Reply To: Creating priority rule for overlapping layers in specific regions

[Xaveer]

Dear Marios,

This is best done with a combination of nazca and klayout. Here is an example nazca script:

import nazca as nd

nd.add_xsection("marios")
nd.add_layer2xsection(xsection="marios", layer=1)
nd.add_layer2xsection(xsection="marios", layer=2, growx=10)
nd.add_layer2xsection(xsection="marios", layer=3, growx=12)

marios = nd.interconnects.Interconnect(xs="marios", radius=100)

marios.strt(length=200, width=2).put(-100, 0, 0)
marios.bend(radius=100, angle=-45, width=1.5).put(0, -2.2, 0)
marios.bend(radius=100, angle=45, width=1.5).put(0, -2.2, 180)

nd.export_gds()

and the corresponding klayout script (save as “some_name.drc”):

# Run with: klayout -b -r some_name.drc
source("nazca_export.gds")
target("output.gds", "processed")

# Input waveguide layer (and "heal" tiny gaps)
wg = input(1).sized(1.nm).sized(-1.nm)
red = input(2)
blue = input(3)

# Subtract waveguide from red layer and output blue and new red layers
result = (red - wg)
result.output(12)
blue.output(13)

Run the latter script as argument to klayout from the command line:
“klayout -b -r some_name.drc” and your output will be in the output.gds file.

Xaveer