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Several vendors are shipping 800Gbps capable coherent optical solutions, and now the industry must consider the next steps in development. OFC2021 was filled with updates about the performance and value of existing 96Gbaud approaches, but the motivation for building even faster solutions was lacking. Key points included:

  • Beyond 800Gbps is not compelling for Cloud operators yet.
  • 800ZR will be the highest volume “Beyond 100GBaud” solution.
  • Will Microsoft spend more on 400ZR than actual WDM hardware?
  • ADVA causes confusion with dual-subcarrier 800G announcement
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