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400 Gbps Over 2 Km? Nov 27, 2017

From the new released CWDM8 MSA, it covers 400-Gbps optical transmission at distances up to 2 km over duplex single-mode fiber.

The CWDM8 MSA announced its formation this past September with an eye toward addressing 400-Gbps applications using NRZ modulation on the optical end while maintaining compatibility with 50-Gbps per lane electrical interfaces such as those the P302.3bs 400 Gigabit Ethernet Task Force envisionsDatacenter.jpg

The MSA asserts the use of NRZ modulation, already common among data center transceivers, will enable compliant modules to reach the market more quickly than those based on PAM4 or other higher-order modulation formats.