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Methods and apparatus for constructing large wavelength selective switches using parallelism

  • US 8,737,776 B2
  • Filed: 03/11/2013
  • Issued: 05/27/2014
  • Est. Priority Date: 03/05/2008
  • Status: Active Grant
First Claim
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1. An optical network node, comprising:

  • at least two multi-degree reconfigurable optical add/drop modules (ROADMs), each ROADM including a wavelength-selective switch (WSS), the WSS including multiple parallel non-cascaded sub-WSSs; and

    intra-network node paths configured to interconnect the at least two ROADMs to enable a given ROADM to direct optical signals received at the given ROADM to any other interconnected ROADM.

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