Initially, I saw MIT's news announcing 100 times faster with less energy consumption, and dismissed the news.
An Internet 100 times as fast
A new network design that avoids the need to convert optical signals into electrical ones could boost capacity while reducing power consumption.
Larry Hardesty, MIT News Office
In today’s Internet, data traveling through optical fibers as beams of light have to be converted to electrical signals for processing. By dispensing with that conversion, a new network design could increase Internet speeds 100-fold.
June 28, 2010
The heart of the Internet is a network of high-capacity optical fibers that spans continents. But while optical signals transmit information much more efficiently than electrical signals, they’re harder to control. The routers that direct traffic on the Internet typically convert optical signals to electrical ones for processing, then convert them back for transmission, a process that consumes time and energy.
In recent years, however, a group of MIT researchers led by Vincent Chan, the Joan and Irwin Jacobs Professor of Electrical Engineering and Computer Science, has demonstrated a new way of organizing optical networks that, in most cases, would eliminate this inefficient conversion process. As a result, it could make the Internet 100 or even 1,000 times faster while actually reducing the amount of energy it consumes.
But, then here comes news from European Commission on Optical switching and green photonics.
C-3PO Strives for Green Photonics
JULY 8, 2010 | Craig Matsumoto | Post a comment
A European Commission-funded project is giving the optical components sector some green street cred by aiming to squeeze the power requirements for certain types of photonic devices.
The three-year project is being called Colorless and Coolerless Components for Low-Power Optical Networks, which participants are shortening to C-3PO.
Yes, sci-fi geeks, they named it after a breakfast cereal.
ADVA Optical Networking (Frankfurt: ADV) is announcing its involvement today, but C-3PO got introduced to the world a couple of weeks ago.
The author tries to tie in why energy efficient networks are important and the relationship with virtualization.
Photonics are not the biggest power suck in the network. But C-3PO participants reason thatevery piece of the network will eventually need a green checkup. "Every single layer in the complete network has to be considered, and that means network architectures, maybe even application architectures, systems, components, and safe or sleep modes. Optics can't be excluded," Grobe says.
The data center, as a whole, is a more obvious power hog, but Grobe points out that this problem is being addressed by virtualization, a process that lets users tap servers and storage that are widely distributed. Virtualization is made possible by high-speed optical networks. Thus, low-power optics will have some role in defining data-center power usage.
The value of this should not be under estimated. At present servers and storage device vendors are continually searching for ways to enhance performance, but when the data leaves the data centre for the end user target location, such as a PC on the internet, another application in a data centre, an ATM or other device etc the network will begin to limit the benefits of such performance.
This is known as latency and it already affects data centre placement for organisations whose profitibility can be impacted by poor response time. Such organisations generally place their data processing next totheir workforce to reduce the effect of latency, but the removal of network delays may become significant to such operators enabling them to relocate their data centres to more energy efficient regions of the globe.
However, network infrastructure will not be changed overnight and so these benefits may be some way off. By then the current round of virtualisation of the data centre will be over and new opportunities for greening and improved performance will be needed.
Posted by: Philip Vandenberg | Jul 09, 2010 at 11:58 AM