Wuhan Academy of Posts and Telecommunications: "Three Super" optical transmission achieves a new record of 200Tb / s
On the 18th, the reporter learned from the Wuhan Academy of Posts and Telecommunications that China's ultra-high-speed ultra-large-capacity ultra-long-haul optical transmission basic research has made another record, achieving 200Tb/s ultra-large-capacity WDM and D-division optical transmission, equivalent to 2.402 billion pairs. People talk at the same time on a fiber.
According to industry authorities, by 2030, global network data traffic and per capita network data traffic will increase 1000 times compared with 2010. The optical transmission network, which is the basis of the Internet and communication networks, will continue to face the pressure of carrying massive amounts of data. Network expansion is imperative. This basic research, jointly carried out by the State Key Laboratory of Optical Fiber Communication Technology and Network of Wuhan Academy of Posts and Telecommunications and Guangxun Technology, designed and prepared a small-mode fiber supporting three modes of transmission using a PCVD method with independent intellectual property rights. The DFT-S OFDM 32QAM modulation method is adopted. The experimental system also uses a 6×6 multi-input and multi-output (MIMO) digital signal processing algorithm, which effectively overcomes the crosstalk effects of the three modes and the two polarizations, and recovers the signals between the modes.
The Science and Technology Daily reported on September 20 last year that the Wuhan University of Posts and Telecommunications took the lead, and the National 973 Project, including Huazhong University of Science and Technology, Fudan University, Beijing University of Posts and Telecommunications, and Xi'an University of Electronic Science and Technology, participated in the ultra-high-speed ultra-large-capacity ultra-long-haul optical transmission. Basic research, the first time to achieve a common single-mode fiber transmission capacity of 100.23Tb / s (equivalent to 1.201 billion pairs of people talking on a single fiber) when the transmission distance exceeded 80 kilometers. This news was selected by the academicians of the two academies to comment on the top ten domestic science and technology progress news in 2014. This is another important breakthrough in the capacity index based on last year's research.
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