How to generate gds from irregular devices

[zrzyyds]

Hello, I am a beginner. I'm trying to run a program for the inverse design of a taper. The generated device profile is non-linear, but the device performs well.

Excuse me, how can I convert the device picture into a gds file. Because I want to build it and test its performance. I am currently using klayout. I need to write a program or is there any other software that can achieve it, thank you!

[lucas-flexcompute]

@zrzyyds Are you using this example as a starting point? Or are you using a pixelated medium?

If it's the first case, you can use the optimized parameters to create a gds polygon the same way it's done in make_taper using the gdstk module:

import gdstk

def export_gdsii(ys, layer=0, datatype=0, filename = "taper.gds"):
    """Export a gdsii file with the taper based on the supplied y values."""

    # Not using Jax here, so it's fine to simply concatenate the vertices
    vertices = list(zip(xs, ys)) + list(zip(xs, -ys))[::-1]

    # Create a polygon from the vertices
    taper = gdstk.Polygon(vertices, layer=layer, datatype=datatype)

    # Create a gdsii library with a cell for the taper
    lib = gdstk.Library("Taper")
    cell = lib.new_cell("TAPER")

    # Add the taper ti the cell
    cell.add(taper)

    # Write the library to a gds file
    lib.write_gds(filename)

...

export_gdsii(params_best)