Authors:	B. De Deckere, A. Van Londersele, D. De Zutter, D. Vande Ginste
Title:	Birefringent dispersive FDTD subgridding scheme
Format:	International Journal
Publication date:	7/2016
Journal/Conference/Book:	Electronics Letters
Volume(Issue):	52(17) p.1455-1457
DOI:	10.1049/el.2016.1709
Citations:	2 (Dimensions.ai - last update: 24/11/2024) 2 (OpenCitations - last update: 19/4/2024) Look up on Google Scholar
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Abstract

A novel 2D finite difference time domain (FDTD) subgridding method is proposed, only subject to the Courant limit of the coarse grid. By making μ or ε inside the subgrid dispersive, unconditional stability is induced at the cost of a sparse, implicit set of update equations. By only adding dispersion along preferential directions, it is possible to dramatically reduce the rank of the matrix equation that needs to be solved.