CORNERSTONE is a license free, open source Silicon Photonics rapid prototyping foundry based in the UK. The prototyping platform utilises industrially-compatible deep-UV projection lithography to enable seamless scaling-up to production volumes via your favourite commercial foundry, but also retains device level innovation capability and flexibility in its process flows, making it ideal for researchers to try innovative designs, or to evaluate new photonic circuits. This process flexibility and license free, open access model is what differentiates CORNERSTONE from other foundries.

Currently CORNERSTONE offers 3 different silicon-on-insulator platforms via a multi-project-wafer service. However, in light of market demand for platforms that support additional wavelengths beyond traditional telecoms, CORNERSTONE is delighted to announce 3 exciting new silicon based technology platforms and 2 new integration platforms, all available from the summer of 2021. Find out more.

In addition, CORNERSTONE offers a DUV lithography service, which is currently free-of-charge for UK academics. 

The capabilities of the Silicon Photonics Group at the University of Southampton can be downloaded below.