A symmetric configuration with two straight access channels, strong coupling regime. Parameters: refractive indices 1.0 (background) and 1.5 (cores), bus waveguide width 0.6µm, gap distance 0.3 µm, cavity radius 7.5 µm (outer rim), cavity core width 0.75 µm.
2-D simulations for TE-polarization, the principal electric field component Ey is perpendicular to the x-z-plane of the computational window. The unidirectional HCMT model (hybrid analytical/numerical coupled mode theory) is based on the guided slab modes of the access channels, together with bend modes supported by the cavity core.
Transmittance T and dropped optical power D as functions of the vacuum wavelength λ of the exciting guided mode. The links at the positions indicated by the bold upper tick marks lead to animations of the time harmonic electric field, and of the field modulus.