Analysis of whispering gallery modes resonators: wave propagation and energy balance models

E. Rivera-Pérez, A. Díez, J. L. Cruz, E. Silvestre, M. V. Andrés


Electromagnetic whispering gallery modes (WGM) are surface waves guided by the curvature of an interface. Microspheres, microdisks and microcylinders –as for example standard optical fibers– are high quality microresonators for the WGM. In fact, they can be regarded as compact and small ring resonators. Here, we present a comparison between wave propagation and energy balance models, stablishing the equivalence and discussing the basic characteristics of these two complementary approaches.


optical cavities; optical fibers; whispering gallery modes, optical resonators

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