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: 2, Troll) by fakefuck39 on Wednesday July 14 2021, @06:10PM (15 children)
This is pretty useless. The whole point of DWDM is to get more bandwidth over existing lines. They're using doped fiber here - so while the diameter is standard, the glass itself is not. If you're going to have to lay new lines to get more bandwidth, you can just run more cables while you're at it.
>The standard cladding diameter, 4-core optical fiber can be cabled with existing equipment
and they purposely add this misleading bit. this doesn't mean you can run their tech over the existing lines. it means the existing lines will work at their standard signaling rate, with your old equipment. it means to use their tech, you need new equipment, and you need new cables.
(Score: 0) by Anonymous Coward on Wednesday July 14 2021, @06:19PM
>> it means to use their tech, you need new equipment, and you need new cables.
Yes, but no one said it would be cheap to get your porn at 319Tb/s.
(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.
(Score: 0) by Anonymous Coward on Wednesday July 14 2021, @07:19PM (2 children)
No fucking shit. That's why it doesn't say or imply that.
Right, new cables which can be made with existing equipment.
(Score: 0) by Anonymous Coward on Wednesday July 14 2021, @08:30PM (1 child)
Yes, but his point was that this makes the tech far less interesting.
Previous evolutions did not have these requirements and so were a 'free upgrade' to existing lines.
Like the existing submarine cables for which this tech is not useful.
(Score: 2) by c0lo on Thursday July 15 2021, @01:43AM
Really? You think so?
For example, how do you do astronomical interferometery [wikipedia.org] on over a million of antennas [skatelescope.org] across two continents [wikipedia.org] without large bandwidth data transfer?
https://www.youtube.com/watch?v=aoFiw2jMy-0
(Score: 0) by Anonymous Coward on Wednesday July 14 2021, @07:08PM
ah so, now i know why that day the test was done felt like reality was made from straw with a paint of plastic. must have overloaded the "solidity amplifiers" of the test chamber the aliens are keeping us in ^_^
(Score: 2) by Opportunist on Wednesday July 14 2021, @07:41PM (3 children)
Of course one has to understand that this would transfer the monthly allotted amount of the average subscriber in about 20 milliseconds, but still nice.
(Score: 4, Funny) by Anonymous Coward on Wednesday July 14 2021, @07:54PM (1 child)
If you subscribe to one of AT&T's unlimited data plans, you can raise your monthly allowance from 250GB to 500GB for $24.99/month.
(Score: 2) by Opportunist on Thursday July 15 2021, @05:46AM
...and stave off cutoff for another millisecond.
(Score: 3, Informative) by martyb on Wednesday July 14 2021, @11:53PM
/me suggests taking a look at the story's "dept." line:
;^)
Wit is intellect, dancing.
(Score: 1, Troll) by Gaaark on Wednesday July 14 2021, @08:06PM
I see a river
It's oceans that I want
You have to give me everything
Everything's not enough
I want it all. Porn i mean... blonde gold. Texas bigguns.
Sorry... where was i?
--- Please remind me if I haven't been civil to you: I'm channeling MDC. ---Gaaark 2.0 ---
(Score: 2, Funny) by Snotnose on Wednesday July 14 2021, @10:04PM
To cover the porn your mom has made.
Your sister though, keep working scientists.
Don't even get me started on your sister with your mother...
Relationship status: Available for curbside pickup.