Optical Implementation of Nonlinear Holographic Associative Memory using LCTV Spatial Light Modulator

LCTV 공간 광 변조기를 이용한 비선형 홀로그래픽 연상메모리의 광학적 실현

In this paper, we implement optical holographic associative memory based on the two-dimensional neural network model by using commercial LCTV as a spatial light modulator. The system consists of the simple Vander Lugt correlator utilizing plane Fourier hologram and the pinhole array. The associated output signal is detected on a two-dimensional CCD camera and electronically thresholded and fed back to the input plane of the system. Through the experimental demonstration of nonlinear holographic associative memory, it is suggested that commercial LCTV can be used as a new coherent spatial light modurator.