Massive parallel optical pattern recognition and retrieval via a two-stage high-capacity multichannel holographic random access memory system

Luzhong Cai; Hua-Kuang Liu

doi:10.1117/1.602378

1 February 2000 Massive parallel optical pattern recognition and retrieval via a two-stage high-capacity multichannel holographic random access memory system

Luzhong Cai, Hua-Kuang Liu

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Optical Engineering, Vol. 39, Issue 2, (February 2000). https://doi.org/10.1117/1.602378

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.

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Luzhong Cai and Hua-Kuang Liu "Massive parallel optical pattern recognition and retrieval via a two-stage high-capacity multichannel holographic random access memory system," Optical Engineering 39(2), (1 February 2000). https://doi.org/10.1117/1.602378

Published: 1 February 2000

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