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This study introduces an ultra-wideband integrated photonics system for seamless fiber-wireless communication. It achieves 512 Gbps over fiber and 400 Gbps wirelessly, enabling high-density, low-latency networks.

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Area of Science:

  • Photonics and Telecommunication Engineering
  • Integrated Optics
  • Wireless Communication Systems

Background:

  • Telecommunication systems face challenges in unifying ultrawide bandwidth and low latency due to bandwidth mismatches between fiber and wireless links.
  • Existing architectures and hardware constraints limit high-speed, compatible transmission across fiber and wireless domains, hindering unified system design.
  • The need for high-throughput-density, congestion-free fiber-wireless links in wideband-access scenarios remains a critical challenge.

Purpose of the Study:

  • To present an ultra-wideband (UWB) integrated photonics scheme for shared-bandwidth fiber-wireless communication.
  • To overcome the bandwidth mismatch and compatibility issues between fiber and wireless transmission domains.
  • To demonstrate unprecedented data transmission capabilities and enable high-density, low-latency communication networks.

Main Methods:

  • Development of an integrated photonics scheme utilizing electro-optic (EO) and optic-electro (OE) conversions with >250 GHz bandwidth.
  • Implementation of a complex bidirectional gated recurrent unit (complex-biGRU) algorithm for data processing.
  • Utilizing an all-optically assisted ultra-broadband wireless scheme for high-density access.

Main Results:

  • Achieved ultrahigh single-lane data rates: 512 Gbps for short-reach fiber and 400 Gbps for wireless transmission.
  • Demonstrated cross-architecture adaptability and compatibility between fiber and wireless links using the same devices.
  • Successfully transmitted multichannel 8K video across 86 channels (138-223 GHz) in real-time, showcasing high-density access.

Conclusions:

  • The proposed UWB integrated photonics scheme effectively bridges the bandwidth gap between fiber and wireless communication.
  • The system enables ultrahigh data rates and high-density access, paving the way for future low-latency telecommunication networks.
  • This unified approach holds significant potential for advancing high-speed, densified communication infrastructure.