[China Telecom completed the world's first 1,000-kilometer hollow-core optical fiber bidirectional real-time transmission verification] "Science and Technology Innovation Board Daily" reported on the 4th that China Telecom Research Institute and YOFC, a co-construction unit of the national key laboratory, and ZTE jointly completed the world's first 1,000-kilometer hollow-core fiber two-way real-time transmission verification: 1007.48 kilometers of hollow core On the optical fiber link, the extended C+L band single-wavelength 800Gb/s (PCS-16QAM modulation) single-fiber bidirectional transmission is achieved, with a total capacity of 128Tb/s, pushing the real-time transmission distance record of hollow-core optical fiber to a new height, marking another milestone breakthrough in China's key core technologies for next-generation optical communications. ⁠ (Science and Technology Innovation Board Daily reporter Huang Xinyi)