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

Wang, L. and Esch, V. and Feinleib, R. and Zhang, L. and Jin, R. and Chou, H. M. and Sprague, Robert W. and Macleod, H. Angus and Khitrova, G. and Gibbs, Hyatt M. and Wagner, Kelvin and Psaltis, Demetri (1988) Interference filters as nonlinear decision-making elements for three-spot pattern recognition and associative memories. Applied Optics, 27 (9). pp. 1715-1720. ISSN 0003-6935. https://resolver.caltech.edu/CaltechAUTHORS:20120615-115025571

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Abstract

Simple patterns consisting of three spots (V and Γ) 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.

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Article

Related URLs:

URL	URL Type	Description
http://dx.doi.org/10.1364/AO.27.001715	DOI	Article
http://www.opticsinfobase.org/ao/abstract.cfm?uri=ao-27-9-1715	Publisher	Article

Additional Information:

© 1988 Optical Society of America. Received 28 January 1988. Support from AFOSR, ARO, NSF, RADC/DARPA, SDIO, and the Optical Circuitry Cooperative is gratefully acknowledged. Special thanks to J. McCann for the phase gratings.

Funders:

Funding Agency	Grant Number
Air Force Office of Scientific Research (AFOSR)	UNSPECIFIED
Army Research Office (ARO)	UNSPECIFIED
NSF	UNSPECIFIED
Rome Air Development Center	UNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)	UNSPECIFIED
Strategic Defense Initiative Organization (SDIO)	UNSPECIFIED
Optical Circuitry Cooperative	UNSPECIFIED

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CaltechAUTHORS:20120615-115025571

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https://resolver.caltech.edu/CaltechAUTHORS:20120615-115025571

Official Citation:

L. Wang, V. Esch, R. Feinleib, L. Zhang, R. Jin, H. Chou, R. Sprague, H. Macleod, G. Khitrova, H. Gibbs, K. Wagner, and D. Psaltis, "Interference filters as nonlinear decision-making elements for three-spot pattern recognition and associative memories," Appl. Opt. 27, 1715-1720 (1988).

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31916

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CaltechAUTHORS

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Aucoeur Ngo

Deposited On:

18 Jun 2012 14:51

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03 Oct 2019 03:56

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