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光子太赫兹通信技术研究进展(特邀)

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具有高载波频率与可用大带宽的太赫兹频带(频率范围0。1～10 THz)已成为满足未来6G移动通信网络所需的100 Gbit/s甚至1 Tbit/s超高数据速率的候选频段。与完全使用电子器件生成太赫兹信号的全电方式相比，光子辅助技术可以突破电子器件带宽限制的瓶颈，生成高频率、大带宽、频率灵活可调，并易与大容量光纤链路集成的太赫兹信号。基于光子学辅助技术与各种先进器件及数字信号处理算法，在宽带太赫兹通信和感知的多个领域取得了重大成果:在大容量太赫兹传输领域，综合应用多维复用技术，实现了最大容量6。4 Tbit/s的光子太赫兹信号传输;在远距离太赫兹传输领域，设计了高增益太赫兹天线模块，实现了长达400 m的335 GHz太赫兹无线传输距离;在实时太赫兹通信领域，基于商用数字相干光学模块实现了创纪录的100、2×100 GbE太赫兹实时通信系统;在太赫兹通信与感知一体化领域，分别基于时分复用与频分复用方案生成了通信与感知一体化信号，同时实现了太赫兹频段的大容量通信与高精度感知功能;在太赫兹有线传输领域，基于镀银金属空芯光纤，实现了 300 GHz频段太赫兹信号的 1 m有线传输，系统净容量超过140 Gbit/s。本文分别对以上系统的实验装置进行了详细的介绍，并对实验结果进行了讨论。
Research Progress in Photon-Assisted Terahertz Communication Technology(Invited)
Terahertz band(0.1 THz to 10 THz)with high carrier frequency and large available bandwidth has become a promising candidate to meet the 100 Gbit/s or even 1 Tbit/s data rate required by the future six-generation(6G)mobile communication networks.Compared with the all-electrical methods to generate terahertz signals,the photon-assisted technology can break the bottleneck of the bandwidth limit of the electronics devices,and generate the terahertz signal with high frequency,large bandwidth,flexible tunability and easy integration with the large capacity fiber link.Based on the photon-assisted technology and various key techniques,devices and advanced digital signal processing algorithms,we have obtained many great achievements in different fields of broadband terahertz communication and sensing.In the field of large-capacity terahertz transmission,we realize the large system capacity of over 1 Tbit/s based on multidimensional multiplexing techniques,and the largest capacity can be up to 6.4 Tbit/s.In the field of long-distance terahertz transmission,we have designed a high-gain terahertz antenna module and realized 335 GHz THz wireless transmission of up to 400 m.In the field of real-time terahertz communication,we achieve a record-breaking 100,2×100 GbE terahertz real-time communication system based on the commercial digital coherent optics module.In the field of integrated sensing and communication(ISAC),we generate the ISAC signal based on both time division multiplexing and frequency division multiplexing schemes,and realize the communication in the terahertz band and the high-precision sensing function at the same time.In the field of terahertz wired transmission,we realize the 1 m wired transmission of 300 GHz terahertz signal based on the Ag-coated metallic hollow core fiber,and the net system capacity is over 140 Gbit/s.In this paper,the experimental setups of the above systems have been demonstrated in detail and results have also been discussed.

photon-assisted technologylarge-capacity terahertz transmissionlong-distance transmissionreal-time terahertz communicationintegrated terahertz sensing and communicationmetallic hollow core fiber

余建军

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复旦大学信息科学与工程学院,上海 200433

光子辅助技术 大容量太赫兹传输 长距离太赫兹传输 太赫兹实时通信 太赫兹通信感知一体化 金属空芯光纤

国家重点研发计划国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金

2018YFB180100461935005617201060156183500262127802

2024

10.3788/LOP231624

激光与光电子学进展
中国科学院上海光学精密机械研究所

激光与光电子学进展

CSTPCD北大核心
影响因子：1.153
ISSN：1006-4125
年,卷(期)：2024.61(1)
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