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Primeur weekly 2014-02-24

Special

H2020: the long road to an integrated open and accessible European e-Infrastructure ...

PRACE, HPC applications and technological development: three ingredients for a top European strategy ...

Yannick Legré is the new director of EGI.eu ...

The Cloud

Red Hat Enteprise Linux OpenStack Platform leveraged by Alcatel-Lucent, CloudBand as part of its Network Functions Virtualization (NFV) Platform ...

AT&T and IBM join forces to deliver new innovations for the Internet of Things ...

Mellanox introduces CloudX Platform to enable companies to build the most efficient public, private and hybrid Clouds ...

EuroFlash

Powerful supercomputer to offer a glimpse of the early universe ...

From a distance: New technique for repair work ...

ECRIN-ERIC to host inauguration ceremony ...

Karlsruhe Institute of Technology to develop ultra-small and ultra–fast electro-optic modulator ...

SURFsara to host Data & Computing Infrastructure Event on 12-13 March 2014 ...

USFlash

SDSC team develops multi-scale simulation software for chemistry research ...

SDSC/UC San Diego researchers hone in on Alzheimer's disease ...

Intel advances next phase of Big Data intelligence: real time analytics ...

Supercomputer dramatically accelerates rapid genome analysis ...

Using computers to speed up drug discovery ...

Better cache management could improve chip performance and cut energy use ...

A step closer to a photonic future ...

HP delivers record-breaking performance and dramatic efficiencies with HP ProLiant servers ...

Researchers propose a better way to make sense of 'Big Data' ...

Mega-bucks from Russia seed development of 'Big Data' tools ...

A new laser for a faster Internet ...

C-DAC to organize Accelerating Biology 2014: Computing Life ...

NetApp introduces unified scale-out storage systems and virtualization software for the unbound Cloud era ...

Supermicro shipping 96 DIMM 4U 4-Way SuperServer featuring new Intel Xeon processor E7-8800/4800 v2 ...

A step closer to a photonic future


Mark Wade
19 Feb 2014 Washington - The future of computing may lie not in electrons, but in photons - that is, in microprocessors that use light instead of electrical signals. But these so-called photonic devices are typically built using customized methods that make them difficult and expensive to manufacture.

Now, engineers have demonstrated that low power photonic devices can be fabricated using standard chip-making processes. They have achieved what the researchers dub a major milestone in photonic technology. The work will be presented at this year's OFC Conference and Exposition, being held March 9-13 in San Francisco.

The two new devices - a modulator and a tunable filter - are as energy-efficient as some of the best devices around, the researchers say, and were built using a standard IBM advanced Complementary Metal-Oxide Semiconductor (CMOS) process - the same chip-making process used to build many commercially available chips, some of which are found in Sony's Playstation 3 and also in Watson, the supercomputer that won Jeopardy! in 2011.

"As far as we know, we're the first ones to get silicon photonics natively integrated into an advanced CMOS process and to achieve energy efficiencies that are very competitive with electronics", stated Mark Wade of the University of Colorado, Boulder, who will present his team's work at OFC. Mark Wade's co-authors include researchers from the Massachusetts Institute of Technology and the University of California, Berkeley.

Moore's Law says that the number of transistors that can fit on a chip doubles every two years, resulting in the exponential rise in computing power we have seen over the last few decades. But even as transistors continue to shrink, Moore's Law may be reaching its limits, due to the fact that the devices are requiring more power to run, which leads to overheating.

Such thirst for power is especially problematic for the communication link between a computer's central processing unit and its memory.

"It's gotten to the point where it takes too much energy and that limits your computational power", Mark Wade stated.

A solution to this problem may lie in photonics, which researchers anticipate will be at least 10 times more energy efficient than electronics. Chip-to-chip communication links using these photonic devices could have at least 10 times higher bandwidth density, meaning they can transmit much more information using a smaller amount of space. That's because different optical signals can share the same optical wire, whereas sending multiple electrical signals either requires multiple electronic wires or schemes that require more chip space and energy.

But so far, Mark Wade explained, photonic devices used in chip-to-chip communication have been primarily custom-built using specialized methods, limiting their commercial applicability. And devices that have been created with more standardized techniques rely on older technology, which limits their ability to compete with cutting-edge electronics.

The ability to produce high-performing photonic devices using the CMOS process means chip designers will not have to be specialists to design photonic devices, Mark Wade explained, which will hopefully accelerate the commercialization of photonic technology.

"IBM's CMOS process has already been commercially proven to make high-quality microelectronics products", Mark Wade stated.

The two devices built by the researchers are key components for the communication link between a computer's central processing unit and its memory. A modulator converts electrical signals into optical signals. A tunable filter can pick out light signals of particular frequencies, allowing it to select a signal from multiple frequencies, each of which carries data. Used in conjunction with a photodetector, the filter converts optical signals to electrical signals.

But according to Mark Wade, the significance of this advancement goes beyond this particular application.

"This is a really nice first step for silicon photonics to take over some areas of technology where electronics has really dominated and to start building complex electronic/photonic systems that require dense integration", Mark Wade stated.

The work was part of the U.S. Defense Advanced Research Projects Agency's Photonically Optimized Embedded Microprocessors (POEM) project.

Presentation Tu2E.7, titled "Energy-efficient active photonics in a zero-change, state-of-the-art CMOS process", will take place Tuesday, March 11 at 3:30 p.m. in room 123 of the Moscone Center.
Source: The Optical Society

Back to Table of contents

Primeur weekly 2014-02-24

Special

H2020: the long road to an integrated open and accessible European e-Infrastructure ...

PRACE, HPC applications and technological development: three ingredients for a top European strategy ...

Yannick Legré is the new director of EGI.eu ...

The Cloud

Red Hat Enteprise Linux OpenStack Platform leveraged by Alcatel-Lucent, CloudBand as part of its Network Functions Virtualization (NFV) Platform ...

AT&T and IBM join forces to deliver new innovations for the Internet of Things ...

Mellanox introduces CloudX Platform to enable companies to build the most efficient public, private and hybrid Clouds ...

EuroFlash

Powerful supercomputer to offer a glimpse of the early universe ...

From a distance: New technique for repair work ...

ECRIN-ERIC to host inauguration ceremony ...

Karlsruhe Institute of Technology to develop ultra-small and ultra–fast electro-optic modulator ...

SURFsara to host Data & Computing Infrastructure Event on 12-13 March 2014 ...

USFlash

SDSC team develops multi-scale simulation software for chemistry research ...

SDSC/UC San Diego researchers hone in on Alzheimer's disease ...

Intel advances next phase of Big Data intelligence: real time analytics ...

Supercomputer dramatically accelerates rapid genome analysis ...

Using computers to speed up drug discovery ...

Better cache management could improve chip performance and cut energy use ...

A step closer to a photonic future ...

HP delivers record-breaking performance and dramatic efficiencies with HP ProLiant servers ...

Researchers propose a better way to make sense of 'Big Data' ...

Mega-bucks from Russia seed development of 'Big Data' tools ...

A new laser for a faster Internet ...

C-DAC to organize Accelerating Biology 2014: Computing Life ...

NetApp introduces unified scale-out storage systems and virtualization software for the unbound Cloud era ...

Supermicro shipping 96 DIMM 4U 4-Way SuperServer featuring new Intel Xeon processor E7-8800/4800 v2 ...