Support adding surfaces to ports at edges of a simulation

[nikosavola]

This would be useful for full-wave simulations with Palace

[simbilod]

This would be useful generally. I have some work on a branch, but it is very difficult to make generalizable to arbitrary 2D and 1D entities.

Is there a quick workaround that would work help? Say, just allowing 2D planes like this in very specific configurations?

[nikosavola]

This would be useful generally. I have some work on a branch, but it is very difficult to make generalizable to arbitrary 2D and 1D entities.

Is there a quick workaround that would work help? Say, just allowing 2D planes like this in very specific configurations?

These would exist exclusively at the ends of waveguides on the simulation boundary. I guess that maybe allows for a hack?

[simbilod]

Closing for now as the strategy to do this is outlined in the docs, and has been implemented in gdsfactory. Feel free to reopen if more functionality is needed