Meta Petal cable is a transatlantic subsea system designed for up to one petabit per second of capacity. The company says the roughly 7,000-kilometre route will connect the United States and France and is expected to enter service in 2029. The central engineering change is not simply a thicker cable: Petal uses 24 pairs of two-core fibre, which Meta describes as the equivalent of 48 conventional fibre pairs.
Meta Petal cable: what changed
| Route | About 7,000 km between the United States and France | Meta |
|---|---|---|
| Design capacity | Up to 1 petabit per second, or 1,000 Tbps | Meta |
| Planned service | 2029 | Meta |
| Fibre architecture | 24 pairs of two-core fibre, equivalent to 48 conventional pairs | Meta Engineering |
| System suppliers | NEC cable system; Sumitomo multicore fibre; Orange landing in France | Meta Engineering |
That distinction matters because modern subsea systems are constrained by electrical power as well as physical space. Repeaters positioned along a cable amplify the optical signal, and each additional conventional pair adds components that consume power. Meta says Petal is designed around about 100 repeaters with 96 amplifier cores in each repeater, while the power-feeding system remains within an 18-kilovolt limit.
Two-core fibre places two independent optical paths inside one cladding. In Petal, that approach doubles the number of usable cores without doubling the external number of fibre pairs. The result is a denser system that can carry more traffic using familiar cable-laying infrastructure. It also creates a more demanding manufacturing and operational problem: cores must remain sufficiently isolated, and repeaters must amplify many paths reliably for decades under the ocean.
Meta named NEC as the system supplier and Sumitomo Electric as the multicore-fibre supplier. Orange will handle the French landing. These roles matter because the headline capacity depends on an end-to-end chain: fibre manufacture, repeaters, marine installation, shore stations and the terrestrial network connected to the landing point.
One petabit per second equals 1,000 terabits per second. It is a design capacity across the cable, not an individual connection speed. Operators provision that capacity among routes, customers and services, and actual usable throughput depends on equipment, redundancy and commercial deployment. The figure is still strategically significant because AI training, inference and cloud traffic increasingly cross borders between hyperscale facilities.
For Indian enterprises, Petal is not a direct India route, but it shows where hyperscale network design is moving. More cores per cable can help cloud providers add capacity without multiplying every piece of marine infrastructure. The same economics can shape future routes that connect Europe, the Middle East and Asia, especially as data-centre clusters demand predictable high-volume links.
The timeline also deserves restraint. A 2029 service target leaves room for permitting, manufacture, marine surveys, installation and commissioning. Petal should therefore be read as a disclosed infrastructure plan with named partners and engineering specifications, not as capacity available today. Its real test will be whether the multicore architecture meets reliability, power and commercial utilisation targets once the system is operating.
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Frequently asked questions
What is the Meta Petal cable?
Petal is a planned roughly 7,000 km subsea cable linking the United States and France.
What does one petabit per second mean?
It means a design capacity of 1,000 terabits per second across the system, not a per-user speed.
When is Petal expected to launch?
Meta says the cable is expected to enter service in 2029.
Sources
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