Featured Research

from universities, journals, and other organizations

Light Sheds On New Fiber's Potential To Change Technology

Date:
December 13, 2007
Source:
University of Bath
Summary:
Photonic crystal fiber's ability to create broad spectra of light, which will be the basis for important developments in technology, has been explained for the first time. The fiber can change a pulse of light with a narrow range of wavelengths into a spectrum hundreds of times broader and ranging from visible light to the infra-red. This is called a supercontinuum.

Dr Dmitry Skryabin (left) and Dr Andrey Gorbach.
Credit: Image courtesy of University of Bath

Photonic crystal fibre’s ability to create broad spectra of light, which will be the basis for important developments in technology, has been explained for the first time in an article in the journal Nature-Photonics.

The fibre can change a pulse of light with a narrow range of wavelengths into a spectrum hundreds of times broader and ranging from visible light to the infra-red. This is called a supercontinuum.

This supercontinuum is one of the most exciting areas of applied physics today and the ability to create it easily will have a significant effect on technology.

This includes telecommunications, where optical systems hundreds of times more efficient than existing types will be created because signals can be transmitted and processed at many wavelengths simultaneously.

Supercontinua generated in photonic crystal fibres also help to create optical clocks which are so accurate that they lose or gain only a second every million years. Two physicists based in the US and Germany shared the Nobel Prize for Physics in 2005 for work in this area.

Despite these applications, the mechanism behind supercontinuum generation has remained unclear, which has stopped physicists from being even more precise in using it.

But researchers at the University of Bath have now discovered the reason for much of the broadening of the spectrum.

Dr Dmitry Skryabin and Dr Andrey Gorbach, of the Centre for Photonics and Photonic Materials in the Department of Physics, found that the generation of light across the entire visible spectrum was caused by an interaction between conventional pulse of lights and what are called solitons, special light waves that maintain their shape as they travel down the fibre.

The researchers found that the pulses of light sent down the fibre get struck behind the solitons as both pass down the fibre, because the solitons slow down as they move. This barrier caused by the solitons forces the light pulses to shorten their wavelength and so become bluer, just as the solitons’ wavelength lengthens, becoming redder. This dual effect creates the broadened spectrum.

“One of the most startling effects of the photonic crystal fibre is its ability to create a strong bright spectrum of visible and infra red light from a very brief pulse of light,” said Dr Skryabin.

“We have never fully understood exactly why this happens until our research showed how the pulse of light is slowed down and blocked by other activity in the fibre, forcing it to shorten its wavelength.

“Until now the creation and manipulation of the supercontinua in photonic crystal fibres have been done in an ad-hoc way without knowing exactly why different effects are observed. But now we should be able to be much more precise when using it.”

Dr Skryabin believes that the interaction between light pulses and solitons has similarities with the way gravity acts on objects.


Story Source:

The above story is based on materials provided by University of Bath. Note: Materials may be edited for content and length.


Cite This Page:

University of Bath. "Light Sheds On New Fiber's Potential To Change Technology." ScienceDaily. ScienceDaily, 13 December 2007. <www.sciencedaily.com/releases/2007/12/071210104013.htm>.
University of Bath. (2007, December 13). Light Sheds On New Fiber's Potential To Change Technology. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2007/12/071210104013.htm
University of Bath. "Light Sheds On New Fiber's Potential To Change Technology." ScienceDaily. www.sciencedaily.com/releases/2007/12/071210104013.htm (accessed July 30, 2014).

Share This




More Matter & Energy News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Britain Testing Driverless Cars on Roadways

Britain Testing Driverless Cars on Roadways

AP (July 30, 2014) British officials said on Wednesday that driverless cars will be tested on roads in as many as three cities in a trial program set to begin in January. Officials said the tests will last up to three years. (July 30) Video provided by AP
Powered by NewsLook.com
China's Drone King Says the Revolution Depends on Regulators

China's Drone King Says the Revolution Depends on Regulators

Reuters - Business Video Online (July 30, 2014) Comparing his current crop of drones to early personal computers, DJI founder Frank Wang says the industry is poised for a growth surge - assuming regulators in more markets clear it for takeoff. Jon Gordon reports. Video provided by Reuters
Powered by NewsLook.com
3Doodler Bring 3-D Printing to Your Hand

3Doodler Bring 3-D Printing to Your Hand

AP (July 30, 2014) 3-D printing is a cool technology, but it's not exactly a hands-on way to make things. Enter the 3Doodler: the pen that turns you into the 3-D printer. AP technology writer Peter Svensson takes a closer look. (July 30) Video provided by AP
Powered by NewsLook.com
Climate Change Could Cost Billions, According To White House

Climate Change Could Cost Billions, According To White House

Newsy (July 29, 2014) A report from the White House warns not curbing greenhouse gas emissions could cost the U.S. billions. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



      Save/Print:
      Share:

      Free Subscriptions


      Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

      Get Social & Mobile


      Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

      Have Feedback?


      Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
      Mobile: iPhone Android Web
      Follow: Facebook Twitter Google+
      Subscribe: RSS Feeds Email Newsletters
      Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins