26. Weltleitmesse und Kongress für Komponenten,
Systeme und Anwendungen der Photonik
27.–30. Juni 2023 | Messe München
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CORNERSTONE brings the future closer by turning your ideas into reality.


We are an open source, license free Silicon Photonics rapid prototyping foundry in the UK. Our prototyping platforms utilise industrially-compatible deep-UV projection lithography to enable seamless scaling-up of production volumes, whilst also retaining device level innovation capability using high-resolution e-beam lithography and versatility in our process flows. This process flexibility and open source model differentiates CORNERSTONE from other foundries.

We offer 3 different silicon-on-insulator platforms and a 300nm thick silicon nitride platform, as well as suspended-silicon and 3 µm thick germanium-on-silicon platforms. All available via multi-project-wafer runs or bespoke fabrication batches.

We pride ourselves on our ability to support researchers at all stages of their career.