Enlightra Raises $15 Million to Break the "Copper Wall"
The startup aims to replace electrical cables with silicon photonic lasers to speed up AI clusters.
Olivia Sharp
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Enlightra raised $15 million to develop silicon photonic lasers that replace copper cables, aiming to boost speed and efficiency in AI clusters.
Enlightra, a Swiss-American deeptech startup, emerged from stealth on Thursday with $15 million in Series A funding. The round, which included participation from Y Combinator and Runa Capital, targets a fundamental physical bottleneck in scaling artificial intelligence: data transmission.
The Interconnect Challenge
As AI training clusters grow to tens of thousands of GPUs, the copper cables used to connect them are reaching their physical limits in terms of bandwidth and distance—a barrier known as the "copper wall."
- Photonic Solution: Enlightra is commercializing multi-wavelength laser technology that transmits data using light rather than electricity.
- Efficiency Gains: The company claims …
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