Tata Communications, a leading provider of a New World of Communications™, Huawei, a leading global information and communications technology (ICT) solutions provider and Huawei Marine, a global submarine cable network provider, today announced the successful completion of a 400G field trial on a subsea network over 6000 km. The test results demonstrated 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), an innovative Faster-Than-Nyquist (FTN) compensation and recovery algorithm, proprietary 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 use of such advanced technology underpins Huawei and Huawei Marine’s significant commitment to investing in research and development to meet the needs of their customers.
Tata Communications, Huawei and Huawei Marine continue to advance the boundaries of next-generation transmission technology. The successful 400G field trial over a long-haul system has demonstrated that advanced subsea transmission technology continues to address the future needs of their customers.
Mr. 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. Tata Communications constantly assesses new technology to expand our capabilities and to enhance our ability to support traffic growth demand from our customers.”