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Applied Optics

Applied Optics


  • Vol. 33, Iss. 8 — Mar. 10, 1994
  • pp: 1345–1353

Optoelectronic data filter for selection and projection

Pericles A. Mitkas, Leo J. Irakliotis, Fred R. Beyette, Jr., Stuart A. Feld, and Carl W. Wilmsen  »View Author Affiliations

Applied Optics, Vol. 33, Issue 8, pp. 1345-1353 (1994)

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Database processing, like the majority of nonnumerical applications, exhibits a high degree of functional parallelism but does not require complex operations; therefore it is amenable to optical solutions. The architecture of an optoelectronic filter that is capable of performing selection and projection operations on a two-dimensional data array in a relational database environment is presented. The system receives input from a parallel optical memory, one page at a time, and performs logic operations by using optoelectronic smart pixels based on heterostructure phototransistors and vertical-cavity surface-emitting lasers. Combinations of and and xor gates are used to realize row–column masking and comparisons of input data against user-supplied search arguments. The main goal of the filter is to reduce the effective data rate between the highly parallel optical storage and the low input data rate conventional electronic computer, thus efficiently interfacing currently available photonic and electronic technologies.

© 1994 Optical Society of America

Original Manuscript: June 9, 1993
Revised Manuscript: August 25, 1993
Published: March 10, 1994

Pericles A. Mitkas, Leo J. Irakliotis, Fred R. Beyette, Stuart A. Feld, and Carl W. Wilmsen, "Optoelectronic data filter for selection and projection," Appl. Opt. 33, 1345-1353 (1994)

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