Coupled modes in parallel pillar microcavities: theory

摘要

The photonic modes of to identical, parallel microcavities are studied as a function of various parameters controlling the strength of the interaction between the isolated cavities. Coupling between the modes, which is determined by the overlap between the decaying e.m. field produced by one cavity in the region occupied by the second one, removes the degeneracy between the fundamental modes of the isolated structures. The energy splitting is found to depend strongly on the radius of the cavities, their distance, and the refractive index contract between the core and the external medium.