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Optoelectronics is a valuable solution to scale up wireless links frequency to sub-THz in the next generation antenna systems and networks. We propose an innovative, low-power consumption, small footprint building block for 5G and 6G new radio wireless transmission allowing broadband capacity (e.g., 10-100 Gb/s per link and beyond). We pioneer the first wireless datalink based on graphene, reaching setup limited sub-THz carrier frequency and multi-Gbit/s data rate using a graphene-based integrated optoelectronic mixer capable of mixing an optically generated ~100 GHz reference oscillator with a baseband electrical signal. We report >96GHz optoelectronic bandwidth and -44 dB upconversion efficiency with a footprint significantly smaller than those of state-of-the-art photonic transmitters (i.e., <0.1 mm2). This paves the way to the development of novel arrayed-antennas for millimeter-wave technology relying on a new approach which takes advantage of optics. These results have been achieved thanks to an integrated-photonic technology based on wafer-scale high-mobility graphene.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Optoelectronics, graphene-based mixer, sub-THz carrier frequency

Date published: 2023-10-13

Publisher: Springer Science and Business Media LLC

Journal:

• Nature Communications (ISSN: 20411723) vol. 14 issue. 1 6471

Funding:

• EC | Horizon 2020 Framework Programme 881603
• MEXT | Japan Society for the Promotion of Science 21H05233
• MEXT | Japan Society for the Promotion of Science 23H02052
• MEXT | Japan Society for the Promotion of Science 21H05233
• MEXT | Japan Society for the Promotion of Science 23H02052

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1038/s41467-023-42194-6

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Updated at: 2025-02-15 12:30:55 +0900

Published on MDR: 2025-02-15 12:30:55 +0900