Multiphysics Modeling of Electro-Optic Devices
Designers of electro-optic modulators and related devices often use separate tools to study the optical and electrical portions of the device. The flexibility of COMSOL Multiphysics makes it possible to construct unified models of EO phenomena including realistic waveguide profiles and anisotropic material properties.
We demonstrate the use of the RF Module to compute both RF and optical waveguide modes and calculate the velocity mismatch and overlap efficiency between them. Realistic index profiles for diffused waveguides are computed using the Transport of Diluted Species physics mode with anisotropic diffusion coefficients.