This article is cited in 3 papers

Special issue on optical processing of information

Optoelectronic processors with scanning CCD photodetectors

N. A. Esepkina, A. P. Lavrov, V. N. Anan'ev, V. S. Blagodarnyi, S. I. Ivanov, M. I. Mansyrev, S. A. Molodyakov

Saint-Petersburg State Polytechnical University

Abstract: Two new types of optoelectronic radio-signal processors were investigated. Charge-coupled device (CCD) photodetectors are used in these processors under continuous scanning conditions, i.e. in a time delay and storage mode. One of these processors is based on a CCD photodetector array with a reference-signal amplitude transparency and the other is an adaptive acousto-optical signal processor with linear frequency modulation. The processor with the transparency performs multichannel discrete–analogue convolution of an input signal with a corresponding kernel of the transformation determined by the transparency. If a light source is an array of light-emitting diodes of special (stripe) geometry, the optical stages of the processor can be made from optical fibre components and the whole processor then becomes a rigid 'sandwich' (a compact hybrid optoelectronic microcircuit). A report is given also of a study of a prototype processor with optical fibre components for the reception of signals from a system with antenna aperture synthesis, which forms a radio image of the Earth.

PACS: 42.79.Hp, 42.79.Jq, 85.60.Dw, 95.55.Aq

Received: 30.07.1994

 English version: Quantum Electronics, 1995, 25:10, 956–961

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