Japanese Institute breaks optical fiber speed record with 22.9 petabits per second — 1,000 times faster than existing cables

stopthatgirl7@kbin.social to Technology@lemmy.world – 646 points –
Japanese Institute breaks optical fiber speed record with 22.9 petabits per second — 1,000 times faster than existing cables
tomshardware.com

Speedy thing goes in, speedy thing comes out.

70

You are viewing a single comment

optical fiber speed record

Isn't that simply the speed of light, always? ;-)

Nope, if we are talking about the actual speed of the signal optical fiber is relatively slow at ~1/3 c, compared to air or copper where it's almost c. They're using 'speed' meaning bandwidth. A van full of sd cards would have a massive bandwidth, but a very slow actual speed

Actually it's about 2/3 c, the refractive index of normal telco fibers (G.652 and G.655) is around 1.47

It is pretty confusing that we refer to the volume of data as speed in networks.

We don't. The measure is bits/s, which is a speed because it's measured relative to time. 1 TB is a volume/amount, 1TB/s is a speed.