EllaLink at SUBOPTIC 2025
A Clockwork Network
Implementation of reliable protection over a transatlantic submarine cable with >1,000 km optical express links
Diego Matas, Rui Carrilho (EllaLink), Alan Hollander, Geoff Bennett (Nokia)
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In this paper, we explain the real-world implementation that extends the optical path of the 5,900 km EllaLink submarine cable with a 1,738 km optical express terrestrial ring.
You will see a description of the topology of the EllaLink network, the details of the protection technology, and how EllaLink overcame challenges such as optical spectrum planning with multiple digital termination points, as well as protection scheme details.