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Title: Directional multimode coupler for planar magnonics: Side-coupled magnetic stripes

We experimentally demonstrate spin waves coupling in two laterally adjacent magnetic stripes. By the means of Brillouin light scattering spectroscopy, we show that the coupling efficiency depends both on the magnonic waveguides' geometry and the characteristics of spin-wave modes. In particular, the lateral confinement of coupled yttrium-iron-garnet stripes enables the possibility of control over the spin-wave propagation characteristics. Numerical simulations (in time domain and frequency domain) reveal the nature of intermodal coupling between two magnonic stripes. The proposed topology of multimode magnonic coupler can be utilized as a building block for fabrication of integrated parallel functional and logic devices such as the frequency selective directional coupler or tunable splitter, enabling a number of potential applications for planar magnonics.
Authors:
;  [1] ;  [2] ; ; ; ;  [1]
  1. Laboratory “Metamaterials,” Saratov State University, Saratov 410012 (Russian Federation)
  2. (Russian Federation)
Publication Date:
OSTI Identifier:
22486093
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 20; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPUTERIZED SIMULATION; CONFINEMENT; CONTROL; COUPLING; EFFICIENCY; EQUIPMENT; FABRICATION; FERRITE GARNETS; GEOMETRY; LIGHT SCATTERING; SPECTROSCOPY; SPIN WAVES; TOPOLOGY; WAVEGUIDES; YTTRIUM