how to repeat the optimization of the vertical coupler in this article？

[wllshr123]

How should I reproduce this article correctly?
“Multi-layer inverse design of vertical grating couplers for high-density, commercial foundry interconnects”
I want to repeat the optimization of the vertical coupler in the article, but since I am a new user of meep, I would like to ask you to introduce the optimization steps to me, or would you like to give me a complete code so that I can try to run it?

[smartalecH]

Glad you enjoyed our paper.

You can find several adjoint optimization tutorials in the form of interactive notebooks here: https://github.com/NanoComp/meep/tree/master/python/examples/adjoint_optimization

Unfortunately, we don't have a tutorial with the exact code used to produce the results of that paper. Those designs were fabricated on a commercial foundry platform, and as such contain sensitive proprietary details.

That being said, we've been planning to do a series of grating coupler tutorials (for both 2D and 3D designs).

(If anyone else is interested in writing a tutorial, that would also be great!)

[wllshr123]

Thank you for your reply.In addition to the content in this link, do you have any other tutorials with adjoint optimization? (preferably 3D)

[smartalecH]

You can also take a look at the following repo:

https://github.com/NanoComp/photonics-opt-testbed

These, along with the tutorials we mentioned earlier are all the public examples we have (for now).