Single-channel magnonic demultiplexer based on a transversely confined coupled waveguide and a Mach–Zehnder interferometer

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The propagation of spin waves in a system composed of a Mach–Zehnder interferometer (MZI) and a transversally confined waveguide based on yttrium iron garnet has been investigated. Micromagnetic simulations demonstrate 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 transversally confined waveguide, as well as variations in the waveguide width, affect both the phase shift of the propagating signal and the coupling efficiency in the interaction region. The demultiplexing characteristics of the structure are presented, revealing its potential for spatial–frequency signal selection. The proposed coupled waveguide–MZI system provides a basis for the implementation of logic operations and may be employed in integrated circuits based on magnonic principles.

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Sobre autores

V. Moshkov

Saratov National Research State University named after N.G. Chernyshevsky

Autor responsável pela correspondência
Email: moshkovva2003@gmail.com
Rússia, Astrakhanskaya Str., 83, Saratov, 410012

A. Martyshkin

Saratov National Research State University named after N.G. Chernyshevsky

Email: moshkovva2003@gmail.com
Rússia, Astrakhanskaya Str., 83, Saratov, 410012

A. Sadovnikov

Saratov National Research State University named after N.G. Chernyshevsky

Email: moshkovva2003@gmail.com
Rússia, Astrakhanskaya Str., 83, Saratov, 410012

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2. Fig. 1. Schematic representation of the system of coupled Mach-Zehnder interferometer and transversely limited waveguide (a) and the distribution of the internal magnetic field Heff(x, y) (b) and Heff(ξ) (c).

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3. Fig. 2. Spatial maps of the intensity distribution mz(x, y) – the component of the dynamic magnetization of the PMSSW, normalized to the saturation magnetization modulus M0, at frequencies: f1 = 5.225 GHz (a), f2 = 5.3 GHz (b), f3 = 5.325 GHz (c) and f4 = 5.375 GHz (d).

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4. Fig. 3. Power of the spin-wave signal at ports P2, P3, P4 (a) and a fragment of the logical truth table (I – true, F – false) (b).

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