5G

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After 5G comes.. 6G:

Upcoming 5G networks are a temporary fix and there is already talk of 6G. For a long term solution, esearchers have focused on terahertz frequencies, the submillimeter wavelengths of the electromagnetic spectrum. Data traveling at terahertz frequencies could move hundreds of times faster than today's wireless. "This work represents a complete paradigm shift for the way a laser can be operated," said Federico Capasso, the Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical Engineering and senior author of the paper. "This new phenomenon transforms a laser – a device operating at optical frequencies – into an advanced modulator at microwave frequencies, which has a technological significance for efficient use of bandwidth in communication systems."

Laser paradigm shift promises terahertz wireless communications | Smart2.0