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.