Digital spatial-domain multiplexing technique for low cost, large scale interferometric sensor arrays

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Digital spatial-domain multiplexing technique for low cost, large scale interferometric sensor arrays

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A novel multiplexing technique for interferometric optical fibre sensors is reported in this paper. It makes use of digital electronic image processing techniques to greatly reduce the number of fibre optical devices in the network system. The basic system set-up and phase-retrieval algorithm are described. A computer simulation and preliminary experimental demonstration of system performance are presented. (5 pages)

Inspec keywords: image sampling; Fourier transform optics; fibre optic sensors; light interferometers; intelligent structures; intelligent sensors; space division multiplexing; image coding; image restoration; speckle; CCD image sensors

Subjects: Intelligent sensors; Pattern recognition; Fibre optic sensors; fibre gyros; Optical interferometry; Image processing and restoration; Computer vision and image processing techniques; Optical information, image and video signal processing; Fibre optic sensors; Fibre optic sensors

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