束方向元面辅助连贯光学无线多通道通信系统
Jin Tao1,2, Quan You1, Chao Yang1
1State Key Laboratory of Optical Communication Technologies and Networks, China Information Communication Technologies Group Corporation (CICT), Wuhan 430074, China.
Nanophotonics (Berlin, Germany)
|December 5, 2024
概括
这项研究引入了一种用于光学无线通信的新型超表面,使高容量,双向数据传输成为可能. 该系统每用户达到100 Gbps,并支持广播,克服了以前强度调制和直接检测方法的局限性.
科学领域:
- 有光无线通信的无线通信.
- 超材料和纳米光子学
- 一致的光学系统.
背景情况:
- 超表面设备为光学无线通信提供了诸如大转向角度和紧性等优势.
- 目前的系统经常使用强度调制和直接检测 (IM/DD),限制传输能力和信号质量.
- 现有的超表面系统面临的挑战是传输能力较低,光学信号噪声比 (OSNR) 较低.
研究的目的:
- 设计和演示一个双向的多通道光学无线系统,使用一个极化独立的超表面.
- 为了实现连贯的调制和接收,以提高光学无线通信性能.
- 克服IM/DD系统在容量和OSNR方面的局限性.
主要方法:
- 开发一个极化独立的超表面用于光束方向.
- 实现连贯的调制和接收技术.
- 双向多通道系统架构的实验演示.
主要成果:
- 同时向多个用户传送独家100Gbps连贯光学信号.
- 支持光学广播,总容量为900 Gbps.
- 在20°×20°视野的2米自由空间距离上演示操作.
结论:
- 拟议的超表面支持系统将光学连贯通信与超表面技术融合在一起.
- 降低了系统复杂性和成本,同时实现了高传输能力.
- 为高性能光学无线通信系统开辟了新的可能性.
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