Space-Made Fiber Enters Mass Production For AI Interconnects As LEO Factories Sign Long-Term Deals
What began as a series of science experiments has evolved into a new branch of the semiconductor supply chain. Three materials companies and a pair of orbital manufacturing firms today announced that they have started mass production of ultra-low-loss optical fiber and specialty components in low Earth orbit, targeting the needs of hyperscale AI data centers.
Corning, Sumitomo Electric, and Prysmian have partnered with Varda Space Industries and UK-based Space Forge to produce fiber preforms and certain high precision glass components in microgravity. These are then returned to Earth in re-entry capsules and finished into cable, transceivers, and other optical parts at existing plants.
The companies claim that the absence of convection and sedimentation during crystal growth and glass formation in orbit yields fibers with significantly fewer defects and more uniform refractive indices. As a result, they report attenuation and dispersion characteristics that are 10 to 20 times better than current state-of-the-art fibers used for long-reach data center interconnects.
“AI clusters are now pushing tens of kilometers of fiber inside and between campuses, and they are running out of headroom,” said a Corning executive. “Space-manufactured fiber lets us extend reach and bandwidth without exotic repeater schemes or explosive increases in power.”
SpaceX and Rocket Lab have signed multi-launch agreements to carry the manufacturing modules and re-entry vehicles, while Redwire and other space infrastructure companies are supplying robotic handling systems and thermal control units. People familiar with the contracts said the combined backlog for “compute supply chain” missions is now worth several billion dollars through the mid-2030s.
Hyperscale operators are among the early customers. Two U.S. cloud providers and one Chinese internet group have agreed to long term offtake agreements that reserve a portion of the new orbital production capacity for their AI data center needs. Those contracts, which run over 10 years, cover fiber for both intra-campus links and regional metro rings that connect large AI training sites.
The shift to space-made components is not without challenges. The cost per kilometer of the new fiber is several times higher than terrestrial alternatives, and production is vulnerable to launch delays and on-orbit failures. Regulators are also scrutinizing the increase in industrial activity in orbit, given concerns about debris and congestion.
Yet proponents argue that even modest improvements in interconnect performance can unlock valuable efficiency gains in large AI clusters, where networking overhead and idle GPU time are increasingly important constraints. For component suppliers, the new category offers a way to differentiate amid intense competition and commoditization in more traditional segments.
If orbital manufacturing proves reliable at scale, analysts expect the model to expand beyond fiber into other high value, physics-sensitive components, potentially reshaping parts of the broader electronics and photonics supply chain.