this post was submitted on 14 Jan 2024
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[–] [email protected] 102 points 9 months ago (27 children)

Japan's current fiber-optic commercial internet connections use optical fiber transmission windows known as L and C multi-core fiber (MCF) bands to transport data long distances at record speeds. Meanwhile we (USA) have fiber back to copper and Cat3 for the last few hundred feet in most cities at best making the entire idea into a bottle neck.

[–] [email protected] 17 points 9 months ago (18 children)

There are a lot of very good reasons to switch back to copper for the last portion of a run. I highly doubt that consumer internet in Japan is terminating fiber directly into peoples' computers. Fiber is a lot more expensive both for the line, to run it, more prone to breakage, the network cards are more expensive, etc. It's really not needed for most purposes.

Also no one uses cat3 for data and it can't be run for 'hundreds of feet'. And LC fiber IS used in the US - that's a kind of connector not the kind of fiber.

[–] [email protected] 2 points 9 months ago (2 children)

Typing from my Tokyo fiber-to-the-home connection now. They ran it off the pole, installed a little thing in my house, ran the fiber to the modem they make me rent, and it works like a charm.

[–] [email protected] -2 points 9 months ago (1 children)

Yeah, it's not terminated in your computer though for all the reasons I said.

[–] [email protected] 2 points 9 months ago

I don't think I understand unless you're expecting me to buy some router and network cards that natively support fiber to go from the modem (which is fiber in from the pole outside).

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