Event Details
Bi-directional Mode Matching for Whispering Gallery Cavities
Presenter: Saeed Farajollahi
Supervisor:
Date: Mon, August 17, 2026
Time: 10:00:00 - 11:00:00
Place: Zoom - see below.
ABSTRACT
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Meeting ID: 811 8572 1418
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Meeting ID: 811 8572 1418
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Abstract: Despite rapid advances in computational capabilities and commercial full-wave electromagnetic simulators, three-dimensional numerical analysis of whispering gallery mode micro-resonators remains infeasible for WGM cavities with large diameters. This is especially important for the case of local scatterers near the ideal azimuthally symmetric micro-resonators, where the common 2D axisymmetric analysis fails to explain important scatterer-resonator interactions. Second-order methods such as perturbation and coupled-mode theory are often applied to model these interactions, where the 2D axisymmetric solutions of the bare cavity are used in a post-processing step. However, the dipole model of spherical scatterers, which is essential for these analyses, shows discrepancies with experimental results for larger scatterers. We present a full-wave bi-directional mode matching method that significantly reduces the computational cost of first-order 3D simulation of the perturbed WGM resonator.