Distribution of the Field of Whispering-Gallery Modes in a Radially Nonuniform Two-Layer Cylindrical Dielectric Resonator |
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Authors: | Yu V Prokopenko Yu F Filippov I A Shipilova |
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Institution: | (1) A. Ya. Usikov Institute of Radiophysics and Electronics, National Academy of Sciences of Ukraine, Kharkov, Ukraine |
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Abstract: | We study eigenmodes of a radially nonuniform two-layer cylindrical dielectric resonator bounded by two perfectly conducting
planes at its ends. Formulas for the electromagnetic-field components of the modes and the characteristic equation of the
resonator made of anisotropic dielectrics and immersed in an anisotropic medium are obtained. Resonators with various whispering-gallery
modes are studied numerically in the 8-mm wavelength range. The distributions of the axial field component of the eigenmodes
over the radial coordinate are given for various values of the radius, dielectric permittivity, and loss tangent of the inner
layer of the resonator. The influence of the inner-layer parameters on the behavior of field distribution over the radius
and on the spectral and energy characteristics of the resonator are analyzed.
Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 51, No. 7, pp. 622–632, July 2008. |
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