Distinct dispersion compensation for coherent channels

CAFC
  • US 8,380,068 B2
  • Filed: 09/30/2010
  • Issued: 02/19/2013
  • Est. Priority Date: 10/27/2009
  • Status: Active Grant
First Claim
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1. An optical assembly comprising:

  • an input optical port for receiving a mixed optical signal containing a combination of coherent optical wavelength channels and non-coherent optical wavelength channels;

    an optical demultiplexer configured to separate the combination of optical wavelength channels present on the input optical port such that a plurality of coherent optical wavelength channels and no non-coherent optical wavelength channels are provided onto a coherent optical path, and such that a plurality of non-coherent optical wavelength channels and no coherent optical wavelength channels are provided onto a non-coherent optical path;

    a dispersive element disposed in one or both of the coherent and non-coherent optical paths and that operates such that a different amount of dispersion is applied to the plurality of non-coherent optical wavelength channels traveling through the non-coherent optical path than the amount of dispersion, if any, that is applied to the coherent optical path; and

    an optical multiplexer configured to receive and combine the optical wavelength channels from the coherent and non-coherent optical paths to form a mixed coherent and non-coherent optical output signal on an output of the optical multiplexer.

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