World first: China completes 1,000-km hollow-core fiber test

China has recently completed the world's first 1,000-kilometer hollow-core optical fiber bidirectional real-time transmission test, marking a breakthrough in key technologies for next-generation communication networks. The hollow-core optical fiber used in the test was wound on spools, each containing two to five kilometers of optical fiber. Over 300 such spools were assembled to establish a 1,000-kilometer transmission link for the experiment. Hollow-core optical fiber technology has already been deployed in the world's first cross-border commercial financial dedicated line using hollow-core fiber, connecting Shenzhen and Hong Kong. More than 10 commercial and pilot projects have also been rolled out in Asia, Europe and other regions. #coolchina #apec #cgtn #APECChinaYear 📺 Subscribe to our YouTube channel and stay updated with our latest analysis and interviews:👇 https://www.youtube.com/channel/UCgrNz-aDmcr2uuto8_DL2jg 👈 Download our APP on Apple Store (iOS): https://itunes.apple.com/us/app/cctvnews-app/id922456579?l=zh&ls=1&mt=8 Download our APP on Google Play (Android): https://play.google.com/store/apps/details?id=com.imib.cctv For more: https://www.cgtn.com/video Most watched videos: Impossible Challenge: 30 seconds to count banknotes BLINDFOLDED https://www.youtube.com/watch?v=ZmP_Ybj-jws Impossible Challenge: Gymnastics Boy Arat Hosseini from Iran! https://www.youtube.com/watch?v=8sxX--U4c8w Impossible Challenge: How to calm babies in 5 seconds? https://www.youtube.com/watch?v=kR3q9sXM7WA