Corrections to "Slanted-Wall Beam Propagation"

Recently, a new algorithm for wide-angle beam propagation was reported that allowed grid points to move in an arbitrary fashion between propagation planes and was thus capable of modeling waveguides whose widths or centerlines varied with propagation distance. That algorithm was accurate and stable...

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Bibliographic Details
Published in:Journal of lightwave technology 2009-09, Vol.27 (17), p.3959-3960
Main Author: Hadley, G.R.
Format: Article
Language:English
Subjects:
Beam propagation
diffractive optics
Equations
Finite difference methods
finite-difference method
Optical diffraction
Optical polarization
Optical propagation
Optical waveguides
Planar waveguides
Solid modeling
Tellurium
Waveguide transitions
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Summary:Recently, a new algorithm for wide-angle beam propagation was reported that allowed grid points to move in an arbitrary fashion between propagation planes and was thus capable of modeling waveguides whose widths or centerlines varied with propagation distance. That algorithm was accurate and stable for TE polarization but unstable for wide-angle TM propagation. This deficiency has been found to result from an omission in one of the wide-angle terms in the derivation of the finite-difference equation and is remedied here, resulting in a complete algorithm accurate for both polarizations.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2009.2020606