Power and data simultaneous transmission using double-clad fibers towards 6G

Power and data simultaneous transmission using double-clad fibers towards 6G

Citation

Souza, L. C., Pinto, F. B. F., Andrade, T. P. V., & Sodré Junior, A. C. (2025). Power and data simultaneous transmission using double-clad fibers towards 6G. Received: 31 October 2024; Accepted: 28 January 2025. Published by Springer Nature

Keywords

  • Double-clad fiber (DCF)
  • FiWi (fiber/wireless)
  • Mm-wave (millimeter-wave)
  • Power-over-fiber (PoF)
  • Radio-over-fiber (RoF)
  • 5G New Radio (NR)
  • Centralized radio access network (C-RAN)
  • Remote antenna unit (RAU)
  • Optical power
  • Data transmission
  • Simultaneous transmission
  • Photovoltaic power converter (PPC)
  • Optical-to-electrical (O/E) conversion
  • Analog RoF (A-RoF)
  • Throughput
  • Error vector magnitude (EVM)
  • 16-quadrature amplitude modulation (QAM)
  • Optical fiber infrastructure
  • High-power laser diode (HPLD)
  • Optical circulator (OC)
  • Photodetector (PD)

Brief

This article presents the first implementation of a radio- and power-over-fiber (RPoF) system utilizing double-clad fiber (DCF) for 6G networks, achieving simultaneous transmission of a 26-GHz 5G New Radio (NR) signal and 20 W of optical power over 250 meters, while optically powering remote antenna unit components.

Summary

This article presents the first implementation of a radio- and power-over-fiber (RPoF) system utilizing double-clad fiber (DCF) for 6G networks, successfully achieving simultaneous transmission of a 26-GHz 5G New Radio (NR) signal and over 20 W of optical power over a 250-meter DCF link. The system optically powers key components of a remote antenna unit (RAU), such as the photodetector and RF amplifier, demonstrating the feasibility of power-over-fiber (PoF) technology for these applications. The experimental results show that the proposed RPoF system meets the 3rd Generation Partnership Project (3GPP) requirements in terms of error vector magnitude and achieves a throughput of 1.6 Gbps over a 5-meter wireless transmission in the millimeter-wave band. This work highlights the potential of integrating optical and wireless technologies using DCFs to support reliable and scalable beyond 5G (B5G) and 6G systems. The research addresses a gap in the literature by demonstrating the powering of RAU components and the integration of 5G NR, FiWi, and mm-wave technologies in a DCF-based RPoF system.

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