[Katarzyna]

Hi Denis,

You might try cobra_p2p() or set ‘N’ along with the interconnects for routing automation. For example:

—

import nazca as nd
import nazca.demofab as demo

a1 = demo.deep.strt(10).put(0,0)
a2 = demo.deep.strt(10).put(300, 100, 180)
a3 = demo.deep.cobra_p2p(a1, a2, N=10).put()
demo.deep.euler_arc_euler(N=5).put(a3.pin[‘b4’])

nd.export_gds()

—

Katarzyna

• This reply was modified 4 months, 2 weeks ago by Katarzyna.

[Katarzyna]

The Nazca Cell would typically have predefined Pins and their exact (x,y,a) coordinates.
This tutorial may help: nazca-design.org/make_a_cell_put_a_cell/
For example:

import nazca as nd
import nazca.demofab as demo

with nd.Cell(name=’cellA’) as cellA:
demo.shallow.strt(10).put(0)
nd.Pin(name=’a1′).put(0, 0, 0)

cellA.put(‘a1’)

nd.export_gds()

If you wish to rotate the cell, you would simply put it at the angle; the pin coordinates inside the Cell remain:

cellA.put(‘a1′, 0, 0, 30)

You can rotate the pin inside the cell:

with nd.Cell(name=’cellA’) as cellA:
demo.shallow.strt(10).put(0)
nd.Pin(name=’a1′).put(0, 0, -30)

cellA.put(‘a1’)

To ‘force’ pin rotation as a parameter, you may use a function, example:

def cellA_func(cell_rotation=-30):
with nd.Cell(name=’cellA’) as cellA:
demo.shallow.strt(10).put(0)
pin1 = nd.Pin(name=’a1′).put(0, 0, cell_rotation)
return cellA

cellA_func(cell_rotation=-30).put(‘a1’)

[Katarzyna]

These are bend-straight waveguide offsets, a common feature in photonics:
pure.tue.nl/ws/files/4294122/590296.pdf

You can either create your own interconnect without offsets:
tutorial: nazca-design.org/xsections_and_layers/,

or set demo.shallow.offset = 0, for example:

import nazca as nd
import nazca.demofab as demo

demo.shallow.strt(100).put()
demo.shallow.bend().put()

demo.shallow.offset = 0
demo.shallow.strt(100).put(0, 100)
demo.shallow.bend().put()

nd.export_gds()

[Katarzyna]

The demofab_klayout_colors.lyp file can be downloaded here:
https://nazca-design.org/dist/demofab_klayout_colors.lyp

Simply drag and drop it into KLayout.

To add it permanently to your KLayout technologies, check-out:
nazca-design.org/manage-klayout-technologies/
and https://www.klayout.de/doc/about/technology_manager.html

Katarzyna

• This reply was modified 4 months, 2 weeks ago by Katarzyna.
• This reply was modified 4 months, 2 weeks ago by Katarzyna.

[Katarzyna]

Hi Rasel,

There is an example in ‘Nazca – Getting Started’ on how to create a layout of an 1×8 splitter.
Check out: https://nazca-design.org/manual/getting_started.html
and scroll down to ‘6. Creating a parameterized building block’.

Regards,
Katarzyna

[Katarzyna]

Hi Arhastran,

Nazca Design is not yet in the pip repositories. Nazca 2.0.2 is another package.
Thus “pip install nazca” installs a package unrelated to Nazca Design.

You’ll need the zip from the Nazca Design download site.
The current version is 0.5.13: https://nazca-design.org/dist/nazca-0.5.13.zip
After downloading, try: “pip install nazca-0.5.13.zip”

Regards,
Katarzyna

[Katarzyna]

Hi Jannis,

You can use the edge parameters to vary the waveguide width.
Here is an example:

import nazca as nd
import math as m

nd.strt(
    length=20,
    width=2,
    layer=1,
    edge1=lambda x: 1+x**10,
    edge2=lambda x: 1+m.sin(10*x)).put()

nd.export_gds()

Regards,
Katarzyna

[Katarzyna]

Dear YaohuiC,

The issue you describe is related to a KLayout setting.
To see the fill colors and stipples deselect: KLayout / View / Show Layers Without Fill.

Regards,
Katarzyna

 

[Katarzyna]

Dear Rastko,

You can convert an .eps file to a .gds using the Nazca image() function. The Nazca image() gives also flexibility in adapting: a size, a pixelsize and a threshold for a more desired outcome.
For now, all file formats supported by Pillow – Python Imaging Library can be converted to a .gds file.

Best regards,
Katarzyna

[Katarzyna]

Dear lorenzo_btbw,

You can change the layer number of an imported GDS by using a ‘layermap’ argument.
‘layermap’ maps the original layer to a new layer. Omitted layers will not be changed.

For example, you can change layer #1 from a loaded GDS to layer #10 using the following syntax:

import nazca as nd

nd.load_gds(
    ...
    layermap={1:10},
    ...)

Katarzyna

[Katarzyna]

Dear winniepic,

So far we support commercially PDKs from SMART Photonics and Fraunhofer HHI.
There is also a PDK in Nazca for the IMOS technology from TU Eindhoven.

We keep developing and testing other PDKs, incl. Lionix and imec fabs. As soon as the PDKs and related process-flow are finalized we will add them to the Market. For now we do not have a definite date for that.

Best regards,
Katarzyna

[Katarzyna]

Dear Isa,

You can export to SVG format using the following Nazca syntax:

import nazca as nd

nd.export_svg()

Katarzyna

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