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by falsandtru 807 days ago
The latest world record is updated to 378.9 Tbps by the same research group. Probably not yet published in English.

https://www.nict.go.jp/press/2024/03/29-1.html
1 comments
virtuallynathan 807 days ago
Pretty wild for a single fiber, but super involved, using 5 different doping type amps. Current systems use just EDFAs (Erbium). These guys used Erbium, Thallium, Bismuth, and others.
link
foobiekr 807 days ago
The latest one is also just more lambdas. Like that’s impressive but DWDM itself took a decade+ after gear was introduced.

Most of the time it’s easier to just add another few dozen fibers when laying cables.

link