13.5 billion people can simultaneously talk through a fiber

On February 4, 2017, Wuhan Post and Telecommunication Research Institute announced, in China, it's the first time to achieve 560Tb/s ultra-large capacity wavelength division multiplexing andspace division multiplexing optical transmission system experiment , which can achieve 6.75 billion pairs of people(135 million people) simultaneously talk through a fiber,which made China to anew level in the optical communication system research of ultra-large capacity, Ultra-long-distance and high speed.

With the rapid development of mobile Internet, cloud computing and big data, the surge of traffic has brought great challenges to the information and communication network. The solution to theproblem of "spurt-of-growth" of network data flow is becoming the competitive heights of the global information and communication field.