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Optical add/drop multiplexer with reconfigurable add wavelength selective switch

  • US 20060072918A1
  • Filed: 10/06/2004
  • Published: 04/06/2006
  • Est. Priority Date: 10/06/2004
  • Status: Active Grant
First Claim
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1. A reconfigurable WDM add/drop multiplexer operative as an add/drop node on an optical fiber carrying a plurality of WDM signals, said add/drop multiplexer comprising:

  • a coupler splitting said WDM signals on said optical fiber, said coupler having an input terminal for connection to said optical fiber, and first and second output terminals for said split WDM signals from said optical fiber;

    a demultiplexer element connected to said first coupler output terminal, said demultiplexer separating said split WDM signals at a plurality of drop terminals; and

    a wavelength-selective switch having an input terminal for connection to said second coupler output terminal, an output terminal for connection to said optical fiber, said wavelength-selective switch selectively adding WDM signals on a plurality of add terminals responsive to control signals.

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