Data transmission reaches 16.4 Tbps Over 1,500 Miles
Arrives before it left
LES BOFFINS ET BOFFINETTES at Alcatel-Lucent have managed to send optical data at speeds of 16.4 Tbps over a distance of over 1,500 miles.
The work was part of a research programme to get a stable 100 Gbps Ethernet connection.
According to Gizmodo, les boffins suddenly hit on the idea of using a highly linear balanced photoreceiver and an ultra-compact, temperature-insensitive coherent mixer.
It was just as well they had one lying around the lab to plug in.
Anyway, it means that you will be able to shove a Blu-ray movie down the wire in three seconds instead of the 15 seconds the fastest technology can currently manage.
Of course if it goes too fast the data would arrive before it had left and the boffins will have aged 20 years. Damn you, Einstein. µ
L'inq
Gizmodo
Comments
actually...
at 16.4Tbps you would be able to transfer a dual layer bluray disc in 28 millisecondsActually Actuall...
More factors come into play besides line speed so it would not be 28miliseconds yes the speed at which the data "CAN" transfer over the line would Theoretically be, but read and write speeds of data storage onboth ends limit the overall transfer speed.
Just means theres more bandwith for more streams, without degrading connection speed
Yes, but
@ Nick: You don't think you can have that 16.4Tbps line all to yourself do you?yes but what?
I'm well aware of the technicalities of achieving this speed over that distance using TDM, DWDM and EDFAs, being a researcher in optical fibre technologies.My comment was made within the context of the statement within the article that you could transfer a bluray disc in three seconds (also much faster than data storage could supply).
How far from the exchange?
Is that a BT 16.4Tbps that drops to about 1Tbps if you're more than a mile from the exchange?Actually you could ....
dump it all into some ram banks. 64 gigabytes of ram is not to farfetched.Well Nick...
Well Nick, since you work in the optical field, you should be aware of (b)it's and (B)ytes. 14.6Tbps (or teraBITS per second) is actually 0.0142578125 teraBYTES, which equals 15 GigaBYTES. Since a Blue-ray disk is around 50 GigaBYTES, then 50 GigaBYTES divided by 15 gigaBYTES per second equal about 3 seconds. Wow eh.too much porn
That's about 10000 uncompressed HD streams at once, 5000 if they are 60p...Don't think I know anyone that can handle that much porn...
Wel...
Wel..Shoudn't you divide by 8 instead of 1024 to get bytes out of bits? I would say YES..Using the 1 kbyte is 1000 bytes methode (the easy way).. You (we) should be able to download 123 bluray movies in 3 seconds. Granted that there is a connection time needed to make the transfer, which can lead the grandtotal downloadtime up to 3 seconds...Tb or Tib?
Ah, but was it terabits (10 ** 12 bits) or tebibits (2 ** 40 bits)? Considering there's about a 10% difference, we wouldn't want anybody to feel cheated, would we?Well Jay...
Could you please explain to me how you got 0.0142578125 teraBYTES from 16.4 terabits?I guess you could 16.4*0.87 for maybe about 13% of overhead....we get 14.268 terabits per second, divided by 8 BITS in a byte (assuming there isn't additional bits for other error correction) we still get 1.7835 TeraBYTES a second....which gives us the 28 miliseconds that Nick was original talking about....
Your math doesn't make sense by orders of magnitude....