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Proceedings Paper

Multiplexing of electronically scanned white-light interferometric strain sensors based on HB fibers
Author(s): Waclaw Urbanczyk; Wojtek J. Bock; Marek B. Zaremba
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Paper Abstract

Application of electronic scanning to a sequence of coherence-multiplexed strain sensors is proposed in this paper. The sensors consist of a cascade of HB fibers spliced with their polarization axes rotated by certain angles. We theoretically analyzed the behavior of such chains as a function of their alignment and found the optimal alignment ensuring readout of every sensor with the maximum S/N ratio. The performance of parallel and serial multiplexing configurations was experimentally studied. As a receiving interferometer we used a Wollaston prism followed by a CCD camera and an image processing system while a stepped delay line made of calcite and crystalline quartz was used to match the group delays between sensing and receiving interferometers.

Paper Details

Date Published: 30 December 1993
PDF: 9 pages
Proc. SPIE 2071, Distributed and Multiplexed Fiber Optic Sensors III, (30 December 1993); doi: 10.1117/12.165905
Show Author Affiliations
Waclaw Urbanczyk, Univ. du Quebec/Hull (Canada)
Wojtek J. Bock, Univ. du Quebec/Hull (Canada)
Marek B. Zaremba, Univ. du Quebec/Hull (Canada)

Published in SPIE Proceedings Vol. 2071:
Distributed and Multiplexed Fiber Optic Sensors III
Alan D. Kersey; John P. Dakin, Editor(s)

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