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from the just-milliseconds-to-reach-month's-bandwith-cap dept.
Demonstration of World Record: 319 Tb/s Transmission over 3,001 km with 4-core fiber:
Researchers from the National Institute of Information and Communications Technology (NICT, President: TOKUDA Hideyuki, Ph.D.), Network Research Institute, succeeded the first S, C and L-bands transmission over long-haul distances in a 4-core optical fiber with standard outer diameter (0.125 mm). The researchers, lead by Benjamin J. Puttnam, constructed a transmission system that makes full use of wavelength division multiplexing technology by combining different amplifier technologies, to achieve a transmission demonstration with date-rate of 319 terabits per second, over a distance of 3,001 km. Using a common comparison metric of optical fiber transmission the data-rate and distance produce of 957 petabits per second x km, is a world record for optical fibers with standard outer diameter.
In this demonstration, in addition to the C and L-bands, typically used for high-data-rate, long-haul transmission, we utilize the transmission bandwidth of the S-band, which has not yet been used for further than single span transmission. The combined >120nm transmission bandwidth allowed 552 wavelength-division multiplexed channels by adopting 2 kinds of doped-fiber amplifier together with distributed Raman amplification, to enable recirculating transmission of the wideband signal. The standard cladding diameter, 4-core optical fiber can be cabled with existing equipment, and it is hoped that such fibers can enable practical high data-rate transmission in the near-term, contributing to the realization of the backbone communications system, necessary for the spread of new communication services Beyond 5G.
The results of this experiment were accepted as a post-deadline paper presentation at the International Conference on Optical Fiber Communications (OFC 2021).
(Score: 4, Insightful) by beernutz on Wednesday July 14 2021, @06:50PM (10 children)
I was under the impression that this was meant for long haul and backbone deployments more than fiber to the curb or premise.
(Score: 2) by fakefuck39 on Thursday July 15 2021, @12:41AM (8 children)
The whole point of DWDM solutions is to squeeze more bandwidth out of fiber that's already there. Think the dark fiber loops put underground in the 80's. Most of EU those cables are rented by the government to ISPs, with a lot of competition, which is why you have dirt cheap internet there. Here we usually rent the loops to private companies for WAN type service.
This would be useful for new deployments. Here's the thing - why? If you're laying down new lines and need more bandwidth, you just put more cables in. So instead of 10 cables, you can lay down 50, with an extra inch in radius.
This is not groundbreaking - it's a solution looking for a problem. There is another actual problem - how to get more bandwidth out of the existing cabling that's already underground and under the sea. This does nothing for that.
(Score: 0) by Anonymous Coward on Thursday July 15 2021, @01:34AM (7 children)
Heaps of reasons that may or may not be related to Internet for the consumer market.
Supercomputing, Square Kilometer Array, CERN data acquisition and transfer.
Fuck off you stupid dweeb that fiber is indeed not for you.
(Score: 2) by fakefuck39 on Thursday July 15 2021, @01:41AM (6 children)
so which of the things you list have this issue of "cable can be 2mm inch in diameter, but not 4mm." do tell.
(Score: -1, Flamebait) by Anonymous Coward on Thursday July 15 2021, @01:51AM (5 children)
What does the 3mm thinness of your prick have to do with doped fiber?
Oh, right, only your ADHD mind makes those connections.
(Score: 2) by fakefuck39 on Thursday July 15 2021, @04:09AM (4 children)
Is the thickness of random male penises on your mind a lot? I guess after being an incel for so long you've gotten into tranny porn? You ever wipe your ass nice and clean w/ the wet nap, but then just massage the butthole w/ the napkin a little more, you know, for that extra clean? Ever have invasive thoughts? They just come out of nowhere, make you a little uncomfortable, and you want them to go away? Enjoy thinking about my dick. I know I enjoy knowing you do.
(Score: -1, Troll) by Anonymous Coward on Thursday July 15 2021, @04:57AM (3 children)
Dickhead ponders why his postings evoke the dicks in the mind of those who read them!?!
The miracle here is the dickhead has enough neurons to ponder and not that it has too few of them to recognize himself in a mirror.
(Score: 2) by fakefuck39 on Thursday July 15 2021, @05:56AM (2 children)
I do not for one minute wonder why you are thinking about dick. That was resolved a long time ago - you are an incel and a social reject, and have been denied contact by anything remotely attractive of the opposite sex, that you have sloped to the smelly crunchy sock bottom of porn, which involves dick. In fact, the only reason I'm able to keep this thread going for my entertainment, is you lack human contact so much, for you typing on a website is socializing. Zero doubt about what's going on here.
(Score: -1, Troll) by Anonymous Coward on Thursday July 15 2021, @06:20AM (1 child)
Ah, everything falls in place, the order of the Universe is unaltered: a dickhead knee-jerkingly projecting his personal experience, no neurons required.
At least facefuck39 is already at peace with his dickheadishness, he doesn't object being called so anymore. Congrats, dickhead.
(Score: 2) by fakefuck39 on Thursday July 15 2021, @10:16PM
and yet here you are, looking at things normal people see as fiber cables, and thinking of penis. But I gotcha, you constantly talking about dicks is me projecting my personal experience. My personal experience is repeatedly shitting in the open mouth of a social reject, and you coming back with "may I please have some more." What's your personal experience with this conversation? How many tshirts with cum do you have on the floor right now? How much tranny porn have you watched this week? How about today - how much have you thought about dick today? How many times per day do you think about the dick?
(Score: 2) by driverless on Thursday July 15 2021, @06:14AM
In any case I beat that rate several years ago and got over 500Tb/s: NAS tossed over office partition.