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28-October-04, 09:52 AM
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| News Hound  |  Slashdot // Optical Control of Light on a Silicon Chip An anonymous reader writes "Researchers at Cornell University have demonstrated a device that allows one low-powered beam of light to switch another on and off, on silicon, a key component for future “photonic” microcircuits in which light replaces electrons for propagating signals. It is highly desirable to use silicon—the dominant material in the microelectronic industry—as the platform for these photonic chips. The approach developed confines the beam to be switched in a circular resonator, greatly reducing the footprint required on the chip and allowing a very small change in refractive index to shift the material from transparent to opaque." http://slashdot.org/article.pl?sid=04/10/28/0537232 | |
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