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.

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The financial types are generally more interested in hollow core fiber, to get their latencies even further down for high frequency trading. Because light travels at almost c in hollow core but only at 2/3 c in fiber core.

So is hollow core fiber a vacuum or is it just hollow? I've never heard of that tech.

Think glass pipe versus glass cylinder or rod. Though, I don't think the hollow core is fully empty, it has some structure to it.

Here is an example

Source: https://www.rp-photonics.com/hollow_core_fibers.html

I work with fibre and have never stopped to think if it is hollow or not. Thanks for this