UA99596C2 - Device for disintegration and integration of narrowband signals - Google Patents

Abstract

A device for disintegration and integration of narrowband optical signals as transverse electromagnetic waves linear-polarized in one plane, differed by central waves, comprises a series of periodic diffraction gratings. Slits of each grating are perpendicular to the plane of polarization of electromagnetic waves aligned with the plane of gravitation. Each grating is made with capability of spatial separation in predetermined direction of one signal from the group of signals co-propagated in one direction, or integration of spatially separated signals propagated in predetermined directions, to group of signals co-propagated in one direction. The gratings are located so that while separating the signals the group of signals falls onto next grating which doesn’t comprise signal separated on the previous grating, and in integration of signals the group of integrated on the previous grating signals falls onto the next grating. The diffraction grating is a flat anharmonic diffraction grating generated on the surface of metal or semiconductor with high transition factor and made with opportunity of signal branching with a preset central wavelength to the determined non-mirror diffraction order with maximum possible intensity and full suppression of mirror reflection of this signal. A period of grating (s and angle of incidence ( are connected with central wavelength (s of the signal deriving due to resonance diffraction on the s-th grating by ratio EMBED Equation.3 , wherein - imaginary part of surface impedance of the grating conducting medium, r – number of resonance spectrum corresponding to signal branching to the determined non-mirror diffraction order, and grating Fourier spectrum amplitude ratio is determined such that energy flux which is branched to the determined non-mirror diffraction order has maximum possible value.