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Optical Engineering

Massive parallel optical pattern recognition and retrieval via a two-stage high-capacity multichannel holographic random access memory system
Author(s): Luzhong Cai; Hua-Kuang Liu
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Paper Abstract

The multistage holographic optical random access memory (HoRAM) system reported recently by Liu et al. provides a new degree of freedom for improving storage capacity. we further present a theoretical and practical analysis of the HoRAM system with experimental results. our discussions include the system design and geometrical requirements, its applications for multichannel pattern recognition and associative memory, the 2-D and 3-D information storage capacity, and multichannel image storage and retrieval via VanderLugt correlator (VLC) filters and joint transform holograms. A series of experiments are performed to demonstrate the feasibility of the multichannel pattern recognition and image retrieval with both the VLC and joint transform correlator (JTC) architectures. The experimental results with as many as 2025 channels show good agreement with the theoretical analysis.

Paper Details

Date Published: 1 February 2000
PDF: 8 pages
Opt. Eng. 39(2) doi: 10.1117/1.602378
Published in: Optical Engineering Volume 39, Issue 2
Show Author Affiliations
Luzhong Cai, Shandong Univ. (China)
Hua-Kuang Liu, Lumin, Inc. (United States)


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