photonic-integrated-circuits
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Dave Welch
Dave Welch is the founder and CEO of AttoTude, a Menlo Park deep-tech startup building the world's first terahertz interconnect that runs over wire instead of fiber or photonics, aimed at unclogging the data-movement bottleneck inside AI and hyperscale data centers. A co-founder of Infinera, where he pioneered large-scale photonic integrated circuits, and former CTO at SDL, Welch holds more than 200 patents, has authored roughly 300 publications, and is a member of the National Academy of Engineering. In April 2025 AttoTude raised a $50M Series B, pushing total funding past $90M.
Matt Crowley
Matt Crowley is the CEO of SCINTIL Photonics, a fabless silicon-photonics company in Grenoble building single-chip DWDM laser engines for AI data centers. A Princeton-trained physicist who grew up in a family of small-business owners, he spent 25 years turning lab-stage technologies into volume products, founding and exiting two MEMS startups (Sand 9 and Vesper Technologies, the latter acquired by Qualcomm) before taking the helm at Scintil in late 2024. He argues the next bottleneck in AI is the network, not the chip, and is betting that light - not copper - will carry it.
Mian Zhang
Mian Zhang is the co-founder and CEO of HyperLight, the Cambridge-based deep-tech company commercializing thin-film lithium niobate (TFLN) photonics. A Cornell-trained physicist who did his foundational work in Marko Loncar's lab at Harvard, Zhang took a notoriously hard-to-manufacture optical material and shrank it onto silicon-style chips - cutting signal loss roughly 100-fold in work published in Nature. HyperLight now runs the industry's first high-volume, qualified 6-inch TFLN production line and is pushing 400G-per-lane photonic circuits into hyperscale AI data centers through partnerships with UMC, Wavetek, and Jabil.