Copper is too slow for AI. The era of silicon photonics (pre-packaged fiber optic between chips) is finally here.

Optical switches on an AI data center consume a staggering 10% of the total GPU compute power.

“An AI supercomputer with 400,000 GPUs is actually a 24-megawatt laser”

https://spectrum.ieee.org/co-packaged-optics

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what the fuck lol

Tgis was wild. Probably wont be used but this is wild..

https://youtu.be/5mIWo6dgTmI

Fucking wild.

Cool! The basic technology here is the microring resonator, which can also be a very effective sensor... That sensitivity seems like a bit of a double-edged sword here, because it makes temperature control critical to operation.

Driving energy efficiency innovation.