Waveguide stopped light mediated by mode transitions
Tipus de documentComunicació de congrés
Data publicació2019
EditorOptical Society of American (OSA)
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Hyperbolic metamaterials (HMMs) are uniaxial materials that have hyperbolic dispersion curves. There are two types of hyperbolic metamaterials, type I that is described by a permittivity tensor with e|| < 0 and e¿ > 0, and type II that has e|| > 0 and e¿ < 0. Planar waveguides with hyperbolic materials have been mostly studied with propagation direction along the principal axis of the dielectric tensor only. Such studies showed that modes feature anomalous ordering in such a way that cut-off appears for lower order modes as light frequency increases. Interestingly, stopped light featuring null group velocity at specific wavelengths has been predicted for modes near cut-off in type II HMMs planar waveguides with optical axis (OA) oriented along the propagation direction [1]. Here, we theoretically study light propagation in type II HMMs planar waveguides for any orientation ¿ of the OA contained in a plane parallel to the waveguides interfaces. The results shows that a change in the wavelength only changes the OA direction ¿ at which stopped light exist. The process is a consequence of the lack of mode cut-off and it is caused by a mode spectroscopy transition from hyperbolic modes with anomalous order propagating along the OA (¿ = 0º), to modes with normal order, propagating orthogonally to the OA (¿ = 90º).
CitacióPujol, M. [et al.]. Waveguide stopped light mediated by mode transitions. A: Conference on Lasers & Electro-Optics / European Quantum Electronics Conference. "2019 CLEO/EQEC Conference on Lasers and Electro-Optics/ Europe and the European Quantum Electronics Conference". Washington: Optical Society of American (OSA), 2019, ISBN 978-1-7281-0469-0.
ISBN978-1-7281-0469-0
Versió de l'editorhttps://www.osapublishing.org/conference.cfm?meetingid=90&yr=2019
Col·leccions
- Departament de Física - Ponències/Comunicacions de congressos [669]
- Doctorat en Fotònica - Ponències/Comunicacions de congressos [8]
- Departament de Teoria del Senyal i Comunicacions - Ponències/Comunicacions de congressos [3.316]
- FOTONICA - Grup de Recerca de Fotònica - Ponències/Comunicacions de congressos [28]
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