Abstract
AbstractA simple procedure for the generation of accurate polychromatic sources in waveguides taking into account mode dispersion is presented. It allows for an efficient use of time‐domain solvers in the analysis of guided modes, and can be used whether the mode dispersion and field distribution are known analytically or numerically. This method is implemented in the Diogenes discontinuous Galerkin time‐domain (DGTD) solver (http://diogenes.inria.fr), and is validated on a waveguide mode converter.
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