Single-Channel Magnonic Demultiplexer Based on Coupled Laterally Confined Waveguide and Mach-Zehnder Interferometer

Spin wave propagation in a system consisting of a Mach-Zehnder interferometer (MZI) and a laterally confined waveguide based on yttrium iron garnet is investigated. Micromagnetic simulations show the possibility of using the system as a single-channel demultiplexer for spin-wave signals. It is shown that the distance between the MZI and the laterally confined waveguide, as well as changes in its width, manifest themselves both in the phase shift of the propagating signal and in the coupling efficiency in the interaction area. The demultiplexing characteristics of the structure allow implementing spatially-frequency signal selection. The proposed interconnected waveguide-MZI system demonstrates the foundation for realizing multiple logic operations and can be used in integrated circuits based on magnonic principles.