Title :
Adaptive multilevel beam propagation method
Author :
Schmidt, F. ; Nolting, H.-P.
Author_Institution :
Konrad-Zuse-Zentrum fuer Informationstech. Berlin, Germany
Abstract :
A beam propagation method (BPM) with an adaptive discretization of a 1D cross section and a longitudinal step-size control is presented. In contrast to most approaches to a BPM that use an a priori fixed grid for the numerical discretization of the transversal optical field, the algorithm presented generates a space grid during the simulation depending on the geometry of the structure and on the actual computed field solution. In general, such an adaptively generated grid is highly nonuniform. An automatic stepsize control is introduced to complete the adaptive concept.<>
Keywords :
optical waveguide theory; physics computing; 1D cross section; adaptive discretization; adaptive multilevel beam propagation method; adaptively generated grid; automatic stepsize control; computed field solution; highly nonuniform; longitudinal step-size control; space grid; transversal optical field; Adaptive control; Computational geometry; Computational modeling; Geometrical optics; Grid computing; Mesh generation; Optical computing; Optical propagation; Programmable control; Solid modeling;
Journal_Title :
Photonics Technology Letters, IEEE
