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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › Difference in accuracy between RCWA and FDTD › Reply To: Difference in accuracy between RCWA and FDTD

October 7, 2023 at 12:06 pm
handon
Subscriber

Thanks for your kind reply.

 

First, I set a result from PVlighthouse's calculator (OPAL2) as a reference. And the trend is similar between the reference and my FDTD results.

So I can be confident with my FDTD results.

The problem is the RCWA results. It's quite different from the reference and FDTD results.

I found the index results and material fitting are okay.

Why do the current RCWA results differ from FDTD?

Also, I checked the link so that you can download my files.

RCWA: https://drive.google.com/file/d/1Y6KB5FzyHkrw02NlFsnB8AUykna4fW3q/view?usp=sharing

FDTD: https://drive.google.com/file/d/17Z0xKsg4beiLttKTG4WpC0HpMSM9u95Q/view?usp=sharing

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