Learning Forum

[sagar]

In  FDTD, we can measure absorption by integrating power in a particular region instead of doing 1- R - T. Are there any options in RCWA to measure absorption in a particular layer when we have multiple layers and more than one layer can absorb light? 

[Guilin Sun]

 

RCWA now allows users to use field monitors so you can get E fields:

https://optics.ansys.com/hc/en-us/articles/16277147107731-RCWA-Field-Monitor-Simulation-Object

RCWA can report refractive index.

So you will need to use script to calculate the absorption.

 

I think this can be a feature for RCWA. Please file it here https://ix.lumerical.com/

 

 

 

[sagar]

Can you provide the code so I can calculate the absorption in the particular absorbing layer? 

[Guilin Sun]

You will need to use the script in FDTD "advanced power"

or detector simulation: https://optics.ansys.com/hc/en-us/articles/360042331634-10-V-Ge-on-Si-APD-with-Si-multiplication

One of the example files is FDTD simulation, so please refer to its analysis group: