wiredinUSA June 2014

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Lionel Lee, Ezra’s group CEO and MD

400G long-haul field trial

Subsea contract scoop

Ezra Holdings Ltd has won contracts around the world and across its subsea services and offshore support services divisions worth over $95 million. Ezra’s subsea services armEMAS AMChas a variety of cable lay and subsea installation contracts in the North Sea and Gulf of Mexico, including one of the longest HVAC cable lays in the world – 160km. The group’s offshore support services arm EMASMarine has several contracts in Africa and Asia, with an aggregate value of more than $55 million. Under these contracts, EMAS Marine will be deploying one anchor handling tug and supply (AHTS) and two platform supply vessels (PSV) in Africa, and another five AHT/AHTS and one PSV in Asia. “I am delighted that our core divisions are strengthening their presence in all our target markets,” said Mr Lionel Lee, Ezra’s group CEO and MD. “The projects that EMAS AMC is winning are growing in quality and complexity, which is a recognition of how far we have developed our subsea engineering capabilities.”

Tata Communications, Huawei and Huawei Marine have revealed the successful completion of a 400G field trial on a subsea network over 6,000km. The test results demonstrated an optical transmission of 400G signals, believed to be 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), a 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. Mr Hon Kit Lam, vice president, international transmission and IP business, Tata Communications, said: “The 400G technology of Huawei and Huawei Marine demonstrates that our existing subsea network asset is capable of supporting future, next-generation transmission technology as shown in the 400G trial.”

ASIA / AFRICA NEWS

wiredInUSA - June 2014

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