this post was submitted on 07 Dec 2023
652 points (99.5% liked)

Technology

59446 readers
3684 users here now

This is a most excellent place for technology news and articles.

Our Rules

  1. Follow the lemmy.world rules.
  2. Only tech related content.
  3. Be excellent to each another!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, to ask if your bot can be added please contact us.
  9. Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago
MODERATORS
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
652
Japanese Institute breaks optical fiber speed record with 22.9 petabits per second — 1,000 times faster than existing cables (www.tomshardware.com)
submitted 11 months ago by [email protected] to c/[email protected]
70 comments fedilink hide all child comments
 

Speedy thing goes in, speedy thing comes out.

you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 33 points 11 months ago (8 children)

Wallstreet just put in a bulk order.

[–] [email protected] 29 points 11 months ago (1 children)

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.

[–] [email protected] 3 points 11 months ago (2 children)

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

[–] [email protected] 7 points 11 months ago (2 children)

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

[–] [email protected] 4 points 11 months ago

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

[–] [email protected] 2 points 11 months ago (1 children)

How do you weld that?

[–] [email protected] 1 points 11 months ago

Absolutely no idea.

[–] [email protected] 2 points 11 months ago* (last edited 11 months ago)

I think that both hollow core fibers filled with air and others with just vacuum exist, but it's a bit far from my operational reality, so I'm not that sure. I just read in industry news that euNetworks has deployed 45 km of Lumenisity hollowcore fiber and that Microsoft bought Lumensity

load more comments (6 replies)