Unidirectional guided resonances in anisotropic waveguides
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hdl:2117/366046
Tipus de documentArticle
Data publicació2021-05-15
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Abstract
We show that anisotropic planar anti-guiding waveguide structures with two radiation channels toward the surrounding cladding materials can support unidirectional guided resonances (UGRs), where radiation is canceled in one of the radiation channels and redirected into the other. Their formation is subtle as it requires breaking the so-called polar anisotropy-symmetry of the structures. Then, UGRs appear at specific wavelengths and light propagation directions, are robust, and are characterized by phase singularities in the channel in which radiation is canceled. The mechanism we describe allows for ready selection of the radiation direction, as well as tuning of the wavelength and the propagation angle at which UGRs occur.
CitacióMukherjee, S. [et al.]. Unidirectional guided resonances in anisotropic waveguides. "Optics letters", 15 Maig 2021, vol. 46, núm. 10, p. 2545-2548.
ISSN0146-9592
Versió de l'editorhttps://www.osapublishing.org/ol/abstract.cfm?uri=ol-46-10-2545
Altres identificadorshttps://arxiv.org/pdf/2105.08409.pdf
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UGR_Arxiv.pdf | 2,671Mb | Visualitza/Obre |