Open AccessAre there bound states in the continuum in a dielectric ring?
Author(s) -
Daria V. Bochek,
Nikolay S. Solodovchenko,
K. B. Samusev,
М. Ф. Лимонов
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2015/1/012017
Subject(s) - dielectric , physics , bound state , electromagnetic field , trapping , coaxial , optics , condensed matter physics , classical mechanics , quantum mechanics , telecommunications , ecology , computer science , biology
Trapping and confining electromagnetic waves is important in both basic research and a variety of applications. For these purposes, various physical mechanisms are exploited including bound states in the continuum, which have been actively investigated recently. Bound states in the continuum have been observed in various objects consisting of both one and a number of dielectric structures. In particular, these photonic states were observed in high-contrast dielectric cylinders in the regime of strong eigenmode coupling, which leads to destructive interference in the far-field zone. In this article, we present the results of a study of bound states in a continuum in a dielectric ring, i.e. cylinder with coaxial air hole. The dependence of the quality factor Q on the normalized diameter of the hole is discussed.