Such capacity would allow for simultaneous phone calls by 4.8 billion people and the transmission of 40,000 blue-ray high definition movies (10 gigabytes per movie) in one second, according to FiberHome which is based in Wuhan, the provincial capital of central China's Hubei Province.
This breaks the the world record for the amount of data that can be transmitted on optic fibres.
The transmission of 400 terabytes of data is accomplished on multi-core mono-mode optic fibre, which can be simply understood as breaking down the fibre into multiple paths to enhance transmission capacity, state-run Xinhua news agency quoted company's technicians as saying.