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Proceedings Paper

Shared-hardware alternating operation of a superparallel holographic optical correlator and a superparallel holographic RAM
Author(s): Mark Andrews; M. Selim Shahriar; Renu Tripathi; Mohammad Huq; John T. Shen
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Paper Abstract

For practical pattern recognition and tracking systems, it is often useful to have a high-speed random access memory (RAM), which complements a holographic correlator. Recently, we have demonstrated a super-parallel holographic optical correlator, which uniquely identifies N images from a database using only 2 number of detector elements. In this paper, we show how this correlator architecture, operated in reverse, may be used to realize a super-parallel holographic random access memory. We present preliminary results establishing the feasibility of the super-parallel holographic random access memory, and show that essentially the same set of hardware can be operated either as the super-parallel holographic optical correlator or as a super-parallel holographic random access memory, with a minor reorientation of some of the elements in real time. This hybrid device thus eliminates the need for a separate random access memory for a holographic correlator based target recognition and tracking system.

Paper Details

Date Published: 17 June 2004
PDF: 9 pages
Proc. SPIE 5362, Advanced Optical and Quantum Memories and Computing, (17 June 2004); doi: 10.1117/12.543263
Show Author Affiliations
Mark Andrews, Digital Optics Technologies, Inc. (United States)
M. Selim Shahriar, Northwestern Univ. (United States)
Renu Tripathi, Northwestern Univ. (United States)
Mohammad Huq, Digital Optics Technologies, Inc. (United States)
John T. Shen, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 5362:
Advanced Optical and Quantum Memories and Computing
Hans J. Coufal; Zameer U. Hasan, Editor(s)

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