Underwater Internet Cable Set to Revolutionize Global Data Transfer Speeds in 2029
A new underwater internet cable is set to revolutionize global data transfer speeds when it goes live in 2029, enabling data transmission at a staggering 1 million gigabits per second.

A new underwater internet cable is set to revolutionize global data transfer speeds when it goes live in 2029. The Petal cable, stretching an impressive 4,300 miles across the ocean floor from the US to France, will enable data transmission at a staggering 1 million gigabits per second.
This unprecedented speed means that a massive amount of data can be transferred simultaneously - approximately 125 terabytes every second, equivalent to around 25,000 high-definition movies. This capacity is not only significantly higher than current subsea cables but also sufficient to support the streaming needs of nearly three-quarters of the world's population at once.
The Petal cable will utilize a cutting-edge technology called multi-core fiber, which involves two cores within each strand carrying optical signals in opposite directions. This innovative approach allows for double the capacity of traditional single-core fibers, making it an essential component of the high-speed data transfer system.
This advanced technology is set to be used commercially for the first time with Petal's launch, marking a significant milestone in the development of underwater internet infrastructure.
The new internet cable, dubbed Petal, will be comprised of 24 pairs of dual-core fibers, totaling 96 individual fiber cores. Each fiber strand is incredibly thin, measuring just 125 micrometers in diameter, roughly the width of a human hair.
The construction and design of Petal have been entrusted to Japanese technology company NEC, with Sumitomo Electric providing the specialized fiber for the project. This collaboration marks an important step towards realizing the ambitious goals set out by Meta engineers.
Achieving petabit-per-second capacity across such vast distances is considered a significant technological breakthrough in global telecommunications, according to Eduardo Mateo, chief strategy officer of NEC's Submarine Networks Division. This achievement has far-reaching implications for the world's internet infrastructure.
Subsea cables form the backbone of internet connectivity, carrying around 99% of all global internet traffic, as stated by the International Telecommunication Union, a UN agency responsible for digital technologies. The sheer scale and complexity of installing these cables on the ocean floor pose significant engineering challenges.
The complex process of amplifying optical signals along subsea cables requires specialized equipment known as repeaters or amplifiers.
These devices use lasers to boost signal strength at regular intervals along the cable, ensuring the data remains intact and strong throughout its journey.
A typical 4,300-mile subsea cable would need around 100 of these repeaters to amplify the signals effectively, according to Meta's representatives.
The sheer scale of this engineering challenge is a testament to the massive undertaking that installing such cables on the ocean floor represents.
The new internet cable is set to revolutionize global connectivity by transporting data at an astonishing 1 million gigabits per second, making it one of the fastest and most reliable means of transmitting information across vast distances. This remarkable feat of engineering will enable seamless communication between continents, facilitating international collaboration, trade, and innovation.
This undertaking has pushed the boundaries of what is thought possible in cable-laying technology, with the sheer scale of the project serving as a testament to human ingenuity and determination. The cable's enormous length and speed make it an unparalleled achievement in modern telecommunications, promising to transform the way people communicate and conduct business globally.
Facts based on reporting originally published by Live Science.
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