The University of Southampton's CORNERSTONE silicon photonics platform, a 220nm SOI multi-project-wafer process built for accessible, low-cost prototyping.
CORNERSTONE Photonics PDK.
| 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 |
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"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.
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 devPre-commit hooks are centrally maintained in pdk-ci-workflow-public. make dev fetches the canonical config and installs the git hook.
make devRun the test suite:
make test- Bump the version:
tbump 0.0.1This triggers the release workflow that builds wheels and uploads them.
- Create a pull request with the updated changelog since last release.