Skip to main content

Grounbreaking invention underway for faster, cooler computers

New optical device for faster, cooler computers
The optical device could enhance optical information processing in computers. Photo: Bloomberg
Washington: Scientists have developed a new “groundbreaking” optical device that may lead to more powerful computers that run faster and are cooler. The optical device could enhance optical information processing in computers.
In an optical diode, the light input in one direction is transmitted while the light input in the opposite direction is blocked.
The new optical diode, designed by Lan Yang and her collaborators from Washington University in St Louis, is made from parity-time (PT) symmetric micro-resonators in which loss of one of the resonators is balanced by the gain in the other.
Breaking the PT-symmetry, by tuning the coupling strength between the resonators, leads to strong field localisation and hence enables nonlinearity-based one-way transmission for light.
Yang’s group created the optical diode by coupling tiny doughnut shaped optical resonators—one with gain and the other with loss—on a silicon chip. “This diode is capable of completely eliminating light transmission in one direction and greatly enhancing light transmission in the other non-reciprocal light transmission,” said Bo Peng, a graduate student in Yang’s group and the paper’s lead author.
An electrical diode prevents electricity from back-flow along a wire providing protection to crucial parts of an electronic circuit or processor; an optical diode does the same thing with light.
“We believe that our discovery will benefit many other fields involving electronics, acoustics, plasmonics and meta-materials,” Yang said. “Coupling of so-called loss and gain devices using PT (parity-time)-symmetry could enable such advances as cloaking devices, stronger lasers that need less input power, and perhaps detectors that could ‘see’ a single atom,” said Yang.

http://www.livemint.com/Industry/H6WhRl3bDgeVpxpcRGt40K/New-optical-device-for-faster-cooler-computers.html

Comments

Post a Comment

Popular posts from this blog

Best IELTS and English language training institutions in Hyderabad

IELTS stands for International English Language Testing System. As the name implies it is basically an English test for testing the proficiency of the language in an individual.  Training for IELTS can be taken to pass the IELTS exam or to develop good english language skills. I am giving the training institute addresses for Hyderabad. The test system is jointly managed by the British Council,IDP education ltd and University of Cambridge ESOL Examinations and more than 1 million candidates are taking the exam all over the world. The test has two versions : 1. Academic 2. General training Academic  version is for people who plan to continue their higher education by enrolling in universities in countries like US,UK,Australia,Canada,New Zealand etc.The academic institutions in these countries consider the IELTS score as a criteria for the admission process. General training is mostly for immigration purposes in countries like Australia,New Zealand,Canada etc. It may ...
9 comments
Read more

How to use home loans most effectively for tax benefits

1) Deduction on interest: If you are paying EMIs for a home loan you took to buy a house, the interest component in the EMI can be claimed as deduction. You must be both an owner and a co-borrower (in the loan) to claim tax benefits. This deduction can be claimed starting the year in which the construction of the house is completed. Suppose the construction of your house was completed on August 30, 2014, you can claim deduction for interest for the entire 12 months in financial year 2014-15. So every year a maximum of Rs. 2 lakh can be claimed for a house that you use for your own residence. If your house is rented, the entire interest for the year can be claimed as deduction. The interest payments for the year shall result in a loss under the head 'income from house property'. This loss can be adjusted against in the same year against other heads of income in your income tax return including salary. Therefore, it reduces your total taxable income and the tax you pay thereon. A...
2 comments
Read more

Intellectual battle against ISIS as important as Military: Sheikh Makhtoum of Dubai

The global financial crisis taught the world how profoundly interdependent our economies have become. In today's crisis of extremism, we must recognize that we are just as interdependent for our security, as is clear in the current struggle to defeat ISIS. Mohammed bin Rashid Al Maktoum, VP and prime minister of the UAE, ruler of Dubai If we are to prevent ISIS from teaching us this lesson the hard way, we must acknowledge that we cannot extinguish the fires of fanaticism by force alone. The world must unite behind a holistic drive to discredit the ideology that gives extremists their power, and to restore hope and dignity to those whom they would recruit. ISIS certainly can – and will – be defeated militarily by the international coalition that is now assembling and which the UAE is actively supporting. But military containment is only a partial solution. Lasting peace requires three other ingredients: winning the battle of ideas; upgrading weak governance; and ...
Post a Comment
Read more