Guiding light through quasi-TE modes embedded in the radiation continuum

2024/12/12 by Petracek, Jiri, Kuzmiak, Vladimir, Ctyroky, Jiri +1
#35Q61 #FOS: Physical sciences #Optics (physics.optics)

paper · doi:10.48550/arxiv.2412.09392

Abstract

We introduce a new type of a bound state in the continuum (BIC) which appears in the photonic structure consisting of two coupled waveguides where one of them supports a discrete eigenmode spectrum embedded in the continuum of the other one. A BIC appears when the coupling is suppressed by suitable tuning of structural parameters. In contrast to the previously described configurations, our scheme facilitates genuine guiding of quasi-TE modes in the core with the lower refractive index.

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