Huawei said its 400G field trial on a subsea network over 6000 km for Tata Communications showed an optical transmission of 400G signals.
Achieving an optical transmission of 400G signals, an industry-first for a submarine cable system of this length, Huawei and Huawei Marine’s technical solution adopted the modulation format of Dual Carrier Polarisation Division Multiplexing Quadrature Phase Shift Keying (DC-PDM-QPSK), clock recovery technology and Soft Decision Forward Error Correction (SD-FEC) technology to address the problems of high-speed signal distortion and unstable clocks.
The 400G field trial over a long-haul system has showed that advanced subsea transmission technology continues to address the future needs of their customers.
Hon Kit Lam, vice president, International Transmission and IP business, Tata Communications said: “The 400G technology of Huawei & Huawei Marine demonstrates that our existing subsea network asset is capable of supporting future, next-generation transmission technology as shown in the 400G trial.”
