Reduced scattering-matrix algorithm for high-density plasmonic structures |
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Authors: | Bouchon Patrick Pardo Fabrice Ha?dar Riad Vincent Grégory Pelouard Jean-Luc |
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Affiliation: | Laboratoire de Photonique et de Nanostructures (LPN-CNRS), Route de Nozay, 91460 Marcoussis, France. |
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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. |
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