Interference filters as nonlinear decision-making elements for three-spot pattern recognition and associative memories

L. Wang, V. Esch, R. Feinleib, L. Zhang, R. Jin, H. M. Chou, Robert W. Sprague, H. Angus Macleod, Galina Khitrova, Hyatt M. Gibbs, Kelvin Wagner, Demetri Psaltis

Research output: Contribution to journalLetter

14 Citations (Scopus)

Abstract

Simple patterns consisting of three spots (V and T) have been recognized by dividing, shifting, and recombining beams onto bistable ZnS interference filters. This experiment demonstrates AND-gate operation, cascading, and a moderate amount of parallelism, but a laser power of several watts was required and the response times were several milliseconds. An associative memory for fingerprint identification has been constructed using a VanderLugt correlator and an interference filter as a reflective thresholding device.

Original languageEnglish (US)
Pages (from-to)1715-1720
Number of pages6
JournalApplied Optics
Volume27
Issue number9
DOIs
StatePublished - 1988

Fingerprint

Response time (computer systems)
associative memory
Correlators
decision making
pattern recognition
Pattern recognition
Decision making
interference
filters
Data storage equipment
Lasers
correlators
Experiments
lasers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Wang, L., Esch, V., Feinleib, R., Zhang, L., Jin, R., Chou, H. M., ... Psaltis, D. (1988). Interference filters as nonlinear decision-making elements for three-spot pattern recognition and associative memories. Applied Optics, 27(9), 1715-1720. https://doi.org/10.1364/AO.27.001715

Interference filters as nonlinear decision-making elements for three-spot pattern recognition and associative memories. / Wang, L.; Esch, V.; Feinleib, R.; Zhang, L.; Jin, R.; Chou, H. M.; Sprague, Robert W.; Macleod, H. Angus; Khitrova, Galina; Gibbs, Hyatt M.; Wagner, Kelvin; Psaltis, Demetri.

In: Applied Optics, Vol. 27, No. 9, 1988, p. 1715-1720.

Research output: Contribution to journalLetter

Wang, L, Esch, V, Feinleib, R, Zhang, L, Jin, R, Chou, HM, Sprague, RW, Macleod, HA, Khitrova, G, Gibbs, HM, Wagner, K & Psaltis, D 1988, 'Interference filters as nonlinear decision-making elements for three-spot pattern recognition and associative memories', Applied Optics, vol. 27, no. 9, pp. 1715-1720. https://doi.org/10.1364/AO.27.001715
Wang, L. ; Esch, V. ; Feinleib, R. ; Zhang, L. ; Jin, R. ; Chou, H. M. ; Sprague, Robert W. ; Macleod, H. Angus ; Khitrova, Galina ; Gibbs, Hyatt M. ; Wagner, Kelvin ; Psaltis, Demetri. / Interference filters as nonlinear decision-making elements for three-spot pattern recognition and associative memories. In: Applied Optics. 1988 ; Vol. 27, No. 9. pp. 1715-1720.
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AU - Chou, H. M.

AU - Sprague, Robert W.

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AU - Gibbs, Hyatt M.

AU - Wagner, Kelvin

AU - Psaltis, Demetri

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