Optical waveguide coupler for whispering-gallery-mode resonators
First Claim
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1. A device, comprising:
- an optical resonator formed of an electro-optic material and shaped to support a whispering gallery mode circulating in a plane that is perpendicular to a crystal axis of the electro-optic material; and
a waveguide formed of the electro-optic material having a crystal axis perpendicular to a longitudinal direction of the waveguide and parallel to the crystal axis of the optical resonator, the waveguide located close to the resonator to evanescently couple with the optical resonator.
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Abstract
This application describes whispering gallery modes resonators made of electro-optic materials that are optically coupled to one or two waveguide couplers.
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Citations
19 Claims
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1. A device, comprising:
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an optical resonator formed of an electro-optic material and shaped to support a whispering gallery mode circulating in a plane that is perpendicular to a crystal axis of the electro-optic material; and
a waveguide formed of the electro-optic material having a crystal axis perpendicular to a longitudinal direction of the waveguide and parallel to the crystal axis of the optical resonator, the waveguide located close to the resonator to evanescently couple with the optical resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device, comprising:
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an optical resonator formed of an electro-optic material and shaped to support a whispering gallery mode circulating in a plane that is perpendicular to a crystal axis of the electro-optic material; and
a waveguide formed of the electro-optic material having a crystal axis perpendicular to a longitudinal direction of the waveguide and perpendicular to the crystal axis of the optical resonator, the waveguide having an angled facet at a first end which is located close to the resonator to evanescently couple with the optical resonator. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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providing an optical resonator formed of an electro-optic material with a crystal axis perpendicular to a plane in which a whispering gallery mode of the optical resonator circulates; and
using a waveguide, which is also formed of the electro-optic material, to effectuate a refractive index of guided light to be equal to or greater than a refractive index for the whispering gallery mode in the optical resonator to provide coupling between the optical resonator and the waveguide. - View Dependent Claims (17, 18, 19)
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Specification