Hi, thanks for posting this package online. I wonder that if you can tell me what references used for the formulation in 'svmode'. I am using the book 'Introduction to Optical Waveguide Analysis:Solving Maxwell's Equations and the Schrodinger Equation' by Kenji Kawano. It seems the equations used here for aw, ae, an and as are partially different from that in the book.

Hi,
I am new to waveguide and I want to plot the mode profiles of slab waveguide as shown in this figure http://wwwhome.math.utwente.nl/~hammer/Metric/Fig/tefEy00L.gif.
Can some one please help me in this manner. I have made a code but it was not working. Code is given below. Thanks in advance
n1c=1.77;
n2s=1.45;
n3cd=1.0;
d=2.0*10^-6;
lambda=1.00*10^-6;
c=3*10^8;
f=c/lambda;
omega=2*pi*f;
k0=omega/c;
neff=n2s:0.00001:n1c;
beta=k0.*neff;
r=sqrt((beta.^2)-(k0^2*n3cd^2));
q=sqrt(((k0^2)*n1c^2)-(beta.^2));
p=sqrt((beta.^2)-(k0^2*n2s^2));
x=-5*10^-6:2.0*10^-6:4*d;
Ey=zeros(length(x),length(r));
for i=1:length(x)
if (x(i)<0)
Ey(i,:)=exp(r*x(i));
% Ef1=Ey;
elseif (0<=x(i) )&& (x(i)<=2*d)
Ey(i,:)=cos(q*x(i))+sin(q*x(i));
% Ef2=Ey;
else
Ey(i,:)=(cos(2*d*q)+sin(2*d*q)).*exp(-p*(x(i)-(2*d)));
% Ef3=Ey;
end
end
% Ef=[Ef1 Ef2 Ef3];
mesh (abs(Ey));

That's great! But I am wondering how to calculate the effective refractive indices of the regions in and out (A and B) of the waveguide, as shown in this picture http://tinypic.com/r/25iorpi/4

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