Wide-angle finite-element beam propagation methodusing Padé approximation
- 14 August 1997
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 33 (17) , 1461-1462
- https://doi.org/10.1049/el:19970958
Abstract
A wide-angle beam propagation method using a finite-element scheme is presented. The method is based on Padé approximations expressed with polynomial matrix functions. Tilted-waveguide propagation characteristics are calculated, and an analysis for a steeper waveguide is shown to be allowed when proposed higher-order Padé approximations are used.Keywords
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