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Systems and methods for optical switching to colorless ports and colored ports

  • US 7,212,704 B2
  • Filed: 10/12/2005
  • Issued: 05/01/2007
  • Est. Priority Date: 10/12/2004
  • Status: Expired due to Fees
First Claim
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1. An apparatus comprising:

  • an input port for launching an input signal including a plurality of wavelength channels;

    an input dispersive element for demultiplexing the input signal into wavelength channels;

    at least one colourless output port, each colourless output port for outputting a respective multiplexed output signal containing a combination of all wavelength channels switched to that colourless output port;

    at least one output dispersive element, each outgoing dispersive element for multiplexing the wavelength channels switched to a respective colourless output port into a respective multiplexed output signal;

    a plurality of coloured output ports, each for outputting only a respective predetermined demultiplexed wavelength channel switched to that coloured output port;

    an optical element associated with the plurality of coloured output ports;

    a wavelength selective arrangement adapted to selectively switch each of the plurality of wavelength channels of the input signal to a respective one of;

    a) the at least one output dispersive element for multiplexing the selected wavelengths, and directing the multiplexed output signal to a selected colourless output port;

    b) the optical element, which then routes the demultiplexed wavelength to the coloured output port of the plurality of coloured output ports that outputs that wavelength.

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