title: Reduced scattering-matrix algorithm for high-density plasmonic structures.
abstract: We describe a method to compute S-matrix interface terms using a selection of eigenmodes. When solving the modal equation, the computation of left and right eigenvectors leads to rectangular eigenmodes matrices. Expressions of S-matrix interface terms are then expressed so as to allow for a significant reduction of the computation cost. The reduction is even further decreased in the case of the B-spline modal method, which deals with sparse matrices. Its convergence is illustrated on a high-density plasmonic structure and compared to a full modal method.
authors.affiliation: Laboratoire de Photonique et de Nanostructures (LPN-CNRS), Route de Nozay, 91460 Marcoussis, France.
authors.forename: Patrick
authors.initials: P
authors.lastname: Bouchon
authors.forename: Fabrice
authors.initials: F
authors.lastname: Pardo
authors.forename: Riad
authors.initials: R
authors.lastname: Haïdar
authors.forename: Grégory
authors.initials: G
authors.lastname: Vincent
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Pelouard