Oscillatory Vertical Coupling between a Whispering-Gallery Resonator and a BusWaveguide

Ghulinyan, Mher; Ramiro Manzano, F.; Prtljaga, N.; Guider, R.; Carusotto, I.; Pitanti, A.; Pucker, Georg; Pavesi, L.

doi:10.1103/PhysRevLett.110.163901

We report on a theoretical and experimental study of the optical coupling between a whispering-gallery type resonator and a waveguide lying on different planes. In contrast to the usual in-plane geometry, the present vertical one is characterized by an oscillatory behavior of the effective coupling as a function of the vertical gap. This behavior manifests itself as oscillations in both the resonance peak waveguide transmission and the mode quality factor. An analytical description based on coupled-mode theory and a two-port beam-splitter model of the waveguide-resonator vertical coupling is developed for arbitrary phase-matching conditions and is successfully used to interpret the experimental observations.

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Titolo:	Oscillatory Vertical Coupling between a Whispering-Gallery Resonator and a BusWaveguide
Autori:	Ghulinyan, Mher F. Ramiro Manzano N. Prtljaga R. Guider I. Carusotto A. Pitanti Pucker, Georg L. Pavesi mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2013
Rivista:	PHYSICAL REVIEW LETTERS
Abstract:	We report on a theoretical and experimental study of the optical coupling between a whispering-gallery type resonator and a waveguide lying on different planes. In contrast to the usual in-plane geometry, the present vertical one is characterized by an oscillatory behavior of the effective coupling as a function of the vertical gap. This behavior manifests itself as oscillations in both the resonance peak waveguide transmission and the mode quality factor. An analytical description based on coupled-mode theory and a two-port beam-splitter model of the waveguide-resonator vertical coupling is developed for arbitrary phase-matching conditions and is successfully used to interpret the experimental observations.
Handle:	http://hdl.handle.net/11582/164810
Appare nelle tipologie:	1.1 Articolo in rivista

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