- Expectation for Future Long-Distance High-Capacity Optical Communication Infrastructure - May 29, 2025 (Japanese version released on April 24, 2025) National Institute of Information and Communications Technology Sumitomo Electric Industries, Ltd. Highlights The world's first successful petabit-class transmission over more than 1,000 km using standard 19-core optical fiber, achieving a transmission rate of 1.02 petabits per second over a distance of 1,808 km. Achieved using a newly developed s...