To. Korner et W. Fichtner, GRID INTERPOLATION AT MATERIAL BOUNDARIES IN FINITE-DIFFERENCE TIME-DOMAIN METHODS, Microwave and optical technology letters (Print), 19(5), 1998, pp. 368-370
A method for refractive: index adaptive gridding in finite-difference
time-domain methods is presented. This method allows highly efficient
simulation of structures consisting homogeneous regions with large dif
ferences in refractive index and planar interfaces which are frequentl
y encountered when modeling photodetectors, sensors, etc., on which li
ght impinges from vacuum. (C) 1998 John Wiley & Sons, Inc.