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Thread: Twisted Light -- 66 DVD's per second transfer rate

  1. #1
    It's all about the Light!
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    Twisted Light -- 66 DVD's per second transfer rate

    Researchers have clocked light beams made of "twisted" waves carrying 2.5 terabits of data - the capacity of more than 66 DVDs - per second.

    The technique relies on manipulating what is known as the orbital angular momentum of the waves.

    Recent work suggests that the trick could vastly boost the data-carrying capacity in wi-fi and optical fibres.

    The striking demonstration of the approach, reported in Nature Photonics, is likely to lead to even higher rates.

    Angular momentum is a slippery concept when applied to light, but an analogy closer to home is the Earth itself.

    American and Israeli researchers have used twisted, vortex beams to transmit data at 2.5 terabits per second. As far as we can discern, this is the fastest wireless network ever created — by some margin. This technique is likely to be used in the next few years to vastly increase the throughput of both wireless and fiber-optic networks.

    These twisted signals use orbital angular momentum (OAM) to cram much more data into a single stream. In current state-of-the-art transmission protocols (WiFi, LTE, COFDM), we only modulate the spin angular momentum (SAM) of radio waves, not the OAM. If you picture the Earth, SAM is our planet spinning on its axis, while OAM is our movement around the Sun. Basically, the breakthrough here is that researchers have created a wireless network protocol that uses both OAM and SAM.
    Now to hook AP up to that sort of network interface
    regards, Kym Gallery Honest & Direct Constructive Critique Appreciated! ©
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  2. #2
    A royal pain in the bum! arthurking83's Avatar
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    Quote Originally Posted by Kym View Post

    Now to hook AP up to that sort of network interface
    Crikey! .. I'd be happy with only 2Tb/s transfer rates
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