Ciena Corporation and Colt Technology Services completed a transatlantic and terrestrial terabit network deployment that leverages Ciena’s WaveLogic 6 Extreme (WL6e) transponder.
The deployment increases capacity by 20% on a single fibre compared to earlier generation models and delivers a 50% reduction in space, power consumption, and carbon emissions.
The WL6e transponder boosts the transatlantic route across the Grace Hopper subsea cable from 450 Gbps to 1.2 Tbps—an increase of 140%—and similarly raises the capacity between Lisbon, Portugal and Madrid, Spain from 600 Gbps to 1.5 Tbps.
The technology also offers a 1.5‑fold increase in network capacity versus traditional C‑band spectrum, enabling Colt to support more simultaneous cloud‑gaming sessions and higher‑bandwidth AI workloads.
The rollout targets two unnamed hyperscale content providers that drive demand for AI content, gaming and streaming. AI workloads on transatlantic cables are projected to rise from 8% of capacity in 2025 to 30% by 2035, while content providers now consume 74% of total international bandwidth.
The network’s power and space savings align with sustainability goals and reduce operational costs for the carriers.
The deployment follows a November 2024 trial that demonstrated the first 1.2 Tbps wavelength transmission across the Atlantic Ocean, validating the technology before commercial rollout.
Ciena’s leadership in high‑speed connectivity and the commercial viability of its WaveLogic 6 Extreme technology position the company to capture additional market share and generate future revenue growth in the AI‑driven bandwidth market.
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