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Updated: Aug 24, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Transmission and radiation in a slab waveguide coupled to a whispering-gallery resonator: volume-integral-equation
Ioannis D Chremmos1, Nikolaos K Uzunoglu
1Microwave and Fiber Optics Laboratory, Department of Electrical and Computer Engineering, National Technical University of Athens, Iroon Polytechniou 9, Zografos 15773, Athens, Greece.
Abstract:
The excitation of a whispering gallery resonator by a surface wave guided in a dielectric slab is analyzed with a rigorous volume-integral-equation approach. The analysis is based on the Green's function concept and the application of the entire-domain Galerkin technique through expansion of the electric field in the resonator in terms of cylindrical wave functions. The algorithm developed yields highly accurate results for the transmission and reflection coefficients in the waveguide. The radiated far field is computed, and the effect of the excitation of a whispering gallery mode on the radiation pattern is studied.
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