Chinese scientists have recently made breakthrough progress in the fields of optical communication and 6G, taking the lead in achieving cross network integration between fiber optic communication and wireless communication systems internationally. The independently developed "fiber optic wireless integrated fusion communication system" has set a new record for data transmission rate. This achievement was recently published online in Nature. The improvement of computing power in AI data centers and the vigorous development of the next generation wireless communication network 6G require high-speed and low latency signal transmission in diverse scenarios. However, there is a "bandwidth gap" between fiber optic communication and wireless communication in terms of signal architecture and hardware constraints. To this end, Peking University, together with research and development teams such as Pengcheng Laboratory, Shanghai University of Science and Technology, and National Information Optoelectronics Innovation Center, has created the concept of "fiber wireless integrated fusion communication" and successfully developed ultra wideband integrated photonic devices above 250GHz (gigahertz) using integrated optical solutions. The new system developed on this basis achieves single channel 512Gbps (gigabit per second) signal transmission for fiber optic communication and single channel 400Gbps signal transmission for wireless communication. The new system has cracked the 'bandwidth gap' and set a new record for data transmission rate. ”The corresponding author of the paper and Vice Dean of the School of Electronics at Peking University, Wang Xingjun, said that this system can support dual-mode transmission of fiber optic communication and wireless communication, significantly improving anti-interference ability. The team also simulated a large-scale user access scenario for 6G and demonstrated real-time 8K video access for 86 channels, with transmission bandwidth more than 10 times higher than the current 5G standard. The reviewer of Nature believes that this work "makes an important contribution to the advancement of integrated optical and terahertz communication systems". Wang Xingjun stated that the new system has great potential for application in scenarios such as 6G base stations and wireless data centers, and is expected to lay a research foundation for the next generation of ultra wideband high-speed fiber wireless integrated communication. (New Society)