Huawei discussed its vision for Submarine-Terrestrial Synergy and Optical-Intelligent Orchestration at this week’s Submarine Networks World 2025 in Singapore. The company introduced a solution and flagship products designed to integrate submarine and terrestrial networks, moving beyond the siloed approach that has historically isolated resources and limited interoperability.
At the event, Huawei showcased the OptiX OSN 9800 K series, which it called the industry’s first DC-oriented 100T submarine-terrestrial integrated platform. The company also presented its latest 1.6T submarine SLTE board, designed to extend network performance and reach.
• OptiX OSN 9800 K series integrates submarine and terrestrial networks in one platform
• Capacity: 4T per slot, up to 100T+ per chassis, and 96T per fiber
• Energy efficiency: 0.1 W/Gbit, 65% lower than the industry average
• Intelligence: digital twin-based O&M, replacing reactive responses with proactive operations, improving efficiency by 40%
• New 1.6T submarine SLTE board: adjustable from 300G to 1.6T, supporting distances up to 11,000 km
“Huawei plans to build an integrated submarine-terrestrial network architecture featuring ultra-broadband, high reliability, agile and intelligence, so as to enable seamless transmission while significantly enhancing network O&M efficiency and service quality through intelligence,” said Gavin Gu, President of Huawei’s Optical Transmission Domain.
🌐 Analysis: Huawei has released only limited details on its new submarine-terrestrial integration approach, but other available information provides some context. The OptiX OSN 9800 K series has been marketed as Huawei’s next-generation high-capacity OTN platform, designed for data-center and backbone applications with per-slot throughput up to 1.6T and scaling toward 100T per chassis. Public product documents also point to features such as extended C-band support for submarine scenarios and strong focus on energy efficiency. The newly introduced 1.6T SLTE board emphasizes adjustable rate flexibility and ultra-long-haul reach, positioning Huawei to compete with other subsea vendors advancing coherent optical technology for transoceanic links.
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