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Gabor/Bragg neural association in information storage systems

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Abstract

Volume multiplex holographic storage has been investigated by many authors from the point of view of random angular addressing in optical disk uses, automatic pattern recognition, etc. However, little attention has been given to the specific features of associative memory introduced by Bragg angular selectivity.1 Here we discuss the fundamental tradeoff between the material2 and the geometrical limits of volume holographic information storage capacity as well as the specific types of neural architectures introduced by Bragg holography. It is shown that, within the same optical system geometry, we can obtain entirely different types (Gabor or Bragg) of neural association, depending on the value of the Bragg selectivity.

© 1991 Optical Society of America

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