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arXiv · 1407.4973

Inter-mode reactive coupling induced by waveguide-resonator interaction

Mher Ghulinyan·Fernando Ramiro Manzano·Nikola Prtljaga·Martino Bernard·Lorenzo Pavesi·Georg Pucker·Iacopo Carusotto
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Abstract

We report on a joint theoretical and experimental study of an integrated photonic device consisting of a single mode waveguide vertically coupled to a disk-shaped microresonator. Starting from the general theory of open systems, we show how the presence of a neighboring waveguide induces reactive inter-mode coupling in the resonator, analogous to an off-diagonal Lamb shift from atomic physics. Observable consequences of this coupling manifest as peculiar Fano lineshapes in the waveguide transmission spectra. The theoretical predictions are validated by full vectorial 3D finite element numerical simulations and are confirmed by the experiments.

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Mher Ghulinyan, Fernando Ramiro Manzano, Nikola Prtljaga, Martino Bernard, Lorenzo Pavesi, Georg Pucker, Iacopo Carusotto. 2014-07-18. Inter-mode reactive coupling induced by waveguide-resonator interaction. https://doi.org/10.1103/physreva.90.053811

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