Antenna to boost wireless security
Source: CNet News
An optical antenna that uses a geometrically shaped lens promises to bring greater security to wireless networks for businesses, according to British scientists. The new device, developed by researchers at the University of Warwick's engineering department, uses a combination of precise curvatures on the lens and a multilayered filter to achieve its goal.
Optical antennas are already available. But this new antenna is so precise, according to the researchers, that it can detect a signal on a single wavelength of light. The scientists, led by professor Roger Green, assert that the device is 100 times more efficient at gathering in a signal than any previous optical sensor of this kind.
