A time domain vector finite element method for the full wave simulation of nonlinear photonic devices.

摘要

We have developed a mixed Vector Finite Element Method (VFEM) for Maxwell's equations with third order polarization terms. The method allows for discretization of complicated device geometries with arbitrary order representations of the B and E fields, and up to 4th order accurate time discretization. Additionally we have implemented a series of computational optimizations that significantly increase the scale of simulations that can be performed with this method. Among these optimizations is a new generalized mass lumping method that we developed which reduces the computational cost of the finite element system solve by a factor of 10x.; In this dissertation we will present the Vector Finite Element Method, and the computational optimizations that we employed. Additionally, we will present a series of analyses and simulations that were performed to validate the method. Finally, we will present some production runs using this method, including nonlinear mode mixing in waveguides and supercontinuum generation in a photonic crystal fiber.