# Publications

 Titre : Exact boundary conditions for periodic waveguides containing a local perturbation Année : 2006 Type : article_acl Auteurs : P. Joly, J.-R. Li, S. Fliss Résumé : We consider the solution of the Helmholtz equation $-\Delta u({\bf x}) - n({\bf x})^2\omega^2 u({\bf x}) = f({\bf x})$, ${\bf x}=(x,y)$, in a domain $\Omega$ which is infinite in $x$ and bounded in $y$. We assume that $f({\bf x})$ is supported in \$\Omega^0:={{\bf x}\in {\Omega} \; | a^- Thèmes : Frontières artificielles Guides d'ondes Référence : Communications in Computational Physics - vol. 1(6) (pp 945-973 )