graemebargen
Subscriber

I found this footnote on the page https://support.lumerical.com/hc/en-us/articles/1500007228522-GDS-pattern-extraction-for-inverse-designed-devices-using-contours-method relating to the contour extraction method.
It appears that this method is not suitable to straight shapes like waveguides.
I have had similar problems extracting a fully etched grating coupler geometry where I am still seeking help as I posted in another forum entry here https://forum.ansys.com/index.php?p=/discussion/27253/help-with-exporting-to-gds-lumerical-grating-coupler-example#latest
It seems that exporting to GDS either based on the contour method or based on geometric object height are both insufficient for the instance of a filly etched grating coupler based on the Lumerical example files for the 3D inverse grating coupler design.
Can you think of any other way of extracting the proper geometry to a GDS file with no error?
Thanks again