Stacked photonic chip coupler for SOI chip-fiber coupling
First Claim
1. An optical coupler for coupling a photonics chip to an optical fiber, comprising:
- a photonic chip comprising a nano-sized photonic waveguide having a width of less than one micrometer, a photonic optical diffraction surface grating in a plane of the photonic chip, and a first cladding covering the photonic waveguide and the photonic optical diffraction surface grating; and
an optical coupling chip comprising a micron-sized coupling waveguide and a coupling optical diffraction surface grating embedded in a first coupling cladding and on a second coupling cladding, wherein the first coupling cladding of the optical coupling chip is connected to the first cladding of the photonic chip, wherein the optical coupling chip is configured to couple to light transmitted between the photonic chip and an optical fiber,wherein the photonic chip and the optical coupling chip are configured such that a direction of propagation of light traveling between the coupling optical diffraction surface grating and the optical fiber is in a plane of the optical coupling chip.
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Accused Products
Abstract
Embodiments are provided for an optical coupler created by bonded photonic chip coupler for Silicon-on-Insulator (SOI) chip-fiber coupling. System and apparatus embodiments for a bonded photonic chip coupler for SOI chip-fiber coupling provide for reduced mismatch between fiber and chip, increased coupling efficiency, and lower photonics device insertion loss. In an embodiment, an optical coupler for coupling a photonics chip to an optical fiber includes a photonic chip comprising a nano-sized photonic waveguide, photonic optical diffraction surface grating, and a first cladding covering the photonic waveguide and the photonic grating; and an optical coupling chip comprising a micron-sized coupling waveguide and a coupling optical diffraction surface grating embedded in a first coupling cladding and on a second coupling cladding, wherein the first coupling cladding is connected to the first cladding, wherein the optical coupling chip is configured to couple to light transmitted between the photonic chip and an optical fiber.
41 Citations
33 Claims
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1. An optical coupler for coupling a photonics chip to an optical fiber, comprising:
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a photonic chip comprising a nano-sized photonic waveguide having a width of less than one micrometer, a photonic optical diffraction surface grating in a plane of the photonic chip, and a first cladding covering the photonic waveguide and the photonic optical diffraction surface grating; and an optical coupling chip comprising a micron-sized coupling waveguide and a coupling optical diffraction surface grating embedded in a first coupling cladding and on a second coupling cladding, wherein the first coupling cladding of the optical coupling chip is connected to the first cladding of the photonic chip, wherein the optical coupling chip is configured to couple to light transmitted between the photonic chip and an optical fiber, wherein the photonic chip and the optical coupling chip are configured such that a direction of propagation of light traveling between the coupling optical diffraction surface grating and the optical fiber is in a plane of the optical coupling chip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A network component configured for transmitting, receiving, and switching optical signals, the network component comprising:
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an input/output (I/O) component for receiving and transmitting signals to other network components; and an optical processing element coupled to the I/O component, wherein the optical processing element comprises; a photonic chip comprising a nano-sized photonic waveguide having a width of less than one micrometer, photonic optical diffraction surface grating in a plane of the photonic chip, and a first cladding covering the nano-sized photonic waveguide and the photonic optical diffraction surface grating; and an optical coupling chip comprising a micron-sized coupling waveguide and coupling optical diffraction surface grating embedded in a first coupling cladding and on a second coupling cladding, wherein the first coupling cladding is connected to the first cladding, wherein the optical coupling chip is configured to couple to light transmitted between the photonic chip and an optical fiber, wherein the photonic chip and the optical coupling chip are configured such that a direction of propagation of light traveling between the coupling optical diffraction surface grating and the optical fiber is in a plane of the optical coupling chip. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for fabricating a photonic chip coupler for silicon-on-insulator (SOI) chip-fiber coupling, comprising:
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fabricating a silica chip comprising a first cladding, a micron-sized silica waveguide, a silica grating, and a second cladding, wherein the silica chip comprises a silica on silicon chip, and wherein the micron-sized silica waveguide comprises an interface to connect to an optical fiber; fabricating a photonic integrated circuit (PIC), wherein the PIC comprises a nano-sized PIC waveguide having a width of less than one micron and a PIC optical diffraction surface grating covered by a top cladding, wherein the PIC comprises a silicon on insulator (SOI) chip; and connecting the first cladding of the silica chip to the top cladding of the PIC to produce a photonic chip coupler, wherein the silica chip and the PIC are configured such that a direction of propagation of light traveling between the micron-sized silica waveguide and the optical fiber is in a plane of the silica chip. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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Specification