Nvidia · Meta · China · Samsung · Tom's Hardware
AI data centers require 36 times more fiber than designs with standard servers
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Major Chinese optical fiber manufacturers have booked orders stretching into early 2027, as AI data center construction drives demand growth that the supply chain cannot match, according to a DigiTimes report.
Key facts
- Global fiber prices have risen roughly 70% from a 2021 trough of $3.70 to approximately $6.30 per fiber-kilometer
- North American demand growth is projected at 22% to 25% this year, while supply expansion trails at 12% to 19%, according to Rebio Group estimates
- Data center fiber demand grew roughly 76% year-on-year in 2025, according to CRU data cited by various industry publications, and the segment is projected to account for 30% of total global fiber
- It signed a $6 billion supply agreement with manufacturer Corning in January, which also disclosed two additional deals of similar scale with unnamed hyperscalers in its Q1 2026 earnings
Summary
The scale of demand from AI infrastructure dwarfs anything the fiber industry could ever have planned for. All this is because AI training and inference clusters require far denser interconnect fabrics than conventional cloud infrastructure. Unfortunately, manufacturing optical fiber preforms, the glass rods from which fiber is drawn, is a technically demanding process with high barriers to entry. Compounding the bottleneck, manufacturers have shifted production from standard G.652D fiber used in telecom networks to higher-margin G.657A fiber suited to AI data centers and drone applications.