Laser Links Give Aging Supercomputers a Second Wind – IEEE Spectrum

http://spectrum.ieee.org/computing/hardware/laser-links-give-aging-supercomputers-a-second-wind

Free space optics!

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1 Comment

  1. Tomi Engdahl says:

    Gigabit Ethernet Through the Air
    http://hackaday.com/2016/03/10/gigabit-ethernet-through-the-air/

    There are a couple of really great things about transmitting data using light as the carrier. It can be focused so that it doesn’t spill all over the neighborhood like radio signals do — giving it both some security against eavesdropping and preventing one signal from stepping on another’s toes. And while you can modulate radio signals up nearly to the carrier frequency, the few gigahertz we normally use for radio just won’t cut it for really high bit rates. Light gets you terahertz.

    The Koruza project is an open-source, “inexpensive” system that aims to transmit 1 Gb/sec over distances around 100 meters, using modulated infrared light.

    1Gbps networking connectivity for locations up to 100m apart, using an eye-safe infrared light beam.
    http://koruza.net/index.html

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