Quintessent Raises $40 Million Series A and Begins Sampling First Product for AI Optical Interconnects
Quintessent, an innovator in resilient and low-cost AI datacenter optical interconnect products, today announced it has raised $40 million in an oversubscribed Series A investment round. Quintessent also announced the start of customer sampling of its single-chip quantum dot-based DWDM comb laser– a new class of light source designed to simplify optical connectivity for rapidly scaling AI clusters.
Series A Funding Round is Oversubscribed
The Series A funding round was led by Cycle Capital, along with new investors Goldman Sachs XIG-Industry Ventures, Hina Liberty Capital, Susquehanna International Group, InterVest, Safar Partners, and Ciena. Existing investors including Foothill Ventures, M Ventures, Osage University Partners, and Sierra Ventures also participated in the round.
Both funding and product milestones arrive at an inflection point for AI infrastructure. With the formation of the Open Compute Interconnect (OCI) MSA – backed by the industry’s largest chipmakers and hyperscalers – the market has converged on wide-and-parallel dense wavelength division multiplexing (DWDM) architectures as a leading solution for optical scale-up networks, requiring many orders of magnitude more laser sources to interconnect future AI clusters. At the same time, the massive AI infrastructure buildout has collided with a worldwide shortage of Indium Phosphide (InP) lasers; a light source that almost all of today’s optical interconnects universally depend on.
