Mie scattering analysis of spherical Bragg "onion" resonators

Abstract

Combining the Mie scattering theory and a transfer matrix method, we investigate in detail the scattering of light by spherical Bragg "onion" resonators. We classify the resonator modes into two classes, the core modes that are confined by Bragg reflection, and the cladding modes that are confined by total internal reflection. We demonstrate that these two types of modes lead to significantly different scattering behaviors.