
Tata Communications has conducted a 400G field trial on a subsea network over 6000 km.
The test, which was conducted in partnership with Huawei and Huawei Marine, 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),...