Ringresonator, 2D, schematically
Circular microring-resonator,
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.

Transmission properties
Unidirectional HCMT model (hybrid analytical/numerical coupled mode theory), 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.

1.52747 µm 1.54428 µm 1.56053 µm 1.56247 µm 1.56446 µm 1.58005 µm 1.59838 µm

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.