A bi-directional fiber-free-space optical (FSO)-fifth-generation (5G) millimeter-wave (MMW)/5G new radio (NR) sub-THz convergence with intensity-modulated downlink 40 Gbit/s/100 GHz 5G NR sub-THz signals ( x - and y -polarizations), and phase-modulated uplink 10 Gbit/s/28 GHz and 10 Gbit/s/24 GHz 5G MMW signals is established practicably, by adopting a parallel/orthogonally polarized dual-carrier mechanism, phase modulators, and remote injection locking distributed feedback laser diodes (DFB LDs) for demonstration. It is a pioneering work to realize a bi-directional fiber-FSO-5G MMW/5G NR sub-THz convergence for providing high downlink/uplink traffic capacity with accepted transmission performance. Through 20 km single-mode fiber transmission, 500 m free-space link, and 1 m/4 m RF wireless transport, impressively low bit error rate of 10 ⁻⁹ and accepted PAM4/NRZ eye diagrams are acquired. Such established bi-directional fiber-FSO-5G MMW/5G NR sub-THz convergence accelerates a feasible solution that can afford high traffic capacity with qualified transmission performance, and develops the state achieved by the incorporation of optical fiber network with FSO-5G MMW/5G NR sub-THz convergence. It discloses a brilliant convergence developed for bi-directional high-speed and long-reach transmission with given transmission performance.

中文翻译：

---

双向光纤-FSO-5G MMW/5G新无线电次太赫兹融合

双向光纤自由空间光学 (FSO)-第五代 (5G) 毫米波 (MMW)/5G 新无线电 (NR) 次太赫兹频率与强度调制下行链路 40 Gbit/s/100 GHz 5G 的融合NR 亚太赫兹信号 ( x - 和 y极化），并通过采用平行/正交极化双载波机制、相位调制器和远程注入，切实建立相位调制上行链路10 Gbit/s/28 GHz和10 Gbit/s/24 GHz 5G MMW信号锁定分布式反馈激光二极管 (DFB LD) 用于演示。实现双向光纤-FSO-5G MMW/5G NR sub-THz融合以提供高下行/上行流量容量和可接受的传输性能是一项开创性的工作。通过 20 公里单模光纤传输、500 米自由空间链路和 1 米/4 米射频无线传输，令人印象深刻的低误码率 10 ^-9并获得公认的 PAM4/NRZ 眼图。这种建立的双向光纤-FSO-5G MMW/5G NR sub-THz融合加速了一个可行的解决方案，可以提供高流量容量和合格的传输性能，并发展光纤网络与FSO-5G MMW并入所达到的状态/5G NR sub-THz 收敛。它公开了一种为具有给定传输性能的双向高速和远距离传输而开发的出色融合。