DARPA Scientists Create Superfast Wi-Fi That Attaches Information to Light Beams

[jimmy olsen]

2.56TB per second!

http://www.sciencedaily.com/releases/2012/06/120625133349.htm

Scientists Twist Light to Send Data: Beams of Light Can Be Twisted and Combined to Transmit Data Dramatically Faster

ScienceDaily (June 25, 2012) — A multi-national team led by USC with researchers hailing from the U.S., China, Pakistan and Israel has developed a system of transmitting data using twisted beams of light at ultra-high speeds -- up to 2.56 terabits per second.

To put that in perspective, broadband cable (which you probably used to download this) supports up to about 30 megabits per second. The twisted-light system transmits more than 85,000 times more data per second.

Their work might be used to build high-speed satellite communication links, short free-space terrestrial links, or potentially be adapted for use in the fiber optic cables that are used by some Internet service providers.

"You're able to do things with light that you can't do with electricity," said Alan Willner, electrical engineering professor at the USC Viterbi School of Engineering and the corresponding author of an article about the research that was published in Nature Photonics on June 24. "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 and his colleagues used beam-twisting "phase holograms" to manipulate eight beams of light so that each one twisted in a DNA-like helical shape as it propagated in free space. Each of the beams had its own individual twist and can be encoded with "1" and "0" data bits, making each an independent data stream -- much like separate channels on your radio.

Their demonstration transmitted the data over open space in a lab, attempting to simulate the sort of communications that might occur between satellites in space. Among the next steps for the research field will be to advance how it could be adapted for use in fiber optics, like those frequently used to transmit data over the Internet.

The team's work builds on research done by Leslie Allen, Anton Zeilinger, Miles Padgett and their colleagues at several European universities.

"We didn't invent the twisting of light, but we took the concept and ramped it up to a terabit-per-second," Willner said. His team included Jian Wang, Jeng-Yuan Yang, Irfan M. Fazal, Nisar Ahmed, Yan Yan, Hao Huang, Yongxiong Ren and Yang Yue from USC; Samuel Dolinar from NASA's Jet Propulsion Laboratory; and Moshe Tur from Tel Aviv University.

Wang, the lead author, left USC after completing this research and is now a professor at the Huazhong University of Science and Technology in China.

This research was funded by the Defense Advance Research Projects Agency (DARPA) under the InPho (Information in a Photon) program.

[Phillip V]

We need to increase funding for the Defense Advance Research Projects Agency.

[Eddie Teach]

You don't happen to work for them, do you Phil?

[Ideologue]

Satellite transmission seems the only really valuable application, and transferring significant Internet communications to space poses some serious reliability and security problems.

I guess it would be tremendously useful for spacecraft, but that's an innovation in search of a market.

[Brazen]

You missed this far more exciting US military research snippet.

US Army develops weapons that send frickin' lightning bolts down frickin' laser beams:
http://www.army.mil/article/82262/Picatinny_engineers_set_phasers_to__fry_/

"We never got tired of the lightning bolts zapping our simulated (targets)," said George Fischer, lead scientist on the project.

[jimmy olsen]

You missed this far more exciting US military research snippet.

US Army develops weapons that send frickin' lightning bolts down frickin' laser beams:
http://www.army.mil/article/82262/Picatinny_engineers_set_phasers_to__fry_/

"We never got tired of the lightning bolts zapping our simulated (targets)," said George Fischer, lead scientist on the project.

[Ideologue]

You missed this far more exciting US military research snippet.

US Army develops weapons that send frickin' lightning bolts down frickin' laser beams:
http://www.army.mil/article/82262/Picatinny_engineers_set_phasers_to__fry_/

"We never got tired of the lightning bolts zapping our simulated PLA soldiers," said George Fischer, lead scientist on the project.

Restored original wording.