Chinese Scientists Make Breakthroughs in Optical Communications and 6G
Chinese Scientists Make Breakthroughs in Optical Communications and 6G
Chinese scientists have recently achieved groundbreaking progress in optical communications and 6G, realizing the world`s first cross-network integration between fiber-optic and wireless communication systems. The independently developed Fiber-Wireless Integrated Communication System has set a new record for data transmission rate. The findings were published online in Nature in the early morning of February 19.
Driven by the rapid growth of computing power in AI data centers and the booming development of 6G — the next-generation wireless communication network — there is a demand for high-speed, low-latency signal transmission across diverse scenarios. However, a bandwidth gap exists between fiber-optic and wireless communications in terms of signal architecture and hardware constraints.
In response, research teams from Peking University, Peng Cheng Laboratory, ShanghaiTech University, the National Innovation Center of Advanced Optoelectronic Devices and Integrated Systems, and other institutions proposed the concept of fiber-wireless integrated communication . Using integrated optical solutions, they successfully developed ultra-broadband integrated photonic devices operating above 250 GHz.
Based on these innovations, the new system delivers a single-channel transmission rate of 512 Gbps for fiber-optic communications and 400 Gbps for wireless communications.
The new system overcomes the “bandwidth gap” and sets a new world record for the highest known data transmission rate, according to Wang Xingjun, corresponding author of the paper and Vice Dean of the School of Electronics at Peking University. Supporting dual-mode transmission of fiber and wireless signals, the system greatly improves anti-interference capability. The team also demonstrated massive user access in a simulated 6G scenario, realizing real-time 8K video transmission across 86 channels — with transmission bandwidth over 10 times higher than the current 5G standard.
Reviewers for Nature described the work as “an important contribution to the advancement of integrated optics and terahertz communication systems.”
Wang noted that the new system holds great application potential in 6G base stations, wireless data centers and other scenarios, and is expected to lay the research foundation for the next generation of ultra-broadband, high-speed fiber-wireless integrated communications.
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