constants.m

一组很好的FDTD计算二维光子带隙的程序

function Constants

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Electromagnetic Finite-Difference Time-Domain %
% Version 1.20, Release 1                       %
%                                               %
%   (C) Copyright 2005                          %
%   Sharif University of Technology             %
%   School of Electrical Engineering            %
%   All Rights Reserved                         %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


global TE TM Air Silicon GaAs MaxSpeed
global False True

False=0;
True=1;

TE=0;           % H-polarization
TM=1;           % E-polarization

MaxSpeed=1;			% Numerical speed of light in vacuum

%%%% Permittivities of some materials

Air=1;
GaAs=10.6;
Silicon=11.9;