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Primeur weekly 2012-01-02

The Cloud

Hong Kong's Quality HealthCare adopt IBM Cloud and Analytics ...

Improving security in the Cloud ...

EuroFlash

T-Platforms to build 10 PetaFlops supercomputer ...

Award-winning Maximum Performance Computing (MPC) powers trading systems at J.P. Morgan ...

USFlash

Bright Computing and China HPC Technologies power astronomical research at China's Purple Mountain Observatory ...

Bright Computing Selected for HPC cluster at Texas A&M University ...

40-year-old puzzle of superstring theory solved by supercomputer ...

Virginia Tech's Wu Feng unveils HokieSpeed, a new powerful supercomputer for the masses ...

Lawrence Livermore receives $1.75 million to integrate more renewable sources into California's energy grid ...

A new kind of metal in the deep Earth ...

Compact personal supercomputer provides powerful GPU computing in a small package ...

Tokyo Institute of Technology wins Gordon Bell Prize with NVIDIA GPU-accelerated supercomputer ...

New device could bring optical information processing ...

Asiana Airlines improves business efficiency with Oracle Exadata Database Machine ...

Digicel Haiti implements Oracle Exadata Database Machine to help meet business objectives ...

Iowa Network Services improves services uptime and reduces data centre operational costs with Oracle Solaris ...

BNP Paribas CIB speeds information processing with Oracle Exadata Database Machine ...

Quantum computing has applications in magnetic imaging, according to Pitt researchers ...

Better turbine simulation software to yield better engines ...

Optical fiber innovation could make future optical computers a SNAP ...

New device could bring optical information processing

22 Dec 2011 West Lafayette - Researchers have created a new type of optical device small enough to fit millions on a computer chip that could lead to faster, more powerful information processing and supercomputers. The "passive optical diode" is made from two tiny silicon rings measuring 10 microns in diameter, or about one-tenth the width of a human hair. Unlike other optical diodes, it does not require external assistance to transmit signals and can be readily integrated into computer chips.

The diode is capable of "non-reciprocal transmission", meaning it transmits signals in only one direction, making it capable of information processing, said Minghao Qi (pronounced Chee), an associate professor of electrical and computer engineering at Purdue University.

"This one-way transmission is the most fundamental part of a logic circuit, so our diodes open the door to optical information processing", stated Minghao Qi, working with a team also led by Andrew Weiner, Purdue's Scifres Family Distinguished Professor of Electrical and Computer Engineering.

The diodes are described in a paper published on-line on December 22, 2011 in the journalScience. The paper was written by graduate students Li Fan, Jian Wang, Leo Varghese, Hao Shen and Ben Niu, research associate Yi Xuan, and Andrew Weiner and Minghao Qi.

Although fiberoptic cables are instrumental in transmitting large quantities of data across oceans and continents, information processing is slowed and the data are susceptible to cyberattack when optical signals must be translated into electronic signals for use in computers, and vice versa.

"This translation requires expensive equipment", Jian Wang stated. "What you'd rather be able to do is plug the fiber directly into computers with no translation needed, and then you get a lot of bandwidth and security."

Electronic diodes constitute critical junctions in transistors and help enable integrated circuits to switch on and off and to process information. The new optical diodes are compatible with industry manufacturing processes for complementary metal-oxide-semiconductors, or CMOS, used to produce computer chips, Li Fan said.

"These diodes are very compact, and they have other attributes that make them attractive as a potential component for future photonic information processing chips", she stated.

The new optical diodes could make for faster and more secure information processing by eliminating the need for this translation. The devices, which are nearly ready for commercialization, also could lead to faster, more powerful supercomputers by using them to connect numerous processors together.

"The major factor limiting supercomputers today is the speed and bandwidth of communication between the individual superchips in the system", Leo Varghese stated. "Our optical diode may be a component in optical interconnect systems that could eliminate such a bottleneck."

Infrared light from a laser at telecommunication wavelength goes through an optical fiber and is guided by a microstructure called a waveguide. It then passes sequentially through two silicon rings and undergoes "non-linear interaction" while inside the tiny rings. Depending on which ring the light enters first, it will either pass in the forward direction or be dissipated in the backward direction, making for one-way transmission. The rings can be tuned by heating them using a "microheater", which changes the wavelengths at which they transmit, making it possible to handle a broad frequency range.

The work was performed in laboratories operated by the Birck Nanotechnology Center in Purdue's Discovery Park and by the School of Electrical and Computer Engineering. It was funded by the U.S. Defense Threat Reduction Agency, Air Force Office of Scientific Research, National Science Foundation and the National Institutes of Health. Simulation work was carried out through the Network for Computational Nanotechnology (NCN).
Source: Purdue University

Back to Table of contents

Primeur weekly 2012-01-02

The Cloud

Hong Kong's Quality HealthCare adopt IBM Cloud and Analytics ...

Improving security in the Cloud ...

EuroFlash

T-Platforms to build 10 PetaFlops supercomputer ...

Award-winning Maximum Performance Computing (MPC) powers trading systems at J.P. Morgan ...

USFlash

Bright Computing and China HPC Technologies power astronomical research at China's Purple Mountain Observatory ...

Bright Computing Selected for HPC cluster at Texas A&M University ...

40-year-old puzzle of superstring theory solved by supercomputer ...

Virginia Tech's Wu Feng unveils HokieSpeed, a new powerful supercomputer for the masses ...

Lawrence Livermore receives $1.75 million to integrate more renewable sources into California's energy grid ...

A new kind of metal in the deep Earth ...

Compact personal supercomputer provides powerful GPU computing in a small package ...

Tokyo Institute of Technology wins Gordon Bell Prize with NVIDIA GPU-accelerated supercomputer ...

New device could bring optical information processing ...

Asiana Airlines improves business efficiency with Oracle Exadata Database Machine ...

Digicel Haiti implements Oracle Exadata Database Machine to help meet business objectives ...

Iowa Network Services improves services uptime and reduces data centre operational costs with Oracle Solaris ...

BNP Paribas CIB speeds information processing with Oracle Exadata Database Machine ...

Quantum computing has applications in magnetic imaging, according to Pitt researchers ...

Better turbine simulation software to yield better engines ...

Optical fiber innovation could make future optical computers a SNAP ...