Learning Forum

[m.hoormann]

Hello,

I am trying to create a polygon with tilted sidewalls in python. I have adapted the script that is given as an example in the artical: Tips for adding sidewall angles to simulation objects – Ansys Optics

My python code does look like this:

    name = "Angled WG"

    vertices_1 = np.array([[Epi["Total t"], -Data["Angled WG"]["w"]/2],  

                         [Epi["Total t"] + Data["Angled WG"]["t"], -Data["Angled WG"]["w"]/2],

                         [Epi["Total t"] + Data["Angled WG"]["t"], Data["Angled WG"]["w"]/2],

                         [Epi["Total t"], Data["Angled WG"]["w"]/2]

                         ])

   

    mode.addpoly()

    mode.set("vertices", vertices_1)

    vertices = mode.get("vertices")

    # print(vertices)

    mode.addlayerbuilder()

    mode.set("name", "WG")

    mode.set("geometry", {"1:0": vertices})

    mode.set("gds sidewall angle position reference", "Bottom")

    n_GaN = [n_e_GaN, n_o_GaN, n_o_GaN]

    material = name

    if mode.getmaterial(name) == str("The material, " + name + ", is not available."):

        mode.setmaterial(mode.addmaterial("(n,k) Material"), "name", material)

        mode.setmaterial(material, "Anisotropy", 1)                                             # Diagonal Anisotropy

        mode.setmaterial(

            material, {"Refractive Index": np.array(n_GaN), "Imaginary Refractive Index": 0}

        )        

    mode.addlayer("WG Layer")

    mode.setlayer("WG Layer", "layer number", "1:0")

    mode.setlayer("WG Layer", "thickness", Data["Angled WG"]["t"])

    mode.setlayer("WG Layer", "pattern material", material)

    mode.setlayer("WG Layer", "sidewall angle", Data["Angled WG"]["angle"])

The code runs, however, the polygon with the sidewalls is not created via the layer builder

 

Could you help me with fixing this issue?

Kind regards,

Matthias Hoormann

[Kirill]

Hello Matthias,

It seems you are not able to complete the layer setting with

mode.set("geometry", {"1:0": vertices})

Try to use

mode.set("geometry", {"1:0": [vertices]})

instead and see if it helps.

Also, since you're calculating the vertices yourself, you can pass them directly to the LayerBuilder without the need to create an extruded polygon.

Best regards,
Kirill