Share Email Print

Optical Engineering

Advanced ultra-high-capacity optical random access memory and pattern recognition techniques
Author(s): Hua-Kuang Liu; Yahong Jin; Neville I. Marzwell
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

The architecture and mathematical analysis of a new multichannel multistage holographic optical random access memory (HORAM) architecture and an experimental demonstration of its feasibility are presented. The new HORAM can be used for ultra-high-capacity storage and high-speed random retrieval of information. A two-stage HORAM, using a Dammann grating and a multifocus holographic lens, clearly shows the capability of storing 2000 holographic matched filters. The functional requirements for key optical elements including laser sources, spatial light modulators, and electro-optical shutters for making a desired practical and compact HORAM are described. The potential extension of the HORAM system for multiple-channel optical pattern recognition, classification, and image restoration are described.

Paper Details

Date Published: 1 March 1998
PDF: 10 pages
Opt. Eng. 37(3) doi: 10.1117/1.601910
Published in: Optical Engineering Volume 37, Issue 3
Show Author Affiliations
Hua-Kuang Liu, Univ. of South Alabama (United States)
Yahong Jin, Lumin, Inc. (United States)
Neville I. Marzwell, Jet Propulsion Lab. (United States)

© SPIE. Terms of Use
Back to Top