Learning Forum

[chizhang]

Hi, I found an example of simulating a surface-relief grating using RCWA in Zemax (https://support.zemax.com/hc/en-us/articles/1500005578722-Simulating-diffraction-efficiency-of-surface-relief-grating-using-the-RCWA-method).

However, instead of using RCWA, I want to design a grating in Lumerical with FDTD, then import the grating into Zemax and complete the rest of the simulation in the non-sequential mode. I wonder if there is a tutorial for that?

Thank you!

[Kyle]

There is some more information about importing results from FDTD into Zemax on this page: https://support.lumerical.com/hc/en-us/articles/360034936793-Zemax. These features are mainly for importing EM fields or raysets between FDTD and Zemax. At the moment, there aren't any features for importing grating results from FDTD into Zemax.

[chizhang]

Thank you! I am wondering if the raysets can be used with the grating simulated by Lumerical FDTD? Or the raysets generation only works for the OLED/LED simulation as shown in these tutorials?

[Kyle]

Sorry for the late reply. I believe it would be possible to export a rayset from an FDTD simulation of a grating, similar to the patterned OLED simulations. You wouldn't be able to simulate rays passing through the grating from a different source in the Zemax simulation, however.