{"slug": "chinese-team-builds-first-commercial-3-lane-highway-in-optical-fibre-to-boost", "title": "Chinese team builds first commercial ‘3-lane highway’ in optical fibre to boost capacity", "summary": "China activated the world's first three-band optical fibre communication system, a 35km link in Beijing that uses S-band, C-band, and L-band simultaneously to boost capacity by over five times. Developed by China Mobile and Hengtong Optic-Electric, the technology aims to support future AI networks by expanding data transmission through existing infrastructure.", "body_md": "# Chinese team builds first commercial ‘3-lane highway’ in optical fibre to boost capacity\n\nNewly activated system allows substantially more data to travel through existing infrastructure\n\n[Chao Kong](/author/chao-kong)in Beijing\n\nChina activated the world’s first three-band optical fibre communication system early this month, technology that its developers say could expand the carrying capacity of future AI networks.\n\nAccording to the project team, a single fibre can carry more than five times the traffic of conventional systems, while transmission capacity per core increases by nearly half.\n\n[China Mobile](https://www.scmp.com/topics/china-mobile?module=inline&pgtype=article)and its industry partners, including Hengtong Optic-Electric.\n\nThe 35km (21.7-mile) link connects major computing facilities in the city and serves as a commercial test bed for next-generation optical networking technologies, according to a report by Shanghai Securities News on June 3.\n\nThe newly activated system simultaneously uses three transmission windows – the S-band, C-band and L-band – within a conventional optical fibre, allowing substantially more data to travel through existing infrastructure. In a China Mobile statement, the approach was compared to expanding “a two-lane motorway into a three-lane highway” without building an entirely new road.\n\nMost long-haul fibre systems around the world rely mainly on the C-band and, increasingly, the L-band for commercial transmission, while technical challenges involving signal amplification, noise control and transmission stability have restricted the use of other parts of the optical spectrum.\n\nThe system works by combining two advances. It extends ultra-low-loss transmission capabilities into the S-band – a part of the light spectrum that was previously too unstable and noisy for regular commercial use – while combining them with multi-core fibre technology, according to the team.", "url": "https://wpnews.pro/news/chinese-team-builds-first-commercial-3-lane-highway-in-optical-fibre-to-boost", "canonical_source": "https://www.scmp.com/news/china/science/article/3356947/chinese-team-builds-first-commercial-3-lane-highway-optical-fibre-boost-capacity?utm_source=rss_feed", "published_at": "2026-06-13 04:00:06+00:00", "updated_at": "2026-06-13 04:28:36.438656+00:00", "lang": "en", "topics": ["ai-infrastructure"], "entities": ["China Mobile", "Hengtong Optic-Electric", "Shanghai Securities News"], "alternates": {"html": "https://wpnews.pro/news/chinese-team-builds-first-commercial-3-lane-highway-in-optical-fibre-to-boost", "markdown": "https://wpnews.pro/news/chinese-team-builds-first-commercial-3-lane-highway-in-optical-fibre-to-boost.md", "text": "https://wpnews.pro/news/chinese-team-builds-first-commercial-3-lane-highway-in-optical-fibre-to-boost.txt", "jsonld": "https://wpnews.pro/news/chinese-team-builds-first-commercial-3-lane-highway-in-optical-fibre-to-boost.jsonld"}}