Metasurface for 6G hybrid networks converts light into microwaves

In sixth generation (6G) wireless communications, hybrid systems are critical, which can

take advantage of both optical andmicrowave wireless technology. Physicists at Southeast University in China have developed a hybrid wireless transmitter that converts light into microwaves based on an optically programmed time-varying metasurface. The study is published in the journal Light Science & Application.

Hybrid transmitter implemented opticallyprogrammable time-varying metasurface, which is created by heterogeneous integration of a high-speed and linear photoelectric detection circuit into a reflective programmable structure. The profile of the whole platform is about 2 mm.

With this hybrid integration strategythe microwave reflection spectrum of a metasurface can be modulated by light intensity at high speed. This, as scientists note, provides direct conversion and transmission of a light signal into a microwave.

Image: Xin Ge Zhang et al., Light Science & Application

The Metasurface Transmitter is capable of directlytranslate the light signal into the microwave region without the use of frequency downconversion. In addition, as noted by the authors of the work, the metasurface converts a single light signal into two microwave signals using the dispersion characteristics of the metasurface.

To illustrate the operation of the transmitter onBased on the metasurface, the researchers have assembled a hybrid wireless communication system that allows two-channel data transmission over a light-microwave link. Testing has shown that such a system can transmit and receive two different videos simultaneously and independently.

Image: Xin Ge Zhang et al., Light Science & Application

“The presented technology is capable of simultaneouslyrealize visible light communication and microwave communication, which can be used for some typical applications where two different communication lines are required. Thus, this technology creates a platform for future 6G multi-domain integrated and full-spectrum wireless communications,” the scientists said.

Read more

The monster at the center of our Galaxy: look at the photo of a black hole in the Milky Way

American satellite "saw" an unusual message from Earth

Published video from the rocket, which was launched from an experimental accelerator