Title :
A single scatter improvement for beam propagation methods
Author :
Lu, Ya Yan ; Ho, Pui Lin
Author_Institution :
Dept. of Math., City Univ. of Hong Kong, Kowloon, China
Abstract :
The beam propagation methods are widely used in numerical simulations of optical waveguides that change gradually in the propagation direction. However, their accuracy is still limited if the one-way models are used over a large propagation distance. The single scatter approximation can be used to improve the accuracy of the beam propagation method, but its usual discrete form is not convenient for numerical implementation. We obtain an improved one-way equation as the continuous limit of the discrete single scatter approximation. Alternative discretization of this equation leads to efficient numerical implementations with the same improved accuracy.
Keywords :
Helmholtz equations; light propagation; light scattering; optical planar waveguides; optical waveguide theory; accuracy; beam propagation methods; discrete single scatter approximation; discretization; large propagation distance; numerical simulations; one-way models; optical waveguides; planar waveguides; propagation direction; single scatter improvement; Equations; Numerical simulation; Optical propagation; Optical scattering; Optical waveguides; Planar waveguides; Polarization; Propagation constant; Tellurium; Waveguide transitions;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1021983
