Photonic Fabric: Celestial AI Secures $250M Series C Funding

 SANTA CLARA, CA – March 11, 2025 – Celestial AI, creator of the Photonic Fabric optical interconnect, today announced that it has raised $250 million in its Series C1 funding round led by Fidelity Management & Research Company, bringing the total capital raised to date to more than $515 million. New investors include funds and […]

Photonic Interconnect: Lightmatter Joins UALink Consortium

Dec. 18, 2024, MOUNTAIN VIEW, Calif. –Photonic interconnect company Lightmatter has joined the Ultra Accelerator Link Consortium (UALink), an industry initiative focused on creating high-speed, low-latency open interconnect standards for scale-up AI systems. As a Contributor member, Lightmatter will apply its Passage technology—a 3D-stacked photonic engine—for accelerator-to-accelerator communication, enabling unprecedented performance in AI clusters. The UALink […]