Optical Coupling Using Polarization Beam Displacer
First Claim
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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Accused Products
Abstract
An optical coupling apparatus for coupling an optical fiber to a photonic chip is described. The apparatus includes 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.
46 Citations
21 Claims
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1. An optical coupling apparatus for coupling an optical fiber to a photonic chip, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for coupling light between an optical fiber and a photonic chip, comprising:
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collimating light from the optical fiber to obtain collimated light; separating the collimated light into orthogonally polarized X and Y component beams; directing the X and Y component beams separately onto the photonic chip; and coupling the X and Y component beams to the photonic chip respectively by first and second surface grating couplers (SGCs) orthogonally disposed on the photonic chip and configured for operation in a same polarization state. - View Dependent Claims (19, 20, 21)
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Specification