’Optical fibre’ made out of thin air – Air waveguides use differences in density to keep light beams focused

Scientists say they have turned thin air into an “optical fibre” that can transmit and amplify light signals without the need for any cables.

In a proof-of-principle experiment they created an “air waveguide” that could one day be used as an instantaneous optical fibre to any point on earth, or even into space.

The findings, reported in the journal Optica, have applications in long range laser communications, high-resolution topographic mapping, air pollution and climate change research, and could also be used by the military to make laser weapons.

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Collection of remote optical signals by air waveguides

> Scientists say they have turned thin air into an “optical fibre” that can transmit and amplify light signals without the need for any cables.

On the TV show “Bang Goes the Theory”, air was turned into a laser. The nitrogen in the air can be used to create an ultraviolet laser, once a sufficiently large electrical voltage is placed across it.

I think its awesome work

Right…that’s the NBN sorted then.

sibeen said:

Right…that’s the NBN sorted then.

MT could do with laser beam or two

sibeen said:

Right…that’s the NBN sorted then.

Huzzah!