nanophotonics
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First light-based memory chip puts SSDs on notice
Researchers have created the first optical-only chip that can permanently store data, a discovery that could lead to storage devices that leave SSDs in the dust. Non-volatile flash memory currently relies on electronic chips, which are speed-limited by the heat and resistance generated by colliding electrons. Light-based circuits don't have that problem, but so far "nano-photonic" chips created by the likes of IBM are volatile (need to be powered), making them a non-option for permanent storage. The team from Oxford and the Karlsruhe Institute of Technology in Germany managed to solve that problem using a familiar light-based storage medium: DVDs.
IBM manufactures light-based 'nanophotonic' chips to let the terabytes flow
IBM's taken a large step toward computer chips that use photons instead of electrons by manufacturing the first 90nm silicon-based optical processing modules. It did so using the CMOS nanophotonics technology we first saw back in 2010, creating tranceivers capable of 25Gbps transfer speeds. By multiplexing a large number of those streams to a single fibre, "terrabytes of data" per second could flow between distant computer systems," according to IBM. The 90 nanometer light circuits should allow data-hungry servers or supercomputers to scale up rapidly in speed "for the next decade, and at the desired low cost," according to the researchers. It's now primed for commercial development, meaning we could see an end to bottlenecks in systems "a few centimeters or a few kilometers" apart from each other. Check the PR for the detailed technical skinny.
IBM: 'We must build an Exascale computer before 2024' (video)
ASTRON has enlisted the help of IBM to lead a five-year, $43 million project to develop and build a supercomputer for the new Square Kilometer Array. The SKA is a $2.1 billion initiative to construct the world's largest radio telescope across a 3,000km strip of Australia or South Africa. It's hoped to be around 50 times as powerful as the dishes we currently point heavenward and will be used to examine the deepest reaches of space to learn more about the formation of the universe. When it goes live in 2024, it'll produce an Exabyte of data each day: twice as much information as there is traffic on the internet in the same period. Of course, no existing computer could handle the job, so Big Blue has a slim 12 years in which to turn nascent technologies like Nanophotonics, 3D chip stacking and phase change memory amongst others into a practical, workable Exascale computer. Its either that, or somehow daisy-chain 100 million PCs with enough power and cooling fans to keep it all working and hope for the best. If you'd like to know more, then head on past the break, although unfortunately it won't count as college credit.
IBM breakthrough brings us one step closer to exascale computing, even more intense chess opponents
The path to exascale computing is a long and windy one, and it's dangerously close to slipping into our shunned bucket of "awesome things that'll never happen." But we'll hand it to IBM -- those guys and gals are working to create a smarter planet, and against our better judgment, we actually think they're onto something here. Scientists at the outfit recently revealed "a new chip technology that integrates electrical and optical devices on the same piece of silicon, enabling computer chips to communicate using pulses of light (instead of electrical signals), resulting in smaller, faster and more power-efficient chips than is possible with conventional technologies." The new tech is labeled CMOS Integrated Silicon Nanophotonics, and if executed properly, it could lead to exaflop-level computing, or computers that could handle one million trillion calculations per second. In other words, your average exascale computer would operate around one thousand times faster than the fastest machine today, and would almost certainly give Garry Kasparov all he could stand. When asked to comment on the advancement, Dr. Yurii A. Vlasov, Manager of the Silicon Nanophotonics Department at IBM Research, nodded and uttered the following quip: "I'm am IBMer, and exascale tomfoolery is what I'm working on."* *Not really, but you believed it, didn't you?
World's smallest laser cracks open the door to THz CPU race
So you thought 100nm was about as narrow as lasers could get, huh? Well think again brother, because scientists at Norfolk State University have now demonstrated a 44nm 'spaser' that performs a laser's functions by the alternative means of surface plasmons. By using such an unorthodox technique, the researchers have been able to overcome the minimum size limitation to lasers, and they even claim spasers could be made as small as 1nm in diameter. Peeking into the (not too near) future, this could improve magnetic data storage beyond its current physical limits, and even lead to the development of optical computers that "can operate at hundreds of terahertz" -- and here you were, thinking that your brand spanking new Core i7 system with Blu-ray was future-proof.
