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The binding constraint in large-scale AI data center design runs through the interconnect layer.
Moving data between accelerators at the speeds that modern AI workloads demand exceeds what copper traces can reliably deliver at scale, a limit set by signal attenuation over distance and heat that accumulates as data rates climb.
Photonics replaces electrical signaling with light.
Where copper carries electrical current, optical interconnects carry modulated light through fiber, a medium that propagates with far lower signal loss and far higher bandwidth potential per physical link.
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