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Optical Coupling Using Polarization Beam Displacer

  • US 20160377811A1
  • Filed: 05/24/2016
  • Published: 12/29/2016
  • Est. Priority Date: 06/25/2015
  • Status: Active Grant
First Claim
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1. An optical coupling apparatus for coupling an optical fiber to a photonic chip, comprising:

  • a collimating microlens for collimating light from the optical fiber;

    a polarization splitting beam displacer for separating the light collimated by the collimating microlens into orthogonally polarized X and Y component beams;

    at least one focusing microlens for directing the X and Y component beams separately onto the photonic chip; and

    first and second surface grating couplers (SGCs) orthogonally disposed on the photonic chip and configured for operation in a same polarization state, for coupling the X and Y component beams, respectively, to the photonic chip.

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