With further refinement and scaling, internet providers could ramp up standard speeds without overhauling current fiber optic infrastructures.
Don't worry. They'll find some way to use this to justify massive rate increases.
This is a most excellent place for technology news and articles.
With further refinement and scaling, internet providers could ramp up standard speeds without overhauling current fiber optic infrastructures.
Don't worry. They'll find some way to use this to justify massive rate increases.
We must make ISPs a public service owned by the people. Who can argue that internet isn't essential to being a regular member of society? These companies rob us and use their monopolies to manipulate us.
First of all some corrections:
By constructing a device called an optical processor, however, researchers could access the never-before-used E- and S-bands.
It's called an amplifier not processor, the Aston University page has it correct. And at least the S-band has seen plenty of use in ordinary CWDM systems, just not amplified. We have at least 20 operational S-band links at 1470 and 1490 nm in our backbone right now. The E-band maybe less so, because the optical absorption peak of water in conventional fiber sits somewhere in the middle of it. You could use it with low water peak fiber, but for most people it hasn't been attractive trying to rent spans of only the correct type of fiber.
the E-band, which sits adjacent to the C-band in the electromagnetic spectrum
No, it does not, the S-band is between them. It goes O-band, E-band, S-band, C-band, L-band, for "original" and "extended" on the left side, and "conventional", flanked by "short" and "long" on the right side.
Now to the actual meat: This is a cool material science achievement. However in my professional opinion this is not going to matter much for conventional terrestrial data networks. We already have the option of adding more spectrum to current C-band deployments in our networks, by using filters and additional L-band amplifiers. But I am not aware of any network around ours (AS559) that actually did so. Because fundamentally the question is this:
Which is cheaper:
Currently, for us, there is enough spectrum still open in the C-band. And our hardware supplier is only just starting to introduce some L-band equipment. I'm currently leaning towards renting another pair being cheaper if we ever get there, but that really depends on where the big buying volume of the market will move.
Now let's say people do end up extending to the L-band. Even then I'm not so sure that extending into the E- and S- bands as the next further step is going to be even equally attractive, for the simple reason that attenuation is much lower at the C-band and L-band wavelengths.
Maybe for subsea cables the economics shake out differently, but the way I understand their primary engineering constraint is getting enough power for amplifiers to the middle of the ocean, so maybe more amps, and higher attenuation, is not their favourite thing to develop towards either. This is hearsay though, I am not very familiar with their world.
remember kids, commit arson against your local ISP, and you will only be arrested for probably 20 years.
I remember the early 90's when fiber connection was being developed in research centers.
Researchers had found a way to transmit all of a country's phone calls' bandwidth through a simple fiber cable. Then, they wondered: what could we use this for?
This was a few years before the explosion of the internet...
1988 TAT-8 already went into productive use as the first transatlantic fiber optic connection. So the lab work must have happened in the 80's already.
It's compared to the average broaband speed in the UK, so it's not quite as exciting as it might sound ...
So it’s barely faster than my phones internet when I’m traveling through nature.
Source article is here https://www.aston.ac.uk/latest-news/aston-university-researchers-send-data-45-million-times-faster-average-broadband
One originally linked is re-post of re-post.
Its a shame i dont have an ethernet cable that fast or a motherboard with a network interface capable of that speed.
Great if i can get faster fibre into my home but my internal infrastructure is not up to the task. This wont be in the home until we can use fibre cables like we currently use ethernet cables.
Or is there some other tech that would replace ethernet that would handle those speeds. Also whats my wrote speed on my ssd?
Yeah i dont know if thisnis a tech thats meant for home, more likely large businesses with lots of devices all fighting for bandwidth.
It will only be used for corporations, but at some point we will also get it for our homes, but not yet. Also Theres still a lot of research to do before this will be used anywhere.
I'm highly suspicious about group dispersion over long distances. Today's infrastructure was developed for a certain range of frequencies. Broading it right away wouldn't be applicable that easy - we would need to introduce error correction which compromises the speed multiplier.
Too lazy to get the original paper though
The zero dispersion wavelength of G.652.D fiber is between 1302 nm and 1322 nm, in the O-band.
Dispersion pretty much linearly increases as you move away from its zero dispersion wavelength.
Typical current DWDM systems operate in the range of 1528.38 nm to 1563.86 nm, in the C-band.
Group dispersion in the E-band and S-band is lower than at current DWDM wavelengths, because these bands sit between the O-band and the C-band.
We already have transceivers that perform forward error correction. That technology is a decade+ old.
It is, but it compromises the speed exponentially with length/broadening
Dispersion compensation and FEC are separate layers of the cake, and work hand in hand.
I don't understand why, tho I do not have any kind of expertise here.
I suggest (Haven't read it), this paper proposes to send much denser and broadened signals around one carrier frequency (they use single mode). Due to dispersion they
Start to overlap with one each other. If you put more frequencies, you would have more overlaps and I fail to see how it won't lead to errors.
They all arrive at the broader time window, which again could be mitigated either by error correction, or by extending the time window.
"I haven't read it, but I assume these are things they didn't take into account."
Okay then.
Okay, let's read and find out whether we can find something that we don't know.
There's no paper, there is no letter, it's a simple statement at the institute page. The way science is being communicated nowadays is frustrating.
From the statement
However, alongside the commercially available C and L-bands, we used two additional spectral bands called E-band and S-band. Such bands traditionally haven’t been required because the C- and L-bands could deliver the required capacity to meet consumer needs.
So they indeed broadened the frequency range.
if there is a paper you probably can't read it because it's published behind a pay wall, because fuck normies i guess.
https://opg.optica.org/ol/fulltext.cfm?uri=ol-49-6-1429&id=547584
You can read their previous papers
that's cool. Unfortunately a lot of actual research is still pay walled.
My docter said i needed more fiber.