Кафедра фізичних основ електронної техніки (ФОЕТ)

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https://openarchive.nure.ua/handle/document/54

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Перегляд Кафедра фізичних основ електронної техніки (ФОЕТ) за темою "Bragg waveguide"

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  • Зображення мініатюри
    Публікація
    Localized field enhancement in slow-wave modes of modified Bragg waveguide
    (IEEE, 2017) Odarenko, E. N.; Sashkova, Y. V.; Shmat'ko, A. A.
    Modified scheme of Bragg reflection waveguide with additional layers between the hollow core and cladding is considered. Dispersion diagrams are calculated on the base of dispersion equations solutions for ordinary and modified Bragg waveguides. Slow-wave regimes are considered for both kinds of structure. Electric field spatial distributions for localized slowwave modes of Bragg reflection waveguide are obtained. It is shown that modified scheme of Bragg waveguide provides the enhanced localization of the surface modes field in the hollow core. Therefore modified Bragg waveguide is the promising electrodynamic system not only for laser-driven accelerators but also for the vacuum electron devices where usual slow-wave structures are unconvenient.
  • Зображення мініатюри
    Публікація
    Photonic Crystal and Bragg Waveguides for THz Electron Devices
    (IEEE, 2016) Odarenko, E. N.; Shmat'ko, A. A.
    Dispersion characteristics and spatial field distributions in the photonic crystal waveguides and Bragg ones are considered. It is shown that these waveguides can be used as slow-wave systems in the THz vacuum electron devices.
  • Зображення мініатюри
    Публікація
    The Effect of Additional Layers Parameters on the Modifided Bragg Waveguide Characteristics
    (IEEE, 2017) Sashkova, Y. V.; Odarenko, E. N.
    Bragg waveguide with additional layers between hollow core and periodic cladding is considered. On the base of dispersion equation solutions dispersion diagrams are obtained. The transversal spatial distributions of the electric field intensity are shown. The characteristics of Bragg waveguide respect to additional layer thickness and permittivity are considered. It is shown that increase of additional layers thickness results in increase of slow-waves number. Also field intensity decay in channel is reduced. Number of slow-waves increases respect to additional layers permittivity too. But distribution of the electric field intensity in the channel changes insignificantly. So one can tune additional layers parameters to get expected Bragg waveguide characteristics.