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Optical Engineering

Dynamic holographic interconnects with analog weights in photorefractive crystals
Author(s): Abdellatif Marrakchi; William Hubbard; Sarry F. Habiby; Jayantilal S. Patel
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Paper 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.

Paper Details

Date Published: 1 March 1990
PDF: 10 pages
Opt. Eng. 29(3) doi: 10.1117/12.55594
Published in: Optical Engineering Volume 29, Issue 3
Show Author Affiliations
Abdellatif Marrakchi, Bell Communications Research (United States)
William Hubbard, Bell Communications Research (United States)
Sarry F. Habiby, Bell Communications Research (United States)
Jayantilal S. Patel, Bell Communications Research (United States)

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