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Proceedings Paper

Multiplexing of fiber optic sensors for stress measurements in civil engineering applications
Author(s): Wojtek J. Bock; Waclaw Urbanczyk; Marc R. H. Voet; Andrzej Barwicz
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Paper Abstract

We present a polarimetric and interferometric fiber-optic sensor systems employing highly birefringent fibers for stress monitoring in civil engineering applications. Both systems are designed to be used with concrete-embeddable pressure c ells, optimized for stress measurement inside a concrete medium and equipped with a direct read-out of its inside pressure using an internally incorporated all-fiber sensor. In its present form the polarimetric system contains up to four space division multiplexed sensors. An overall system accuracy, including temperature drift in a wide range of temperatures is better than 1% at pressures up to 40 MPa. A concept of coherence multiplexing was applied in the interferometric system. We built and tested the system composed of three serially connected temperature-compensated pressure sensors.

Paper Details

Date Published: 24 September 1998
PDF: 7 pages
Proc. SPIE 3414, Opto-Contact: Workshop on Technology Transfers, Start-Up Opportunities,and Strategic Alliances, (24 September 1998); doi: 10.1117/12.323513
Show Author Affiliations
Wojtek J. Bock, Univ. du Quebec a Hull (Canada)
Waclaw Urbanczyk, Technical Univ. of Wroclaw (Poland)
Marc R. H. Voet, Glotzl GmbH (Belgium)
Andrzej Barwicz, Univ. du Quebec a Trois-Rivieres (Canada)


Published in SPIE Proceedings Vol. 3414:
Opto-Contact: Workshop on Technology Transfers, Start-Up Opportunities,and Strategic Alliances
Robert J. L. Corriveau; M. J. Soileau; Michel Auger, Editor(s)

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