Faster Fiber Optic Speeds Reshape Data Center Geography

Data center developers face significant constraints, with an estimated $4 trillion in spending expected by the decade's end, limited by political and power-grid factors. Relativity Networks announced $22 million in SAFE note funding on Tuesday, aiming to leverage its novel hollow-core fiber technology. This rare technology transmits data 30% faster than conventional fiber by utilizing a vacuum chamber, approaching the theoretical speed of light.

CEO Jason Eisenholz explained that while the latency difference of microseconds was negligible for smaller AI compute systems, it becomes critical as systems scale across vast campuses. Reducing latency by 30% allows data center operators to span 30% larger distances before latency becomes a bottleneck. This innovation could fundamentally change how data centers are planned and built, optimizing geography.

Eisenholz views this as the third era of AI optimization, following compute and internal networking. The technology is particularly suited for multi-campus deployments where existing data centers are interconnected to function as a single, synchronized unit. This addresses the need to distribute compute across multiple locations to access necessary power.