Featured Research

from universities, journals, and other organizations

Major step towards low-power all-optical switching for optical communications

Date:
January 29, 2010
Source:
Interuniversity Microelectronics Centre (IMEC)
Summary:
Researchers have developed an ultra-small and fast electrically pumped all-optical memory on a silicon chip with record low power consumption. This result paves the way for optical packet switching with drastically reduced overall power consumption in high-speed, high-data rate optical telecommunication systems.

Researchers have developed an ultra-small and fast electrically pumped all-optical memory on a silicon chip with record low power consumption. This result, published in the January 2010 issue of the journal Nature Photonics, achieved by IMEC and its associated laboratory INTEC at the Ghent University, paves the way for optical packet switching with drastically reduced overall power consumption in high-speed, high-data rate optical telecommunication systems.

Related Articles


Fiber-optic communication systems have revolutionized the telecommunications industry and play a crucial role in today's information age where long-distance and high-data rate communication is indispensable. While the transportation of the data bits between different points in such networks normally makes use of light pulses, it is quite a different story for the switching and routing of the data at the network nodes. Due to the absence of good optical random access memories, up to now, the data needed to be converted from the optical to the electrical domain and electronic switches with microelectronic processors were needed. However, with the ever increasing amount of data the power consumption of such optoelectronic switches increases dramatically.

Researchers from IMEC and Ghent University in Belgium realized extremely fast and small optical random access memories with record low power consumption. This discovery paves the way to do the switching in optical fiber networks or optical interconnect systems completely optically and to no longer rely on optoelectronic conversions.

The optical random access memory has been achieved with ultra-compact micro-disk lasers with a diameter of 7.5m. The laser light can either propagate in the clockwise or counter clockwise direction and one can switch between these two laser modes using short optical pulses. The lasers, implemented themselves in Indium Phosphide membranes, are heterogeneously integrated onto passive silicon waveguide circuits. This allows to optically interconnect different memory cells using silicon wires. It also allows to use the strongly developed silicon-based microelectronics fabrication technology, making it a cost-effective solution.

These results were achieved in collaboration with TU Eindhoven and INL (Institute for Nanotechnology in Lyon) in the framework of the European FP7 projects HISTORIC and WADIMOS coordinated by IMEC-INTEC.


Story Source:

The above story is based on materials provided by Interuniversity Microelectronics Centre (IMEC). Note: Materials may be edited for content and length.


Cite This Page:

Interuniversity Microelectronics Centre (IMEC). "Major step towards low-power all-optical switching for optical communications." ScienceDaily. ScienceDaily, 29 January 2010. <www.sciencedaily.com/releases/2010/01/100125150643.htm>.
Interuniversity Microelectronics Centre (IMEC). (2010, January 29). Major step towards low-power all-optical switching for optical communications. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2010/01/100125150643.htm
Interuniversity Microelectronics Centre (IMEC). "Major step towards low-power all-optical switching for optical communications." ScienceDaily. www.sciencedaily.com/releases/2010/01/100125150643.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
3D Printed Cookies Just in Time for Christmas

3D Printed Cookies Just in Time for Christmas

Reuters - Innovations Video Online (Dec. 18, 2014) A tech company in Spain have combined technology with cuisine to develop the 'Foodini', a 3D printer designed to print the perfect cookie for Santa. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
First Etihad Superjumbo Flight in December

First Etihad Superjumbo Flight in December

AFP (Dec. 18, 2014) The first flight of Etihad Airways' long-awaited Airbus A380 superjumbo will take place later in December, the Abu Dhabi carrier said Thursday, also announcing its first Boeing 787 Dreamliner route. Duration: 01:09 Video provided by AFP
Powered by NewsLook.com
Ford Expands Air Bag Recall Nationwide

Ford Expands Air Bag Recall Nationwide

Newsy (Dec. 18, 2014) The automaker added 447,000 vehicles to its recall list, bringing the total to more than 502,000. 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:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

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