研究论文

基于多芯光纤远端光真时延多波束赋形系统的研究

  • 张宸博 , 1 ,
  • 朱逸萧 , 2, * ,
  • 胡卫生 2
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  • 1. 北京大学电子学院, 北京 100871
  • 2. 上海交通大学电子工程系, 上海 200240
朱逸萧(通信作者),副教授,研究方向为短距光互连,电子信箱:

张宸博,助理研究员,研究方向为光载无线通信,电子信箱:

收稿日期: 2025-05-06

  网络出版日期: 2025-07-03

基金资助

国家自然科学基金面上项目(62271305)

版权

版权所有,未经授权,不得转载。

Research on a remote true-time-delay multi-beamforming system based on multicore fibers

  • Chenbo ZHANG , 1 ,
  • Yixiao ZHU , 2, * ,
  • Weisheng HU 2
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  • 1. School of Electronics, Peking University, Beijing 100871, China
  • 2. Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received date: 2025-05-06

  Online published: 2025-07-03

Copyright

All rights reserved. Unauthorized reproduction is prohibited.

摘要

在5G/6G光载无线接入网中,远端无线单元需具备多波束赋形功能,以支持泛在移动终端的可靠接入。针对这一需求,多芯光纤凭借其通道数量多、通道间时延一致性好的优势,成为具有潜力的链路方案。提出一种基于多芯光纤的远端光真时延多波束赋形架构,可用于5G光载无线接入网。该架构利用多芯光纤作为链路,并在中心单元部署具有等色散间隔的啁啾光栅用于提供等间距时延。通过分别调节多路光载波的波长,系统可连续调整远端对应波束的指向,实现中心化的多波束操控。为了验证架构可行性,采用2 km的7芯光纤作为光载无线链路开展实验,搭建了2×2远端波束赋形验证系统。实验结果表明:通过调谐各个光载波的波长,可实现各波束指向的独立控制;与传统单模光纤相比,多芯光纤将通道间时延抖动降低了1个量级以上,最大时延抖动仅为1.7 ps,从而确保波束指向的长期稳定性。此外,实验还表明,多芯光纤的芯间串扰对预设时延和宽带无线信号信噪比的影响可忽略不计。本架构为实现远端波束赋形功能提供了可行、稳定的解决方案,对于5G/6G移动接入网具有重要应用价值。

本文引用格式

张宸博 , 朱逸萧 , 胡卫生 . 基于多芯光纤远端光真时延多波束赋形系统的研究[J]. 科技导报, 2025 , 43(12) : 153 -160 . DOI: 10.3981/j.issn.1000-7857.2025.05.00016

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