Reconfigurable optical add-drop multiplexers with servo control and dynamic spectral power management capabilities

  • US RE42,368 E1
  • Filed: 06/15/2010
  • Issued: 05/17/2011
  • Est. Priority Date: 03/19/2001
  • Status: Active Grant
First Claim
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1. An optical add-drop apparatus comprisingan input port for an input multi-wavelength optical signal having first spectral channels;

  • one or more other ports for second spectral channels;

    an output port for an output multi-wavelength optical signal;

    a wavelength-selective device for spatially separating said spectral channels;

    anda spatial array of beam-deflecting elements positioned such that each element receives a corresponding one of said spectral channels, each of said elements being individually and continuously controllable in two dimensions to reflect its corresponding spectral channel to a selected one of said ports and to control the power of the spectral channel reflected to said selected port.

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