Ultracompact photodetector for optical data transmission

Data traffic is growing worldwide. Glass-fiber cables transmit information over long distances at the speed of light. Once they have reached their destination, however, these optical signals have to be converted into electrical ...

Innovations from the wild world of optics and photonics

Traditional computers manipulate electrons to turn our keystrokes and Google searches into meaningful actions. But as components of the computer processor shrink to only a few atoms across, those same electrons become unpredictable ...

Counting people with WiFi

Researchers in UC Santa Barbara professor Yasamin Mostofi's lab are proving that wireless signals can do more than provide Internet access. They have demonstrated that a WiFi signal can be used to count the number of people ...

Q&A: Working towards 5G

Prof. Chenhao Qi of Southeast University, China, and Columbia University in the US, researches wireless communications technologies and sparse signal processing. Here, he talks about the significance of his paper 'Uplink ...

How wireless technology can dramatically improve ship safety

The sinking of the Italian cruise ship Costa Concordia in 2012 – and the reported difficulties in evacuating over 4,000 people with the eventual loss of 32 lives –underlined the urgent need to accurately trace passengers ...

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