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arXiv · 1607.01213

Waveguide photonic limiters based on topologically protected resonant modes

U. Kuhl·F. Mortessagne·E. Makri·I. Vitebskiy·T. Kottos
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Abstract

We propose a concept of chiral photonic limiters utilising topologically protected localised midgap defect states in a photonic waveguide. The chiral symmetry alleviates the effects of structural imperfections and guaranties a high level of resonant transmission for low intensity radiation. At high intensity, the light-induced absorption can suppress the localised modes, along with the resonant transmission. In this case the entire photonic structure becomes highly reflective within a broad frequency range, thus increasing dramatically the damage threshold of the limiter. Here we demonstrate experimentally the principle of operation of such photonic structures using a waveguide consisting of coupled dielectric microwave resonators.

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U. Kuhl, F. Mortessagne, E. Makri, I. Vitebskiy, T. Kottos. 2016-07-05. Waveguide photonic limiters based on topologically protected resonant modes. https://doi.org/10.1103/physrevb.95.121409

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