Angular control of anisotropy-induced bound states in the continuum
Radiation of leaky modes existing in anisotropic waveguides can be cancelled by destructive interference at special propagation directions relative to the optical axis orientation, resulting in fully bound states surrounded by radiative modes. Here we study the variation of the loci of such special...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/180892 |
| Acceso en línea: | https://hdl.handle.net/2117/180892 https://dx.doi.org/10.1364/OL.44.005362 |
| Access Level: | acceso abierto |
| Palabra clave: | Anisotropy Optical wave guides Optoelectronic devices Nanostructured materials Anisotropia Nanoestructures -- Propietats òptiques Àrees temàtiques de la UPC::Física |
| Sumario: | Radiation of leaky modes existing in anisotropic waveguides can be cancelled by destructive interference at special propagation directions relative to the optical axis orientation, resulting in fully bound states surrounded by radiative modes. Here we study the variation of the loci of such special directions in terms of the waveguide constitutive parameters. We show that the angular loci of the bound states is sensitive to several design parameters, allowing bound states to exist for a broad range of angular directions and wavelengths and suggesting applications in filtering and sensing. |
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