu) (epsilon) and a bandwidth of 13.0 kHz. The viability of the laser strain sensor concept lends itself to the development of a compact, potentially embeddable smart sensor that would output demodulated sensing data directly to the user.

Paper Details

Date Published: 26 March 1993
PDF: 10 pages
Proc. SPIE 1798, Fiber Optic Smart Structures and Skins V, (26 March 1993); doi: 10.1117/12.141327
Show Author Affiliations
Serge Melle, Univ. of Toronto (Bolivia)
Trenton G. Coroy, Univ. of Toronto (Canada)
Shawn E. Karr, Univ. of Toronto (Canada)
A. Tino Alavie, Univ. of Toronto (Canada)
Raymond M. Measures, Univ. of Toronto (Canada)

Published in SPIE Proceedings Vol. 1798:
Fiber Optic Smart Structures and Skins V
Richard O. Claus; Robert S. Rogowski, Editor(s)

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