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Tbps wide-field parallel optical wireless communications based on a metasurface beam splitter.

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A new wide-angle optical wireless communication (OWC) system supports 144 users with 200 Gbps each. This breakthrough enables ultra-high communication capacity for future 6G mobile networks.

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Area of Science:

  • Optical Wireless Communication (OWC)
  • Metasurface Technology
  • 6G Mobile Networks

Background:

  • High-quality optical links are crucial for OWC performance in 6G networks.
  • Existing OWC systems face limitations in angle, user capacity, and speed.
  • Metasurfaces offer potential for advanced optical link functionalities.

Purpose of the Study:

  • To propose a novel wide-angle OWC optical link scheme.
  • To enhance parallel communication capabilities for multiple users.
  • To achieve ultra-high communication capacity and wide coverage.

Main Methods:

  • A compact beam splitter utilizing a metasurface and fiber array was designed.
  • High-speed optical module sources and wavelength division multiplexing were employed.
  • Metasurface polarization multiplexing was utilized for wide-angle coverage without crosstalk.

Main Results:

  • A wide-angle (~120°) OWC link supporting up to 144 users was demonstrated.
  • Each user achieved a communication speed of 200 Gbps.
  • The system demonstrated an ultra-high communication capacity exceeding 28 Tbps.
  • Full-range wide-angle OWC without blind spots or user crosstalk was achieved.

Conclusions:

  • The proposed OWC scheme offers high-speed, wide communication area, and multi-user parallel capabilities.
  • This technology paves the way for revolutionary high-performance OWC in 6G networks.
  • Metasurface integration enables unprecedented performance in optical wireless communication systems.