ZTE has reached a milestone in long-distance optical networking, delivering data at 400 Gbps over more than 3,000 miles without the use of repeaters. The test -- which puts ZTE in league with rivals such as Alcatel-Lucent, Ciena, Fujitsu and Huawei, who are moving forward with their own pioneering long-distance optical platforms -- relied on WDM technology and 25 reconfigurable optical add-drop multiplexers to deliver data over a single-mode fiber link.

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