Angular Control of Anisotropy-Induced Bound States in the Continuum

Abstract

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.

arXiv comment4 figures

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Cited by in corpus (8)

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• Unidirectional guided resonances in anisotropic waveguides
• Dirac Points Embedded in the Continuum
• Anisotropy-induced Extrinsic Chirality and Chiral Discrimination of Surface Plasmon Polaritons
• Solitary Spectrally-Discrete Bound States in the Continuum in an Open System
• Surface Bound States in the Continuum in Dyakonov Structures