Abstract

A spatial-temporal correlator in which the spectral components of light behave as independent information carriers working simultaneously is described. The use of spatially coherent light permits to process the amplitude and the phase of an input data through a chromatic Fourier Hologram acting as a matched filter. A rough estimation of the S/N ratio shows a great increase compared to that obtained in conventional monochromatic correlators. It could be applied in pattern recognition to reduce the so-called false alarms.

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