OpenLight Raises $34M Series A
SANTA CLARA, Calif., Aug. 26, 2025 — OpenLight, a custom photonic applications-specific integrated circuit (PASIC) chip designer, has closed a $34 million series A funding round. The round completes OpenLight’s transition from a Synopsys subsidiary to a high-velocity, venture backed company, OpenLight said.
OpenLight's Process Design Kit (PDK), based on the heterogeneous integration of indium phosphide (InP) and silicon photonics, gives customers access to a library of passive and active components covering integrated lasers, modulators, amplifiers and detectors. This PDK has been validated at Tower Semiconductor, ensuring designs are production-ready from day one. The PDK enables customers to create custom PASICs using proven building blocks, simplifying advanced chip development and accelerating time-to-market.
With the capital injection, OpenLight will expand its PDK library of active and passive photonics components, including its leading-edge 400Gb/s modulator and InP heterogeneously integrated on-chip laser technology. OpenLight will also ramp up its standard-based reference PICs at 1.6Tb/s and 3.2Tb/s. In addition, the company will scale its team to support customers as they transition to volume production over the next year.
OpenLight holds more than 360 patents covering its PDK and the manufacturing of heterogeneously integrated III-V photonics. According to the company, its PDK is already being used by over 20 companies to design and fabricate PASICs across a wide spectrum of applications.
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