Scientists have solved the problem that has plagued them for years – ITavisen.no

Important breakthroughs for optical fiber.

Tuesday, 30 June 2015 – 8:03

Researchers at the University of California at San Diego has managed to burst limit to how far information transmitted in fiber cables, without it being destroyed or lost on the road. The distance they managed to achieve was 12,000 km.

20 times the signal strength
In practice, this can lead to faster and more stable internet with longer fiber cables – the printer university itself in a press release.

They managed to blow up the border by increasing the maximum intensity of the optical signal by almost 20 times compared to baseline. This made it possible to transmit the signal much farther than before.

The results are published in the heavy journal Science.

– As quicksand
The whole thing is important because just this has been a problem for optical fiber in a long time: The greater the speed becomes, the greater the chance that information not emerged unscathed from the receiver.

Researchers sammenigner it with quicksand.

“With quicksand is it that the more you argue, the faster you sink. So it is with optical fiber. The more power you give the signal, the more interference you get. In practice, this prevents transmission over longer distances. Our approach removes this limit, which extends the distance of how far the signal can travel in optical fiber without the need for a repeater (regenerator), “ explain the researchers.

Predicts interference
So called regenerators are electronic gadgets which amplifies the signal. These are expensive. That they are not needed with the new method enables therefore cheaper infrastructures.

The breakthrough comes from something called “frequency combs” which makes it possible to predict signal degradation on the road. Using this information, the data can be restored to their original condition.

It takes enough for a while before the technology being used, but this shows that talented scientists and engineers are constantly seeking new solutions to existing problems.

Source:
Engadget / Press Release