FIELD: radio engineering and communications.
SUBSTANCE: method comprises sequentially forming a spatially-coherent monochromatic light flux phase modulation of the flux space-time acoustic signal corresponding to an input electrical signal, the spatial Fourier transform of the luminous flux, the spatial filtering of the flow, and the inverse Fourier transform and spatially discrete detection light flux, wherein after spatial filtering the light flux propagating in ±1st diffraction order is modulated in phase in accordance with the function of the form
where K - dimensional constant coefficient; x, y - coordinates of the Fourier plane of the lens performing the Fourier transform, and the light flux propagating in the 0th diffraction order is shifted phase by an amount corresponding to one quarter wavelength of light.
EFFECT: decrease in distortion of output signals.
1 cl, 1 dwg
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