30 December 1993 Multiplexing of electronically scanned white-light interferometric strain sensors based on HB fibers
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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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Waclaw Urbanczyk, Wojtek J. Bock, 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); doi: 10.1117/12.165905; https://doi.org/10.1117/12.165905
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