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SWDM4: Shortwave wavelength division multiplexing

The Lowest Total Cost Solution for 40G/100G in the Enterprise Data Center - a Whitepaper


SWDM4 IS The Lowest Total Cost Solution for 40G/100G in the Enterprise Data Center. Why?

SWDM4 is a new multi-vendor technology that promises to provide the lowest total cost solution for enterprise data center upgrades to 40G and 100G Ethernet, by enabling the use of the existing 10G duplex OM3/OM4 multimode fiber infrastructure. It also enables a cost-effective approach to increasing bandwidth density for new data center builds, as well as extending the reach when used with OM5 wideband multimode fiber.

Written by Christian Urricariet from Finisar, one of the founding members of the SWDM Alliance, this whitepaper discusses how to leverage existing fiber infrastructure for Data Center upgrades whilst maintaining the same supported link distances as 10G Ethernet through the use of SWDM4.

Topics include: 

  • Transitioning from 10G Ethernet to 40G & 100G
  • Increasing bandwidth density and extending reach in Data Center upgrades and new builds
  • Use Cases for SWDM4
  • CapEx Benefits
  • Operational Advantages of SWDM4 versus BiDi solutions
Christian Urricariet Finisar

Christian Urricariet is Senior Director of Global Marketing at Finisar. Finisar is the first optical transceiver vendor to complete reliability testing and production release of both 40G and 100G SWDM4 QSFP transceivers, which meet or exceed SWDM MSA specifications.


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For advice on how to upgrade your data center today, contact one of our Pre-Sales Technical Engineers now. We also have a Use Case on SWDM4 here.

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