HyperLight Corporation, a thin-film lithium niobate photonics company, has raised $80 million in a Series C round led by MediaTek. The round included participation from UMC Capital, Jabil, Foxconn, EDBI, CDIB-TEN Capital and Qatar Investment Authority, alongside strategic investors from silicon IC and networking firms. The company develops TFLN technology for AI infrastructure optical interconnects, offering higher bandwidth and lower power consumption. Its TFLN Chiplet Platform supports 200G-per-lane operation, with 400G-per-lane solutions now sampling. HyperLight recently announced a manufacturing partnership with UMC and Wavetek for high-volume production on six-inch and eight-inch wafers. The funding will expand manufacturing capacity, accelerate customer qualification and scale the platform. CEO Mian Zhang said the round brings together companies across the AI infrastructure value chain.

Celestial AI, a Sunnyvale-based startup, has raised $56 million in Series A funding led by Koch Disruptive Technologies, with participation from Temasek's Xora Innovation fund, The Engine, Tyche Partners, M-Ventures, IMEC XPand and Fitz Gate. The company has developed Photonic Fabric, a proprietary hardware and software platform that uses hybrid photonic-electronic technology for machine learning chipsets. The platform enables optically addressable memory and compute within chip and chip-to-chip systems, leveraging electronics for computing and photonics for high-speed, low-power data movement. The funding will support global engineering team expansion, product development and strategic supplier partnerships, including with Broadcom, to build Celestial AI's Orion AI accelerator products. The company aims to address efficient data movement challenges in computing as AI model complexity increases.