DocumentCode
1284064
Title
A wide-angle finite-element beam propagation method
Author
Koshiba, Masanori ; Tsuji, Yasuhide
Author_Institution
Div. of Electron. & Inf. Eng., Hokkaido Univ., Sapporo, Japan
Volume
8
Issue
9
fYear
1996
Firstpage
1208
Lastpage
1210
Abstract
A wide-angle finite-element beam propagation method based on the Pade approximation is developed. Considerable improvement in accuracy over the paraxial approximation is achieved with virtually no additional computation. In the present algorithm, the quadratic element, transparent boundary condition, adaptive reference index, and adaptive grid are effectively utilized.
Keywords
approximation theory; boundary-value problems; finite element analysis; optical planar waveguides; optical waveguide theory; refractive index; Pade approximation; adaptive grid; adaptive reference index; algorithm; optical planar waveguides; optical waveguide theory; paraxial approximation; quadratic element; transparent boundary condition; wide-angle finite-element beam propagation method; Boundary conditions; Equations; Finite element methods; Optical planar waveguides; Optical propagation; Optical refraction; Optical variables control; Optical waveguides; Planar waveguides; Transmission line matrix methods;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/68.531838
Filename
531838
Link To Document