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Holographic memory updated by contradictory information: influence of low frequency attenuation on response stability
A.V. Pavlov  1

1 ITMO University, Saint-Petersburg, Russia

 PDF, 993 kB

DOI: 10.18287/2412-6179-CO-668

Pages: 728-736.

Full text of article: Russian language.

Abstract:
A 6f-scheme of Fourier holography with resonant architecture is considered, which implements memory replenishment with new information that contradicts the previously recorded. It is shown that the low-frequency attenuation due to the nonlinearity of the exposure characteristics of holographic recording media in the initial reference holographic image recorded in a narrow filtering range corresponding to the degradation in the correlation plane of the global maximum of the autocorrelation function below the lateral maxima leads to the response instability – an intermittent mode. It is shown that the intermittent mode corresponds to the restructuring of the autocorrelation function of a composite standard recorded in holograms from one range of values of the approximation model parameters to another. It is shown that the correlation length of the composite image recorded in holograms is an order parameter of the system; its rapid change precedes the loss of response stability and the transition to an unstable regime with intermittency. The results of numerical simulation are presented.

Keywords:
Fourier holography, holographic memory, associative memory, correlation function, correlation length, dynamical system, order parameter, stability, intermittency, non-monotonic logic, logic with exclusion.

Citation:
Pavlov AV. Holographic memory updated by contradictory information: influence of low frequency attenuation on response stability. Computer Optics 2020; 44(5): 728-736. DOI: 10.18287/2412-6179-CO-668.

Acknowledgements:
The work was funded by the Russian Foundation for Basic Research under grant # 18-01-00676-a.

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