China Mobile led the development and application of 100G high-speed optical communication technology. As early as in 2012, it proposed the strategy of 'crossing 40G and introducing 100G' to promote technology maturity one year ahead of schedule. It is the first to achieve 100G and OTN scale application and build the world's largest commercial scale in the industry. Network. Afterwards, China Mobile carried out research on ultra-100G technology: In 2014, it cooperated with Huawei, ZTE, Fiberhome, and Shanghai Bell to complete the first pilot test of the current 100G network in China; and in 2017 it took the lead in realizing the 100G of single-carrier 200G. Commercial, and start single-carrier 400G ultra 100G research and verification work.
The single-carrier 400G is the next-generation key technology for high-speed optical transport networks, which can further extend the transmission network bandwidth and reduce the transmission cost per bit. Currently, single-carrier 400G has a variety of coding and modulation methods, and it is urgent to verify key indicators to promote the development of standards. In addition, the ultra-low loss large effective area fiber can increase the transmission distance of the system. It usually takes 2 to 3 years from the feasibility study to the completion of the construction of the fiber optic cable. It is also necessary to verify the transmission performance improvement of the single-carrier 400G in the new optical fiber scenario as soon as possible. China Mobile is committed to promoting the standardization of key technologies and cohesion of the industry. It is the first to launch a single-carrier 400G system laboratory test in China.
This test focuses on the verification and validation of the physical interfaces of the 400G system technology with different coding formats, key switching indicators such as protection switching, single board power consumption, and multiple spans of the two fiber types G.652 and G.654E. Single-span system indicators and transmission costs, and verified the performance of the 100G/400G mixed-transmission system, laid the foundation for the standardization and commercial deployment of single-carrier 400G technology. It is China Mobile that leads and promotes the ultra-100G technology from the laboratory to the scale. An important part of the business. During the test period, the performance of the vendor's test equipment was stable, indicating that the single-carrier 400G technology has taken a key step towards mature commercial applications.