6G may be optical lasers leading to terahertz frequencies

Authors: https://www.osapublishing.org/optica/abstract.cfm?URI=optica-5-4-475

6G promises to be hundreds of times faster than Wi-Fi you use today. Scientists have discovered that they can turn a laser (optical light) into a device capable of modulating at microwave frequencies.They discovered that a laser allows multiple and different pieces of information to be transmitted through a single frequency channel.

How this discovery works practically is that light inside a laser oscillates at microwave frequencies. These  oscillations are externally modulated and encoded onto a carrier signal.

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