News tagged with light signals
Compressing photonic signals for greater bandwidth
Cornell researchers have developed an ingenious method to time-compress optical signals. The process could enable optical communication systems to carry many more bits per second or could also be used to generate ...
Nov 03, 2009 |
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Color sensors for better vision
CMOS image sensors in special cameras -- as used for driver assistance systems -- mostly only provide monochrome images and have a limited sensitivity to light. Thanks to a new production process these sensors ...
Oct 05, 2009 |
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Lasers generate underwater sound
Scientists at the Naval Research Laboratory (NRL) are developing a new technology for use in underwater acoustics. The new technology uses flashes of laser light to remotely create underwater sound. The new ...
Sep 04, 2009 |
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New nanolaser -- spaser -- key to future optical computers and technologies
(PhysOrg.com) -- Because the new device, called a "spaser," is the first of its kind to emit visible light, it represents a critical component for possible future technologies based on "nanophotonic" circuitry, ...
Aug 16, 2009 |
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Ghost remains after black hole eruption
NASA's Chandra X-ray Observatory has found a cosmic "ghost" lurking around a distant supermassive black hole. This is the first detection of such a high-energy apparition, and scientists think it is evidence ...
May 28, 2009 |
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Vigilant windows
Is someone sneaking around in front of the window trying to break in? Windows and doors are now being sensitized to suspicious movements: they can detect whether and how quickly something is moving. If it ...
Mar 17, 2009 |
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Engineers tune a nanoscale grating structure to trap and release a variety of light waves
People debating politics are well-advised to shed more light than heat. Engineers working in optical technologies have the same aspiration.
Feb 17, 2009 |
4.6 / 5 (5) |
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Paper sheds new 'light' on fascinating rhythms of the circadian clock
(PhysOrg.com) -- Scientists have long known that interrupting the 24-hour circadian rhythm plays havoc with the lives and health of medical, military and airline personnel, factory employees and travelers.
Biology /
Feb 16, 2009 |
4.6 / 5 (7) |
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Bright lights, not-so-big pupils
A team of Johns Hopkins neuroscientists has worked out how some newly discovered light sensors in the eye detect light and communicate with the brain. The report appears online this week in Nature.
Medicine & Health / Medical research
Dec 31, 2008 |
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