28 Nov '13, 5pm

A New Record for Terahertz Transmission

Illustration: Emily Cooper Bridging a Gap: Two components from the beam of a mode-locked laser shine on a photodiode to produce near-terahertz radiation. A monolithic microwave IC receives the signal and extracts the data. The problem with the radio spectrum between 3 and 3000 megahertz is that it’s crowded. Television, radio, mobile phones, Bluetooth, GPS, two-way communication devices, and Wi-Fi all operate in this high- to ultrahigh-frequency range. So with nowhere to go but up, researchers have been working for decades to utilize the 3- to 3000-gigahertz span. In October, a team reported a hopeful sign—a record 100-gigabit-per-second wireless data transmission. Scientists in Germany, at the Karlsruhe Institute of Technology (KIT), the Fraunhofer Institute for Applied Solid State Physics, and the University of Stuttgart, created a wireless connection between a transmitt...

Full article: http://spectrum.ieee.org/telecom/wireless/a-new-record-fo...

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A New Record for Terahertz Transmission

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