POLARIZATION DIVERSITY OPTICAL INTERFACE ASSEMBLY
First Claim
1. A polarization diversity optical interface assembly comprising:
- a single mode optical fiber;
first and second grating couplers disposed on a substrate, the first and second grating couplers coupled to first and second waveguides, respectively; and
an optical connector to couple light between the single mode optical fiber and each of the first and second grating couplers, the optical connector comprising a ferrule and a walk-off crystal, the ferrule coupled to a portion of the single mode optical fiber, the walk-off crystal to one or both of spatially separate light from the single mode optical fiber into first and second orthogonal polarization modes prior to passing through the respective first and second grating couplers or combine first and second polarization modes of light from the first and second grating couplers prior to passing through the single mode optical fiber.
1 Assignment
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Accused Products
Abstract
Examples herein relate to polarization diversity optical interface assemblies including a single mode optical fiber and first and second grating couplers disposed on a substrate. The first and second grating couplers are coupled to first and second waveguides, respectively. The assemblies further includes an optical connector to couple light between the single mode optical fiber and each of the first and second grating couplers. The optical connector includes a ferrule and a walk-off crystal. The ferrule is coupled to a portion of the single mode optical fiber. The walk-off crystal is configured to spatially separate the light into first and second orthogonal polarization modes prior to passing through the respective first and second grating couplers and/or combine the first and second polarization modes of the light prior to passing through the single mode optical fiber.
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Citations
20 Claims
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1. A polarization diversity optical interface assembly comprising:
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a single mode optical fiber; first and second grating couplers disposed on a substrate, the first and second grating couplers coupled to first and second waveguides, respectively; and an optical connector to couple light between the single mode optical fiber and each of the first and second grating couplers, the optical connector comprising a ferrule and a walk-off crystal, the ferrule coupled to a portion of the single mode optical fiber, the walk-off crystal to one or both of spatially separate light from the single mode optical fiber into first and second orthogonal polarization modes prior to passing through the respective first and second grating couplers or combine first and second polarization modes of light from the first and second grating couplers prior to passing through the single mode optical fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An optical connector to couple light between a single mode optical fiber and single polarization first and second grating couplers, the optical connector comprising:
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a ferrule to couple to a portion of a single mode optical fiber; a walk-off crystal in contact with a portion of the ferrule to spatially separate light into first and second orthogonal polarization modes when the light is emitted through the single mode optical fiber from an optoelectronic device coupled to the single mode optical fiber, the first and second orthogonal polarization modes to be passed to the respective single polarization first and second grating couplers; and a lens to collimate the light prior to passing through the walk-off crystal when the light is emitted through the single mode optical fiber from the optoelectronic device. - View Dependent Claims (13, 14, 15)
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16. A method of coupling light between a single mode optical fiber and single polarization first and second grating couplers, the method comprising:
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coupling a single mode optical fiber to a ferrule; emitting light from an optoelectronic device through the single mode optical fiber; passing the light through a walk-off crystal such that the light is spatially separated into first and second orthogonal polarization modes prior to entering respective single polarization first and second grating couplers disposed on a substrate; and passing the first and second orthogonal polarization modes through the respective single polarization first and second grating couplers after the light is spatially separated into the first and second orthogonal polarization modes by the walk-off crystal. - View Dependent Claims (17, 18, 19, 20)
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Specification