400ZR Pluggable Modules Test

Solution Briefs

Flexible and Cost-efficient Data Center Interconnect and Metro Networks

With 6G approaching, the spreading of AI in all domains, there are no clairvoyant abilities needed to foresee that the data center traffic won’t stop increasing any time soon. Datacenter interconnect (DCI) networks become critical not only for backup/recovery purposes but also to connect computing resources spread over different locations. As the transmission reach of traditional direct detect PAM4 transmission is limited to 10km at 400 Gbps, an alternative to the expensive transport network is required to connect switches located in different data centers.

Coherent optical technology has been impractical for use in shorter distances such as DCIs for a long time mainly because of their prohibitive cost but also because their proprietary design prevents interoperability between different vendors' modules. However, standards such as 400ZR and 400GBASE-ZR, developed by the Optical Internetworking Forum (OIF), enable coherent optical technology to move to data center interconnects. IEEE prepares with 802.3cw an implementation agreement for coherent DCIs.

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400ZR Pluggable Modules Test

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