简体中文(中国) 
HMN Tech announced the completion of manufacturing and factory acceptance tests for the Trans-Caspian Fiber Optic project, the world‘s first submarine cable system crossing the Caspian Sea, with all wet plant equipment now ready for shipment. The project targets Q4 2026 commercial service.
The 380-kilometer Trans-Caspian Fiber Optic project is jointly invested by AzerTelecom (Azerbaijan) and Kazakhtelecom (Kazakhstan) and built by HMN Tech, connecting Aktau in Kazakhstan and Sumgait in Azerbaijan, creating a direct digital artery between the two countries and providing a new strategic corridor for Eurasia data traffic.
With a design capacity exceeding 448 Tbps using HMN Tech’s industry‑leading 32‑fiber‑pair high‑performance submarine cable and 32‑fiber‑pair remote optically pumped amplifiers (ROPA), the Trans-Caspian Fiber Optic cable system will deliver a 3.7‑millisecond round‑trip latency between Azerbaijan and Kazakhstan – the lowest possible path across the Caspian. Commercial service is targeted for the fourth quarter of 2026.
Strategic Bypass: A Third Eurasia Corridor Emerges
The Caspian Sea cable creates a completely new digital route that connects Europe, the South Caucasus, Central Asia and beyond, while offering a third option alongside the traditional Red Sea‑Egypt‑Mediterranean path and the northern terrestrial routes across Russia. For data travelling between China and Europe via Central Asia, the Caspian crossing replaces lengthy terrestrial detours with a high‑capacity, low‑latency submarine link, significantly reducing hop counts and improving reliability.
The Trans-Caspian Fiber Optic project is particularly timely as the AI boom drives exponential growth in cross‑border data flows. Token‑intensive applications – including AI inference, agent‑based collaboration, real‑time training data exchange and distributed compute orchestration – require stable, high‑throughput, low‑jitter connectivity that legacy overland routes often cannot guarantee. By providing a dedicated, carrier‑neutral subsea backbone across the Caspian, the new cable directly supports:
- Cross‑border compute scheduling between AI clusters in Europe, the Caucasus and Central Asia
- High‑density token transport for large language model (LLM) inference and fine‑tuning workloads
- Resilient peering for cloud providers, hyperscalers and research networks expanding into the Caspian region
Engineering Against the Caspian’s Challenges
As the world‘s largest inland body of water, the Caspian Sea presents unique engineering difficulties: variable salinity, shallow coastal zones, seismic activity and extreme seasonal weather. HMN Tech deployed a customised end‑to‑end solution featuring heavily armoured cables with enhanced tensile strength, abrasion resistance and water‑pressure tolerance to withstand the basin’s complex seabed topography and anchor hazards.
The supplier also applied its global subsea installation experience to design an efficient deployment plan, optimising cable‑laying vessel schedules and construction processes to accelerate time‑to‑service while maintaining strict quality and safety standards.
“We are honoured to work with our customers to build this ultra‑high‑capacity, high‑speed, reliable Caspian Sea cable system, jointly creating a new Eurasia digital information corridor,” said Ma Yanfeng, Senior Vice President of HMN Tech. “Facing the global wave of digital and intelligent transformation, HMN Tech will continue to accelerate technology innovation, optimise end‑to‑end, full‑scenario submarine communication solutions, and support AI industry collaboration and global compute interconnection with high‑performance subsea backbone networks.”
Regional Impact: Beyond Connectivity
For Azerbaijan and Kazakhstan, the new Trans-Caspian Fiber Optic cable system will provide sovereign, high‑capacity international bandwidth that reduces reliance on land routes passing through third countries. It also supports the development of regional data centre hubs and AI‑ready digital infrastructure under their respective “Digital Azerbaijan” and “Digital Kazakhstan” strategies.
More broadly, the Caspian Sea cable contributes to a multiply resilient Eurasia network architecture, complementing:
- Existing Trans‑Caspian terrestrial fibre routes (which suffer from higher latency and capacity constraints)
- Planned “Middle Corridor” digital initiatives linking China, Central Asia, the Caucasus and Europe
- Future Arctic and overland‑bypass projects that seek to avoid congested chokepoints such as the Red Sea or the Strait of Hormuz
With equipment now on its way and commercial launch scheduled for late 2026, the Trans-Caspian Fiber Optic cable is set to become the newest pillar of Eurasia’s AI‑ready digital backbone – and a model for future inland‑water submarine cable deployments worldwide.
