The real-time transmission net rate of China's terahertz experimental system exceeds 100Gbps

Zhongguancun Online News, recently, the network communication and security Zijinshan Laboratory, together with Southeast University, Pengcheng Laboratory, Fudan University and China Mobile and other teams, built the first 360-430GHz terahertz 100/200Gbps real-time wireless transmission communication experimental system for the first time. Realize terahertz real-time wireless transmission with a single-wavelength net rate of 103.125Gbps and a dual-wavelength net rate of 206.25Gbps. The communication rate is 10-20 times higher than that of 5G, creating the highest real-time transmission of terahertz real-time wireless communication publicly reported in the world. record.


The terahertz frequency band is extremely rich in frequency resources, which can support 100Gbps-1Tbps ultra-high-speed wireless communication, thereby increasing the peak transmission rate of the existing 5G by one to two orders of magnitude. Traditional electronic terahertz technology is constrained by the inherent properties of electronic devices. The parameters of high-frequency electronic devices are gradually approaching the theoretical limit, and they face a series of difficult challenges such as large transmission loss, limited frequency and bandwidth.

After more than three years of overcoming difficulties, the team pioneered a real-time transmission architecture integrating photonic-terahertz optical fibers, completed the development of a photonic-terahertz real-time wireless communication experimental system, and broke public reports that the real-time transmission rate of a terahertz communication system exceeded 100Gbps. World record, and the achievement was selected into the OFC Demo Zone, a top international academic conference in the field of optical communication in 2022. This is also the only Demo Zone paper independently completed by Chinese mainland scholars in the history of OFC terahertz communication.

It is reported that this achievement can be integrated with the existing optical fiber network, expand to form 100-1000Gbps outdoor and indoor ultra-high-speed wireless access, replace the existing mobile network and optical fiber to achieve rapid deployment, and replace the huge number of cables in the data center to significantly reduce costs and power consumption , which can be used for inter-satellite communication, integrated access to space and space, etc.

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【Editor in charge: Jiang Hua TEL: (010) 68476606】