Bound states in the continuum in whispering gallery resonators with pointlike impurities

Autor: Figueroa, M. A., Juricic, Vladimir, Orellana, P. A.
Rok vydání: 2024
Předmět:
Zdroj: Sci Rep 14, 27929 (2024)
Druh dokumentu: Working Paper
DOI: 10.1038/s41598-024-79094-8
Popis: Whispering gallery resonators offer a versatile platform for manipulating the photonic transmission. Here, we study such a system, including periodically distributed pointlike impurities along the resonator with ring geometry. Based on an exact expression for the transmission probability we obtain here, we demonstrate that the bound states in the continuum (BICs) form from the whispering gallery modes at the high-symmetry momenta in the ring's Brillouin zone. Furthermore, the presence of the inversion symmetry allows for a selective decoupling of resonant states, favoring the BIC generation and, therefore, allowing extra tunability in the optical transmission of the system.
Comment: 6 pages, 4 figures, supplementary material as ancillary file, published version
Databáze: arXiv
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