Optically wound high-speed data transmission system achieves terabits per second

A team of multinational scientists headed by the University of South Carolina, USA, said on June 25 that light beams can be intertwined and combined to transmit data at extremely high speeds.

Broadband cables typically support a maximum download speed of 30 megabits per second, and the research team's newly developed beam winding and combining system can achieve a maximum transmission speed of 2.56 terabits per second, which is 8,500 times the former. The new research results are expected to be used to establish high-speed satellite communications networks, short-range space and terrestrial networks, or optical cables used to provide people with Internet services.

Alan Welney, Professor of Electrical Engineering at the Vilbert Institute of Engineering at the University of South Carolina, said that people can use light to accomplish many things that cannot be done with electricity. This is the beauty of light. People can manipulate large numbers of photons in different ways at extremely fast speeds.

Welner and his colleagues manipulated eight beams of light using a "phase hologram" that wraps a beam of light. Each beam of light twines like a DNA helix and extends in a free space. Each beam has its own twist and can be encoded into both "1" and "0" data as separate streams of data, like the separated channels in a radio broadcast.

The research team demonstrated data transmission in the open space of the laboratory to simulate satellite-to-satellite communication in space. The next step in the research field of optical entanglement communication includes how to adjust it for optical fiber communications and make it similar to the transmission of data over the Internet.

The personnel involved in the study came from the United States, Europe, China, Pakistan, and Israel, including Professor Wang Jian. He was the chief author of the research paper and left the University of South Carolina after completing the research. Now he works at Huazhong University of Science and Technology in China. Verney said that they are not the inventors of light winding, but borrowed the concept of light winding and increased the data transfer speed to trillions of bits per second. (Reporter: Mao Li Wang Xiaolong)

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