In this experiment, the world record was achieved for the transmission capacity of an optical fiber with a standard cladding diameter, and the world's longest transmission distance was achieved among transmission experiments with a capacity of 1 petabit per second or more. This result shows the possibility of significantly reducing the power consumption of MIMO digital signal processing in transoceanic systems, compared to multi-mode fiber transmission. This fiber technology will contribute to the realization of future long-distance and large-capacity optical communication networks.

The results of this experiment were accepted as a post-deadline paper presentation at the 46th Optical Fiber Communication Conference (OFC 2023) and presented on Thursday, March 9, 2023. The article is titled "Randomly Coupled 19-Core Multi-Core Fiber with Standard Cladding Diameter."

Research on advanced optical fibers has attracted considerable attention to address ever-increasing traffic demands. NICT has achieved transmission capacities of 1.02 petabits per second for a standard cladding diameter uncoupled multi-core fiber, 1.53 petabits per second for a multi-mode fiber, and 0.17 petabits per second for a randomly coupled multi-core fiber.