Featured Research

from universities, journals, and other organizations

Light Research Opens Door For Optical Storage And Computing

Date:
April 27, 2008
Source:
European Science Foundation
Summary:
The goal of replacing electronics with optics for processing data in computers is coming closer through cutting-edge European research into the mysterious properties of "fast and slow" light. The long-term aim is to boost processing speeds and data storage densities by several orders of magnitude and take the information technology industry into a new era, combining greatly improved performance with dramatically lower energy consumption.

The goal of replacing electronics with optics for processing data in computers is coming closer through cutting edge European research into the mysterious properties of "fast and slow" light. The long term aim is to boost processing speeds and data storage densities by several orders of magnitude and take the information technology industry into a new era, combining greatly improved performance with dramatically lower energy consumption.

The phenomenon of "fast and slow" light arises from the dispersion of electromagnetic waves when they interact with, and travel through, a physical medium such as a crystal. This can have the effect of slowing down the light pulses, or on occasions appearing to cause local acceleration. These speed variations have the potential for developing purely optical devices using just electromagnetic radiation, rather than electrical signals, to store and process information.

In the more immediate future, these properties will be used to enhance existing hybrid communication systems combining electronic and photonic (light-based) devices. But first more fundamental research is needed, and the current state of play along with a roadmap for future projects was discussed at a recent workshop organised by the European Science Foundation (ESF).

The project achieved its main objectives of reviewing the state of the art, highlighting possible applications, and gathering a dispersed European community of scientists, according to the workshop's convenor Marco Santagiustina. "There were two remarkable highlights: slow and fast light research has immense potential in applications like microwave and millimeter wave photonics, and secondly such applications can be targeted by making progress in a selected set of technologies," said Santagiustina.

Light signals are already used for communication over fibre optic cables, but cannot yet be stored directly, or used for computation. This would require slowing down the light signals so that they can be buffered within a small area, and can be achieved by exploiting "fast and slow" light effects. Before the arrival of true photonic computing, there is the more immediate prospect of building optical interconnects for example in communication networks, which would reduce latency, the time taken for signals to travel from source to destination. Latency imposed by the communications network has become a significant problem in an age of globalisation where computers in different continents are cooperating in tasks that need to be executed very quickly in fractions of a second.

Another more immediate application of "fast and slow" light is likely to come from the ability in processing ultrawide band microwave signals, for radio communications, both for mobile telephony and wireless LANs. "Fast and slow" light can be harnessed to transmit radio frequencies directly over fibre, making it easier, cheaper, and more efficient to connect up base stations or wireless access points. "Radio over fiber is an existing application field destined to grow in the near future," said Santagiustina. "This field will also represent a significant step forward for the photonic/electronic convergence. In that area the time-delay/phase-shift provided by slow and fast light devices can yield unprecedented functions."

Some of these functions have not yet been conceived, but the fundamental point is that converging photonics with electronics reduces delays and increases the bandwidth available, cutting costs and boosting communications capacity.

The workshop "Slow and Fast Light: Fundamental Issues and Applications" was held in Venice, Italy, in October 2007. Each year, ESF supports approximately 50 Exploratory Workshops across all scientific domains.


Story Source:

The above story is based on materials provided by European Science Foundation. Note: Materials may be edited for content and length.


Cite This Page:

European Science Foundation. "Light Research Opens Door For Optical Storage And Computing." ScienceDaily. ScienceDaily, 27 April 2008. <www.sciencedaily.com/releases/2008/04/080424103646.htm>.
European Science Foundation. (2008, April 27). Light Research Opens Door For Optical Storage And Computing. ScienceDaily. Retrieved August 1, 2014 from www.sciencedaily.com/releases/2008/04/080424103646.htm
European Science Foundation. "Light Research Opens Door For Optical Storage And Computing." ScienceDaily. www.sciencedaily.com/releases/2008/04/080424103646.htm (accessed August 1, 2014).

Share This




More Matter & Energy News

Friday, August 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Tesla, Panasonic Ink Deal To Make Huge Battery 'Gigafactory'

Tesla, Panasonic Ink Deal To Make Huge Battery 'Gigafactory'

Newsy (July 31, 2014) The deal will help build a massive battery factory that Tesla says will produce 500,000 lithium batteries by 2020. Video provided by Newsy
Powered by NewsLook.com
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
7 Ways to Use Toothpaste: Howdini Hacks

7 Ways to Use Toothpaste: Howdini Hacks

Howdini (July 30, 2014) Fresh breath and clean teeth are great, but have you ever thought, "my toothpaste could be doing more". Well, it can! Lots of things! Howdini has 7 new uses for this household staple. Video provided by Howdini
Powered by NewsLook.com
Smoked: 2015 Ducati Diavel Vs 2014 Chevy Corvette Stingray Drag Race

Smoked: 2015 Ducati Diavel Vs 2014 Chevy Corvette Stingray Drag Race

Cycle World (July 30, 2014) The Bonnier Motorcycle Group presents Smoked; a three part video series. In this episode the 2015 Ducati Diavel takes on the 2014 Chevy Corvette Stingray Video provided by Cycle World
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