Abstract:
The propagation of spin waves (SWs) in a structure consisting of two waveguides arranged in the horizontal plane with a gap between them and one waveguide positioned above and perpendicular to them is analyzed. The method of micromagnetic modeling is used to identify the mechanism for controlling the spatial structure of a spin-wave beam and its splitting between channels of an array of microwaveguides based on yttrium iron garnet (YIG). Specifically, it is demonstrated that the direction of propagation of SWs in the array may be altered by adjusting the frequency fed to the central channels of one of the layers. The power concentration modes for a signal encoded as the amplitude and phase of SWs at the ends of the central channels with the possibility of their separate activation and control over the signal at the ends of microwaveguides of the upper array layer are examined in detail. A microwaveguide array of this kind may thus be regarded as a controlled logic device or a multichannel power divider.
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