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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Optical processing and computing based on the four-wave mixing with time delay

Eduard A. Manykin, Sergey M. Zakharov

Published Dec 27, 1996• 2 citations
Publisher

Abstract

The principles of digital data processing on the basis of a photon echo phenomenon in a resonant medium are considered. DIfferent schemes of an optical processor for vector-matrix multiplication are proposed: a processor with a pixel structure and a processor holographic type. The using of the digital multiplication by the analog convolution algorithm is suggested.

DOI
10.1117/12.262546

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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Sep 26, 1997•1 citation
The principles of digital data processing on the basis of a photon echo phenomenon in a resonant medium are considered. DIfferent schemes of an optical processor for vector-matrix multiplication are proposed: a processor with a pixel structure and a processor holographic type. The using of the digital multiplication by the analog convolution algorithm is suggested.
Principles for analog and digital optical processing based on the two- pulse photon echo (PE) phenomenon are considered. Various architecture designs of optical pattern recognition systems and optical processors for analog and digital processing are discussed. Also various schemes of digital processors for vector-matrix multiplication with the pixel structure and of holographic type are suggested. These realizations depend on using of digital temporal or spatial mixed binary multiplication based on the PE.
Principles for optical digital data processing based on photon echo phenomenon in resonant media are considered. The various schemes of optical processors realization with the pixel structure and of holographic type based on using the digital multiplication by the analog convolution algorithm is suggested. Methods of optical data flow control of digital informational on the basis of photon echo phenomenon are discussed. Interconnections' switching schemes in a sequential in time and parallel in space codes are suggested.
Principles and schemes of optical information processing, transmission and storage based on the ultra-short laser impulses' interaction with doped rare-earth ions' crystals are considered. Nonlinear optical effect as a photon echo is discussed. This effect is widely used for the investigation of kinetic processing involving the relaxation of elementary excitations in solids. Possibility of parallel processing of large data arrays in the form of two and three dimensional images and flexibility in controlling data flows are represented. ARchitecture of the various photon echo digital operation, including laser digital vector and matrix-vector multiplication are analyzed. Advantages of optical coherent phenomena for quantum computing are discussed.
Inherent possibilities of digital processing of broadband signals and images envisaging further development are considered. The greatest problems in this regard arise when we attempt to perform such integrated transformations as Fourier convolution and transformation, requiring a great many of operations of multiplication and addition. While amplification of velocity of switching of the basic elements has a theoretical limit, the degree of paralleling of multiprocessor systems is limited by the complexity of control devices. One of the ways of essential amplification of the processing systems' speed consists in execution of integrated transformations via specialized analog processors, which become a constituent of the common multiprocessor system. The role of such analog devices can be taken by echo-processors, among which the photon echo-processor (PEP) exceeds its analogs by many basic parameters. The latter has an important advantage, i.e. an ability to process both one-dimensional signals, and fields and images within one step of its work.