Skip to main content

Twisted light: New tech can transmit 70 DVDs worth of data per second

 

Twisted Light High-speed Data

A team of researchers at the University of Southern California have developed a data transmission technology capable of moving the equivalent of 70 DVDs in one second. Led by Alan Willner, an electrical engineering professor at USC, the team was able to improve upon existing twisted light technology to achieve throughput speeds of 2.56 terabits per second over a distance of approximately five feet.

“We didn’t invent the twisting of light, but we took the concept and ramped it up to a terabit-per-second,” Willner told The Bunsen Burner. “You’re able to do things with light that you can’t do with electricity. That’s the beauty of light; it’s a bunch of photons that can be manipulated in many different ways at very high speed.”

Willner said that his team’s implementation of the technology involves manipulating “phase holograms” to twist eight beams of light into a DNA-like helix. The resulting hologram is then able to carry data bits — zeroes and ones — independently on each beam at an extremely rapid rate.

According to researchers, the technology has potential applications in high-speed satellite communications, short terrestrial links or even in long-range fiber optic cables such as the ones used by Verizon’s FiOS service or Cablevision’s Optimum Lightpath.

Read

Twisted light: New tech can transmit 70 DVDs worth of data per second
Zach Epstein
Wed, 04 Jul 2012 15:20:19 GMT

Popular posts from this blog

Apple Launches Web Tool to Deregister Phone Numbers from iMessage

Apple today released a new web tool for users to deregister their phone number from iMessage in the event they switched to a non-Apple device. To deregister a phone number from iMessage, users simply enter their phone number in Apple's web tool, receive a free text message containing a code, and submit the code to complete the process. Users who still have their original iPhone can also transfer their SIM card back to the device and go to Settings -> Messages to turn iMessage off. 


Users switching from an iPhone to another device were often unable to receive SMS messages from another iPhone due to their phone number still being linked to iMessage. These specific errors with iMessage have been a well-known issue since 2011, which is when the messaging service debuted with iOS 5. They were also made even more apparent this past May, where a server glitch caused widespread message delivery problems. Apple was even sued over the matter in a California court, although the company cla…

Microsoft acquires iPhone email app Acompli

After accidentally announcing it a little early, Microsoft is officially confirming it has acquired email startup Acompli. The surprise acquisition means Microsoft is picking up a powerful email client for iPhone and Android in another move that further cements CEO Satya Nadella’s focus on cross-platform technologies. The Verge’s Casey Newton called Acompl "the Outlook for iPhone that Microsoft hasn’t yet built," and it seems Microsoft was equally impressed with the powerhouse email app. "We’re excited about what’s possible as we build on the app’s success and bring it together with work currently in progress by the Outlook team," the company said in a statement. "Our goal is to deliver fantastic cross-platform apps that support the variety of email services people use today and help them accomplish more." Recode first reportedthat Microsoft would make its latest acquisition official today; the company is said to be paying over $200 million for Acompli. A…

Apple will disconnect ‘obsolete’ first-gen Apple TV from iTunes in May

Apple has announced today it will drop iTunes support for some older devices from May 25. This includes the first generation Apple TV, and also any PC running Windows XP or Vista. The company is introducing new security changes which will prevent those devices from using the latest version of iTunes.
Apple says that the original Apple TV is an "obsolete Apple product" and will not be updated to support security changes. Only those with the second generation of Apple TV or later will be able to access the iTunes store.
Windows XP or Vista users won't be able to use the latest version of iTunes, but older Windows computers can still use previous versions without support from Apple. Those who do so, however, won't be able to make new purchases or re-download previous purchases on that computer. If you're on on XP or Vista, you'll need to upgrade to Windows 7 or later to continue using iTunes normally.
The writing was already on the wall for these devices: Wi…