(PhysOrg.com) -- Cornell researchers have demonstrated that the passage of a light beam through an optical fiber can be controlled by just a few photons of another light beam.
Optics & Photonics
Nov 9, 2011
6
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In the search for extraterrestrial intelligence, astronomers have hunted for radio signals and ultra-short laser pulses. In a new paper, Avi Loeb (Harvard-Smithsonian Center for Astrophysics) and Edwin Turner (Princeton University) ...
Astronomy
Nov 3, 2011
54
1
Plastic optical fibers offer a more efficient method of data transmission in telecommunications. While glass optical fibers allow very high data rates to be transmitted, they are expensive and difficult to work with. Twisted ...
Engineering
Oct 28, 2011
0
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(PhysOrg.com) -- Researchers at Purdue University and the National Institute of Standards and Technology (NIST) have created a device small enough to fit on a computer chip that converts continuous laser light into numerous ...
Optics & Photonics
Oct 19, 2011
0
0
Einstein wrote about them, and we're still looking for them -- gravitational waves, which are small ripples in the fabric of space-time, that many consider to be the sounds of our universe.
Astronomy
Oct 3, 2011
0
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Nestled between radio waves and infrared light is the terahertz (THz) portion of the electromagnetic spectrum. By adding a nanoscale bit of graphene, researchers have found a better way to tune radiation for a THz transmitter.
Nanophysics
Sep 12, 2011
11
0
Light traveling in an optical fiber loses power over distance. A number of factors are responsible for this power loss, but one that is particularly important at high data rates is the loss that occurs due to changes in light ...
Optics & Photonics
Aug 19, 2011
0
0
Safety while driving is paramount, and Europeans are making efforts to ensure our well-being in vehicles - whether we are behind the steering wheel or in a passenger seat. The project partners have pushed the envelope by ...
Engineering
Aug 9, 2011
0
0
(PhysOrg.com) -- A "four-eyed" fish that sees simultaneously above and below the water line has offered up a dramatic example of how gene expression allows organisms to adapt to their environment.
Plants & Animals
Jul 20, 2011
3
0
By swapping one superconducting material for another, researchers at the National Institute of Standards and Technology (NIST) have found a practical way to boost the efficiency of the world's fastest single-photon detector, ...
General Physics
Jun 30, 2011
0
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