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Optics Letters

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  • Vol. 28, Iss. 7 — Apr. 1, 2003
  • pp: 525–527

Superparallel holographic correlator for ultrafast database searches

M. S. Shahriar, R. Tripathi, M. Kleinschmit, J. Donoghue, W. Weathers, M. Huq, and J. T. Shen  »View Author Affiliations


Optics Letters, Vol. 28, Issue 7, pp. 525-527 (2003)
http://dx.doi.org/10.1364/OL.28.000525


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Abstract

We describe a superparallel holographic optical correlator that performs two-dimensional spatial and angular multiplexing simultaneously. The key step in this architecture is the use of a holographic multiplexer to split a query image into many copies before it applies them to the holographic database. A holographic demultiplexer, in conjunction with an aperture, is used to identify the location and the angle of the brightest correlation peak. This architecture uses only O(√N) detector elements to search through N unsorted images in a single query. We demonstrate the basic features of this architecture, using three spatial locations with eight angle-multiplexed images in each location.

© 2003 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(100.0100) Image processing : Image processing

Citation
M. S. Shahriar, R. Tripathi, M. Kleinschmit, J. Donoghue, W. Weathers, M. Huq, and J. T. Shen, "Superparallel holographic correlator for ultrafast database searches," Opt. Lett. 28, 525-527 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-7-525


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