addimportnk - Script command

Adds a nk import object to the FEEM simulation environment where the profile of the material with a spatially varying index can be imported from an external Matlab file.

Once the nk import object is created, the data can be imported from a matlab (.mat) file using the GUI or by assigning a dataset to the object using the importdataset script command. The dataset can be in rectilinear or unstructured (finite-element) format.

Example

The following script command will add an import (n,k) object to the FEEM solver region and will load an analytic 3D heat data into it.

addfeemsolver;
addimportnk;
# create coordinate vectors and 3D matrix for nk input
x = linspace(0,1e-6,11);
y = linspace(-1e-6,1e-6,2);
z = linspace(0,2e-6,101);
nk = matrix(11,2,101)+3.45; # assume the index input is 3.45 everywhere
for (i=1:length(x)){  
# assume that index varies along x-axis 
nk(i,:,:)=x(i)*1e5;}
# add waveguide
addrect;
setname('WG');
set('x min',-1e-6); 
set('x max',1e-6);
set('y span',2e-6); 
set('y',0);
set('z span',2e-6); 
set('z',1e-6);
# create dataset
nkmaterial = rectilineardataset("nk import",x,y,z);
nkmaterial.addparameter("lambda",1.55e-6); # (Required) add any parameter
nkmaterial.addattribute("nk",nk);
# load data into nk import
select("FEEM::nk import");
importdataset(nkmaterial);
set("volume type","solid");
set("volume solid","WG");
set("selected attribute","nk");

See Also

List of commands , addfeemsolver , rectilineardataset , select , importdataset