Dynamic holographic interconnects with analog weights in photorefractive crystals

Abdellatif Marrakchi; William Hubbard; Sarry F. Habiby; Jayantilal S. Patel

doi:10.1117/12.55594

1 March 1990 Dynamic holographic interconnects with analog weights in photorefractive crystals

Abdellatif Marrakchi, William Hubbard, Sarry F. Habiby, Jayantilal S. Patel

Author Affiliations +

Optical Engineering, Vol. 29, Issue 3, (March 1990). https://doi.org/10.1117/12.55594

Abstract

A photorefractive interconnect system with coherently erasable synapses (PISCES) is described. Comparing holographic erasure by intensity and phase modulation of the writing beams, we find that the time average technique is most amenable to system implementation. Calculations derived from a simple model of diffraction show that it is possible to find configurations that maximize the interconnection capacity. The PISCES includes Fresnel zone plates for spot array generation, amplitude and phase spatial light modulators based on liquid crystal technology, and detector arrays, in addition to the photorefractive crystal. Alternatives for each of these elements are described.

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Abdellatif Marrakchi, William Hubbard, Sarry F. Habiby, and Jayantilal S. Patel "Dynamic holographic interconnects with analog weights in photorefractive crystals," Optical Engineering 29(3), (1 March 1990). https://doi.org/10.1117/12.55594

Published: 1 March 1990

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