Beam turning assembly with polarization splitter
First Claim
1. An optical beam-turning assembly, comprising:
- a first reflecting region positioned at an end of an optical fiber, the first reflecting region including a polarization-sensitive reflector configured to selectively reflect a first polarization of light emanating from the optical fiber into a first reflected beam, the first reflecting region also configured to transmit light emanating from the optical fiber that is not of the first polarization, the first reflected beam directed toward a first optical grating coupler on a chip;
a spacer layer disposed on the first reflecting region such that light transmitted from the first reflecting region enters and passes through the spacer layer; and
a second reflecting region disposed on the spacer layer, the second reflecting region configured to reflect light that is incident upon the second reflecting region into a second reflected beam, the second reflected beam directed toward a second optical grating coupler on the chip,wherein a thickness of the spacer layer is set to control a separation distance between the first reflected beam and the second reflected beam.
1 Assignment
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Accused Products
Abstract
A first reflecting region is positioned at an end of an optical fiber and includes a polarization-sensitive reflector configured to selectively reflect a first polarization of light emanating from the optical fiber into a first reflected beam and transmit light that is not of the first polarization. The first reflected beam is directed toward a first optical grating coupler on a chip. A spacer layer is disposed on the first reflecting region such that light transmitted from the first reflecting region enters and passes through the spacer layer. A second reflecting region is disposed on the spacer layer and is configured to reflect light that is incident upon the second reflecting region into a second reflected beam directed toward a second optical grating coupler on the chip. A thickness of the spacer layer is set to control a separation distance between the first reflected beam and the second reflected beam.
16 Citations
26 Claims
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1. An optical beam-turning assembly, comprising:
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a first reflecting region positioned at an end of an optical fiber, the first reflecting region including a polarization-sensitive reflector configured to selectively reflect a first polarization of light emanating from the optical fiber into a first reflected beam, the first reflecting region also configured to transmit light emanating from the optical fiber that is not of the first polarization, the first reflected beam directed toward a first optical grating coupler on a chip; a spacer layer disposed on the first reflecting region such that light transmitted from the first reflecting region enters and passes through the spacer layer; and a second reflecting region disposed on the spacer layer, the second reflecting region configured to reflect light that is incident upon the second reflecting region into a second reflected beam, the second reflected beam directed toward a second optical grating coupler on the chip, wherein a thickness of the spacer layer is set to control a separation distance between the first reflected beam and the second reflected beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for turning light from an optical fiber into a chip, comprising:
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placing a first reflecting region at an end of the optical fiber, the first reflecting region including a polarization-sensitive reflector configured to selectively reflect a first polarization of light emanating from the optical fiber into a first reflected beam, the first reflecting region also configured to transmit light emanating from the optical fiber that is not of the first polarization, the first reflected beam directed toward a first optical grating coupler on the chip; placing a spacer layer on the first reflecting region such that light transmitted from the first reflecting region enters and passes through the spacer layer; placing a second reflecting region on the spacer layer, the second reflecting region configured to reflect light that is incident upon the second reflecting region into a second reflected beam, the second reflected beam directed toward a second optical grating coupler on the chip; and using a thickness of the spacer layer to control a separation distance between the first reflected beam and the second reflected beam.
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17. An optical assembly, comprising:
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a base structure configured to receive an optical fiber, the base structure configured to align an axis of a core of the optical fiber in a prescribed direction; and an angled reflector spatially indexed to the base structure, the angled reflector positioned to receive light from the core of the optical fiber, the angled reflector configured to reflect a first polarization of the received light as a first reflected beam toward a first optical coupling site on a photonic chip, the angled reflector configured to reflect a second polarization of the received light as a second reflected beam toward a second optical coupling site on the photonic chip. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A method for turning light from an optical fiber into a chip, comprising:
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intercepting a beam of light emanating from an optical fiber with a first angled reflector, wherein the first angled reflector is configured and oriented to reflect a first polarization of the beam of light into a first reflected beam, such that the first reflected beam is directed toward a first optical coupling site on a photonic chip, and wherein the first angled reflector is configured to allow transmission of a portion of the beam of light that is not of the first polarization through the first angled reflector; and intercepting the portion of the beam of light that is transmitted through the first angled reflector with a second angled reflector, wherein the second angled reflector is configured and oriented to reflect the portion of the beam of light that is incident upon the second angled reflector into a second reflected beam, such that the second reflected beam is directed toward a second optical coupling site on the photonic chip.
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Specification