Study: Light Beam "Twins" Hold Key to Better Signals
May 27, 2013 10:12 PM
By mirroring beam in line, noise is cancelled
It is an elegant and simple solution, but one that is relatively new to the world of fiber optic signaling -- beam mirroring. The approach, already frequently used in the noise-cancelling headphones, is being touted as a promising new route to improving fiber optic routing in a new study by researchers at telecommunications company Alcatel-Lucent SA's (
) Bell Labs unit.
The idea involves making "twins" -- dual beams of light in a fiber that mirror each other. Each peak in one beam is a trough in its twin. Together they bounce along the line, much as a single beam would.
One major limiting factor in fiber optics is noise. In order to send signals farther, beams are transmitted at higher power. But the higher the power, the more beams tend to interact with the material in the fiber's walls, adding noise. Beams have a limiting maximum distance they can travel and maintain fidelity -- after that they need to be received and rerouted, hopping along the next link.
By adopting the "twin" approach, light can travel four times farther that a single beam could. In their study, the Bell Labs stream piped data at 400 Gigabits per second (Gbps) -- four times faster than the best commercially available speeds, down 12,800 kilometers (7953 miles) of fiber. That's a longer line than the longest
While note the first study to suggest the phase conjugate approach, Bell Labs claims its work offers the most straightforward implementation and is proven to travel farther without rerouting. That means
the need to reroute or boost signals
during long transoceanic links may no longer be needed.
[Image Source: Guardian UK]
Lead author Xiang Liu of Bell Laboratories in New Jersey
in an interview with
Sometimes you may send data from London to New York, sometimes you may send it from London to Paris. The links are changing and you cannot keep sending people to the middle of the link.
At the receiver, if you superimpose the two waves, then all the distortions will magically cancel each other out, so you obtain the original signal back. This concept, looking back, is quite easy to understand, but surprisingly, nobody did this before.
Nowadays everybody is consuming more and more bandwidth - demanding more and more communication. We need to solve some of the fundamental problems to sustain the capacity growth.
The approach may allow
faster data transfer speeds
too. As it reduces signal noise, it allows for less repetition of information in a given beam.
The study on the work
in the prestigious peer-reviewed journal
Alcatel-Lucent in currently
in the midst of constructing
a 100 Gbps undersea fiber link between Malaysia, India, and the Middle East.
“We do believe we have a moral responsibility to keep porn off the iPhone.” -- Steve Jobs
T-Mobile's German Parent Unveils World's Fast Fiber Signal -- 512 Gbps
March 6, 2012, 10:29 AM
Laser Amplified Fiber Broadband May Close Digital Divide
March 18, 2009, 9:19 AM
Google Buys Part of Undersea Fiber Optic Cable
February 26, 2008, 2:01 PM
Science & Environment
February 20, 2017, 6:37 AM
The USA’s newest weather satellite sends first photos.
January 24, 2017, 6:41 AM
Netflix took a decision to invest in original content
January 19, 2017, 7:00 AM
Amazon Airborne Fulfillment Center – Your Merchandise Drop-Shipped from the Clouds
December 29, 2016, 5:00 AM
Amazon is experimenting with a new kind of grocery stores, Amazon Go
December 8, 2016, 5:00 AM
Google has developed Deep Learning Algorithm to detect Diabetic Eye Disease
December 4, 2016, 5:00 AM
Most Popular Articles
Surface Pro 5 Rumors - New Release Date and Price
April 22, 2017, 6:45 AM
Vivo V5 Plus – the Selfie Softlight is on You.
April 17, 2017, 7:05 AM
What is the Apple’s iPhone 8 specifications and release date?
April 14, 2017, 5:43 AM
Meet the Smartphone with four cameras - Alcatel Flashphone
April 5, 2017, 11:20 AM
ASUS RT-AC5300 – Ultimate Game & 4K Streaming
April 18, 2017, 7:45 AM
Latest Blog Posts
Sound Bars and the Costs?
Apr 23, 2017, 6:30 AM
Link your Brain to Your Computer – In Four Years…Maybe
Apr 22, 2017, 7:03 AM
Google Home can now identify users by their voice.
Apr 21, 2017, 7:15 AM
Amazon Lex – Now Available for Developers.
Apr 20, 2017, 6:58 AM
You can now use Instagram offline on your Android Smartphone
Apr 19, 2017, 8:00 AM
Now you can livestream to YouTube from your mobile device.
Apr 18, 2017, 8:05 AM
Google Home – Is It a Spy Device?
Apr 17, 2017, 7:30 AM
Apple added to self –driving test permit list
Apr 15, 2017, 6:21 AM
Project Scorpio – Coming on June 11
Apr 14, 2017, 6:20 AM
Looks Like Samsung Has Been Forgiven.
Apr 13, 2017, 6:50 AM
United Airlines - Blasted on China’s Social Network and the Stock Market
Apr 12, 2017, 6:50 AM
Amazon's Third-Party Sellers Hacked
Apr 11, 2017, 6:25 AM
Microsoft Surface Pro5 Details Revealed
Apr 9, 2017, 6:41 AM
Own An Android Phone? Then you could be hacked over Wi-FI
Apr 7, 2017, 6:47 AM
Apple confirms iOS 10.3 bug and its effect on iCloud Services
Apr 6, 2017, 6:30 AM
Apple Rolls Out New Version of Apple Music
Apr 5, 2017, 10:35 AM
Apple in the News
Apr 4, 2017, 9:03 AM
Apple iPhones Will Soon Feature Graphics Chips Designed BY Apple
Apr 3, 2017, 6:23 AM
AMD Ryzen Desktop Processors Performance
Apr 2, 2017, 6:30 AM
What makes a camera Lensless?
Apr 1, 2017, 7:45 AM
Google halts Android Wear 2.0 Update Due to Bug
Mar 31, 2017, 7:27 AM
Uber Technologies Inc Driverless Car hit by Human-driver
Mar 30, 2017, 8:00 AM
More Blog Posts
Copyright 2017 DailyTech LLC. -
Terms, Conditions & Privacy Information