Adaptive two-dimensional quadratic associative memory using holographic lenslet arrays

Abstract

Optical implementation of two-dimensional (2-D) quadratic associative memory (QAM) that needs parallel N6 weighted interconnections is described. We show that fully adaptive interconnections for the 2-D QAM are realizable by using two 2-D holographic lenslet arrays and two spatial light modulators (SLM’s). Thus two extensions of our previous work1 are proposed; they are learning capability and storage of 2-D images in QAM. We also show basic experimental results for the 2-D QAM.