Trapped modes for periodic structures in
β
Julian Edward
π
Article
π
2003
π
John Wiley and Sons
π
English
β 94 KB
## Abstract The Laplace operator is considered for waveguides perturbed by a periodic structure consisting of __N__ congruent obstacles spanning the waveguide. Neumann boundary conditions are imposed on the periodic structure, and either Neumann or Dirichlet conditions on the guide walls. It is pro