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.

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 July 26, 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 July 26, 2014).

Share This




More Matter & Energy News

Saturday, July 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
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