Terabit Internet

If you want ultra-fast wireless internet, just get light to do the twist.

The wireless and fibre-optic links that make up the internet use electromagnetic waves to carry data as a series of pulses at a specific frequency. It is possible to increase the amount of data transmitted at a given frequency by twisting light beams in different ways. Each beam has a different angular momentum and acts as an independent channel in a larger, composite, beam.

Now Jian Wang, Alan Willner and colleagues at the University of Southern California in Los Angeles have used the twisting technique to transmit over a terabit of data per second. By comparison home WiFi routers typically run at around 50 megabits per second.

Because there are many ways to twist light, the team was able to combine beams with eight different types of twist, each carrying its own independent sequence of pulses.

Willner says the technique could be used between satellites in space, or over shorter distances on Earth. “It’s another dimension by which you can transmit data.”

Right now, it works only in free-space as current fibre-optic technology distorts twisted light.

Attribution: New Scientist

Advertisements

About thecommonconstitutionalist

Brent is not a scholar. He’s not an author or speaker (yet). He hasn’t published a book nor does he write articles for magazines (yet). He has no advanced literary degree or pedigree (never will). He is just an American who writes and shares what interests him. He cares about the salvation of this country and a return to its Constitutional roots. He believes in God, country and family.
This entry was posted in Current Events, Fun Stuff, Science & Technology and tagged , , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s