Multiplexing of electronically scanned white-light interferometric strain sensors based on HB fibers

Waclaw Urbanczyk; Wojtek J. Bock; Marek B. Zaremba

doi:10.1117/12.165905

30 December 1993 Multiplexing of electronically scanned white-light interferometric strain sensors based on HB fibers

Waclaw Urbanczyk, Wojtek J. Bock, Marek B. Zaremba

Proceedings Volume 2071, Distributed and Multiplexed Fiber Optic Sensors III; (1993) https://doi.org/10.1117/12.165905
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

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.

Citation Download Citation

Waclaw Urbanczyk, Wojtek J. Bock, and Marek B. Zaremba "Multiplexing of electronically scanned white-light interferometric strain sensors based on HB fibers", Proc. SPIE 2071, Distributed and Multiplexed Fiber Optic Sensors III, (30 December 1993); https://doi.org/10.1117/12.165905

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