TransOcean Undersea Cable Network Completes Pacific Segment: Cross-Pacific Latency Reduced by 60%
The Google-Meta joint venture TransOcean undersea cable has completed its Pacific segment using hollow-core fiber technology, reducing cross-Pacific data transmission latency from 120ms to 48ms.
TransOcean Undersea Cable Network Completes Pacific Segment
On February 13, 2028, the TransOcean undersea cable project, jointly funded by Google and Meta, announced completion of its Pacific segment. Running from Oregon, USA to Ibaraki Prefecture, Japan — approximately 9,000km — the cable uses UK-based Lumenisity's hollow-core fiber technology.
Hollow-core fiber transmits light signals through air rather than glass, reducing cross-Pacific latency from approximately 120 milliseconds to 48 milliseconds — a 60% reduction. Bandwidth capacity is 400 terabits per second, roughly 30% of existing total trans-Pacific cable capacity.
The cable will begin commercial operations in April 2028, initially serving cloud computing and real-time communications. Google and Meta each receive 40% of capacity, with the remaining 20% available for third-party leasing.
Japan's Ministry of Internal Affairs welcomed the cable as strengthening Asia-Pacific digital infrastructure resilience. Environmental organizations have raised concerns about marine ecosystem impacts; TransOcean has pledged $5 million for coral reef restoration along the route.
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