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Polarization Mode Emulators and Polarization Mode Dispersion Compensators Based on Optical Polarization Rotators with Discrete Polarization States

  • US 20100239245A1
  • Filed: 03/22/2010
  • Published: 09/23/2010
  • Est. Priority Date: 03/21/2009
  • Status: Abandoned Application
First Claim
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1. An optical device, comprising:

  • a plurality of differential group delay (DGD) segments each exhibiting optical birefringence to effectuate a DGD between light of two orthogonal polarizations that transmits through each DGD segment, the DGG segments arranged along an optical path and separated from each other along the optical path;

    a plurality of tunable optical polarization rotators respectively located in gaps between the DGD segments, one tunable optical polarization rotator per gap to rotate polarization of light after exiting one DGD segment and before entering a downstream DGD segment, each tunable optical polarization rotator responsive to a control signal to produce three different polarization rotations; and

    a control module in communication with the tunable optical polarization rotators to individually control each of the optical polarization rotators to produce one of the three different polarization rotations to produce polarization mode dispersion of a first order and one or more higher orders on the light that transmits through the DGD segments and the tunable optical polarization rotators.

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