Title :
Corrections to “Slanted-Wall Beam Propagation”
Author :
Hadley, Ronald G.
Author_Institution :
Photonics, LLC, Albuquerque, NM, USA
Abstract :
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.
Keywords :
finite difference methods; light polarisation; light propagation; optical waveguides; TE polarization; finite-difference equation; slanted-wall beam propagation; waveguides; wide-angle beam propagation; Beam propagation; diffractive optics; finite-difference method;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2020606