Title :
A propagator-&thetas; beam propagation method
Author :
Chui, Siu Lit ; Lu, Ya Yan
Author_Institution :
Dept. of Math., City Univ. of Hong Kong, China
fDate :
3/1/2004 12:00:00 AM
Abstract :
A new wide-angle beam propagation method is developed for better modeling of both propagating and evanescent modes. It brings in a parameter θ to connect the [(p-1)/p] and [p/p] Pade´ approximants of the one-way propagator. The parameter can be used to adjust the requirements of approximating the propagating modes and suppressing the evanescent modes. Numerical results indicate that a suitable choice of θ leads to improved accuracy of the solution.
Keywords :
light propagation; optical waveguide theory; Pade approximants; evanescent modes; one-way propagator; propagating modes; propagator-&thetas; beam propagation method; wide-angle beam propagation method; Eigenvalues and eigenfunctions; Equations; Finite difference methods; Perfectly matched layers; Reflection; Refractive index; Ribs; Transmission line matrix methods;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.823764
