Abstract

A novel adaptive resonance (ART) device, based on holographic information processing in a phase-conjugating crystal, allows pattern retrieval in a resonating loop utilizing angle-multiplexed reference beams. A reset mechanism allows an ART search strategy by rejecting beams as needed. The design is inspired by a non-learning optical associative memory, the holographic optical resonator,¹ but does learn and uses information the other device discards. The learning capability results from replacing the resonator’s fixed hologram with a barium titanate crystal. This device offers higher information storage density than do alternative ART implementations.^2-5

© 1992 Optical Society of America