Open AccessBound states in the continuum in dielectric waveguides of finite size
Author(s) -
Aleksandra A. Kutuzova,
Mikhail V. Rybin
Publication year - 2020
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 - 10.1088/1742-6596/1697/1/012159
Subject(s) - rod , dielectric , condensed matter physics , silicon , materials science , symmetry (geometry) , bound state , physics , optics , electromagnetic field , optoelectronics , geometry , quantum mechanics , mathematics , medicine , alternative medicine , pathology
We study bound states in the continuum related supercavity modes in finite lattices of silicon rods. Two low-frequency symmetry-protected modes are examined. We find that Q factor has almost cubic dependence on the rod number and 50 rods are enough for Q exceeds 10 4 . We discuss possible applications of these supercavity modes based on their electromagnetic field pattern. The structure surrounded by liquid media keeps its functionality by substitution silicon rods with rods made of Ge-Sb-Te.