CORNERSTONE PDK 1.4.3

CORNERSTONE Photonics PDK.

Supported Process Variants

Module	Process	Waveguide	Wavelength	Heaters
cspdk.si220.cband	SOI 220nm	Strip + Rib	C-band (1550nm)	Yes
cspdk.si220.oband	SOI 220nm	Strip + Rib	O-band (1310nm)	Yes
cspdk.si340	SOI 340nm	Strip + Rib	C-band / O-band	Yes
cspdk.si500	SOI 500nm	Rib	C-band / O-band	Yes
cspdk.sin300	SiN 300nm	Strip	C-band / O-band	Yes
cspdk.sin200	SiN 200nm	Strip	Visible (520/638/780nm)	Yes
cspdk.ge_on_si	Ge-on-Si	Rib	Mid-IR (3800nm)	No
cspdk.si_sus	Suspended Si	Suspended	Mid-IR (3800nm)	No

Installation

We recommend uv

# On macOS and Linux.
curl -LsSf https://astral.sh/uv/install.sh | sh

# On Windows.
powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"

Installation for users

Use python 3.11, 3.12 or 3.13. We recommend VSCode as an IDE.

uv pip install cspdk --upgrade

Then you need to restart Klayout to make sure the new technology installed appears.

Installation for contributors

Then you can install with:

git clone https://github.com/gdsfactory/cspdk.git
cd cspdk
uv venv --python 3.12
uv sync --extra docs --extra dev

Documentation

• gdsfactory docs

Pre-commit

make pre-commit

Release

1. Bump the version:

tbump 0.0.1

This triggers the release workflow that builds wheels and uploads them.

2. Create a pull request with the updated changelog since last release.