Featured Articles

Analysts expect ARM to do well next year

Analysts expect ARM to do well next year

British chip designer ARM could cash in on the mobile industry's rush to transition to 64-bit operating systems and hardware.

More...
Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Samsung has lost smartphone market share, ending the quarter on a low note and Xiaomi appears to be the big winner.

More...
Intel Broadwell 15W coming to CES

Intel Broadwell 15W coming to CES

It looks like Intel will be showing off its 14nm processors, codenames Broadwell, in a couple of weeks at CES 2015.

More...
Gainward GTX 980 Phantom reviewed

Gainward GTX 980 Phantom reviewed

Today we’ll be taking a closer look at the recently introduced Gainward GTX 980 4GB with the company’s trademark Phantom cooler.

More...
Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac has been in the nettop and mini-PC space for more than four years now and it has managed to carve…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Tuesday, 26 June 2012 12:31

Boffins transmit data at 2.5 terabits per second

Written by Nick Farrell

y exclamation

Twisted vortex beams

 A team of American and Israeli boffins have used twisted vortex beams to transmit data at 2.5 terabits per second.

This makes it about the fastest wireless network that we can think of. The technique is likely to be used in the next few years.

Twisted signals use orbital angular momentum to stuff more data into a single stream. WiFi, LTE, COFDM modulates the spin angular momentum of radio waves, not the angular momentum.

The boffins, Alan Willner and fellow researchers from the University of Southern California, NASA’s Jet Propulsion Laboratory, and Tel Aviv University, twisted together eight ~300Gbps visible light data streams using orbital angular moment.  Each of the eight beams has a different level of twist.

The beams are bundled into two groups of four, which are passed through different polarization filters. One bundle of four is transmitted as a thin stream while the other four are transmitted around the outside.

The beam is then transmitted over open space (just one meter in this case), and untwisted and processed by the receiving end. 2.5 terabits per second is equivalent to 320 gigabytes per second, or around seven full Blu-ray movies per second. Needless to say there is a lot of porn that can be shifted on that sort of network.


Last modified on Tuesday, 26 June 2012 13:00

Nick Farrell

E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments