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Updated: Jul 10, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Controlled coupling of counterpropagating whispering-gallery modes by a single Rayleigh scatterer: a classical
A Mazzei1, S Götzinger, L de S Menezes
1Nano-Optics, Humboldt University, Hausvogteiplatz 5-7, D-10117 Berlin, Germany.
Abstract:
We present experiments where a single subwavelength scatterer is used to examine and control the backscattering induced coupling between counterpropagating high-Q modes of a microsphere resonator. Our measurements reveal the standing wave character of the resulting symmetric and antisymmetric eigenmodes, their unbalanced intensity distributions, and the coherent nature of their coupling. We discuss our findings and the underlying classical physics in the framework common to quantum optics and provide a particularly intuitive explanation of the central processes.
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