How to realize the change of refractive index with space and time in plugin material


#1

Continuing the discussion from How to realize the change of refractive index with space and time in plugin material:Who could give a solution for me about the spatial variation in base material


#2

Hi @phd.wangbo,

I briefly mentioned how to do this in our previous discussion, but we can go into more details under this thread. This is what I wrote:

“Regarding the spatial variation of the index, you can use the Import object - Spatial (n,k) data method for the base material. You just need to create a text file (with the appropriate formatting, described in the link above) that contains the material index evaluated at different points in the structure.”

Please take a look at the KB page and let me know if you have any questions.


#3

I’m trying to do something similar to this. However, I have a question, what is the difference between writing epsilon as two function each of which depends on single parameter (i.e. position and time) and writing it as a one whole function containing two parameters? How can lumerical deal with each of the two cases?

Waiting for your reply.