Blistering Data Transmission Record Clocks Over 1 Petabit Per Second (newatlas.com) 42
An anonymous reader quotes a report from New Atlas: Researchers in Japan have clocked a new speed record for data transmission -- a blistering 1.02 petabits per second (Pb/s). Better yet, the breakthrough was achieved using optical fiber cables that should be compatible with existing infrastructure. For reference, 1 petabit is equivalent to a million gigabits, meaning this new record is about 100,000 times faster than the absolute fastest home internet speeds available to consumers. Even NASA will "only" get 400 Gb/s when ESnet6 rolls out in 2023. At speeds of 1 Pb/s, you could theoretically broadcast 10 million channels per second of video at 8K resolution, according to the team.
The new record was set by researchers at Japan's National Institute of Information and Communications Technology (NICT), using several emerging technologies. First, the optical fiber contains four cores -- the glass tubes that transmit the signals -- instead of the usual one. The transmission bandwidth is extended to a record-breaking 20 THz, thanks to a technology known as wavelength division multiplexing (WDM). That bandwidth is made up of a total of 801 wavelength channels spread across three bands -- the commonly used C- and L-bands, as well as the experimental S-band. With the help of some other new optical amplification and signal modulation technologies, the team achieved the record-breaking speed of 1.02 Pb/s, sending data through 51.7 km (32.1 miles) of optical fiber cables.
The new record was set by researchers at Japan's National Institute of Information and Communications Technology (NICT), using several emerging technologies. First, the optical fiber contains four cores -- the glass tubes that transmit the signals -- instead of the usual one. The transmission bandwidth is extended to a record-breaking 20 THz, thanks to a technology known as wavelength division multiplexing (WDM). That bandwidth is made up of a total of 801 wavelength channels spread across three bands -- the commonly used C- and L-bands, as well as the experimental S-band. With the help of some other new optical amplification and signal modulation technologies, the team achieved the record-breaking speed of 1.02 Pb/s, sending data through 51.7 km (32.1 miles) of optical fiber cables.
10.000.000 ch/s (Score:2)
Re:10.000.000 ch/s (Score:4, Informative)
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What definition channels? In Japan they are broadcasting in 8k. The video is 8k at up to 120 FPS with 22.2 channel sound.
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What is it about these metals? Lead/sec... gold per sq.. ????
What about Terbium? Has that already been done? Someone needs to look into Ytterbium!
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"10 million channels per second" What kind of unit of measure is that?
Why couldn't they use more standard units of measure like Olympic-sized swimming pools or football fields?
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How many Libraries of Congress per second does that translate to?
Re:10.000.000 ch/s (Score:5, Interesting)
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All of them .
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I don't know why I'm responding to an idiot AC, but.. Look up "Internet Backbone".
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Existing Infrastructure (Score:2)
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https://www.datacenterknowledg... [datacenterknowledge.com]
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That appears to be a cable of 20 fiber pairs, with each fiber in each pair still having a single core.
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20 fiber pairs means 5 sets of 4 fibers each. If one can use 4 fibers for 1pbps then a cable of 20 fibers could handle 5pbps. The math is easy. The solution uses existing fibers and frequencies.
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There are two things happening in the article; 4 fibers wrapped in the same size cladding as a single fiber (though the fibers are of a common type), and SDM or space-division multiplexing. The experiment uses both, but there is nothing to indicate that SDM would not work over traditional fibers that are not clad together, just that cladding them together makes a cable of the same size as existing cables with more fiber. The article does not say anything about the effects of any coupling between the 4 cla
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What prevents SDM from working on 4 independent fibers vs 4 fibers clad together? Why is 4 fibers clad together part of the solution to higher bandwidth? Like you said, 4 clad fiber is about the physical size and says nothing about coupling/interference issues. It is the SDM signaling that allows for higher bandwidth, and it happens to require 4 fibers - the cladding bit is a red herring.
Usable? (Score:2)
I have a hard time imagining the termination equipment that you would have to have to actually apply this technology. At some point you have to break out the channels into small enough parts that you can have practical electronics to source/sink digital signals from/to.
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I imagine you'd usually, outside a massive backbone, terminate these into passive optical mux/demux equipment before it ever got near electronic routers or switches.
https://www.precisionot.com/mu... [precisionot.com]
https://www.sciencedirect.com/... [sciencedirect.com]
https://www.lumentum.com/en/op... [lumentum.com]
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But lots and lots of them. A petabit would feed as many as 10,000 breakout mainframes, each handling 100 gigabit. That's a lot of pretty high powered hardware.
All coming from the same mux/demux unit? Can you have more than one on the same fiber media, or can you cascade them? Either way you have an incredible many-to-one concentration.
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.. and it's not uncommon for service providers or content providers to have multi-terabit port channels between inter-city pairs on their backbone.
Jeez. It feels like not that long ago that Fast Ethernet was considered a monumental achievement and where all the VC dollars were going. I feel so old now.
Somebody please up-vote the quoted post.
I thought the proper unit was LOC/s (Score:2)
Library of Congress per Second?
Teleportation? (Score:2)
To say the least, there are a few (cough) additional technical hurdles to overcome first. However, at these speeds, I wonder if it could represent one of the technologies necessary to allow transmission of the exact state of lumps of matter with reconstruction on the other end to become feasible. It is difficult to imagine other applications where this kind of insane speed would be necessary (apart from denial of service attacks).
Red Herring (Score:2)
What is it good for? (Score:2)
10 million channels in 8k resolution and the content still stinks. Even 10 million turds polished to shine are still turds.
Mr Ed thanks you (Score:2)
0.02 PPS (Score:2)
How many of us would be happy with just 0.02 PPS from our provider? (I'm looking at you Spectrum.)