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US 12,517,414 B2Granted
Optical ring resonators
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorWen-Hao Cheng
Life of this patent
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Abstract
An optical device includes a ring resonator, a first optical waveguide with an end portion merged into a circumference of the ring resonator, and a second optical waveguide free of contact with the circumference of the ring resonator. The first optical waveguide is configured to receive photons. The second optical waveguide is configured to output photons coupled from the ring resonator.
Claims20
An optical device, comprising:
- a ring resonator;
- a first optical waveguide with an end portion merged into a circumference of the ring resonator, wherein the first optical waveguide is configured to receive photons;
- and
- a second optical waveguide free of contact with the circumference of the ring resonator, wherein the second optical waveguide is configured to output photons coupled from the ring resonator, wherein the first optical waveguide includes a first straight rail, the second optical waveguide includes a second straight rail, a virtual line passing through an end point of the first straight rail and a center of the ring resonator is perpendicular to the second straight rail.
1 more element
An optical device, comprising:
- a ring resonator;
- a first optical waveguide directly injecting photons into the ring resonator;
- and
- a second optical waveguide accepting photons escaping from the ring resonator through near-field coupling, wherein the ring resonator and the first and second optical waveguides are all disposed above a top surface of a semiconductor substrate,
- wherein the second optical waveguide includes an arc portion that partially surrounds the ring resonator, and wherein the second optical waveguide terminates at an end of the arc portion.
2 more elements
A method, comprising:
- sending a source light beam into a first optical waveguide;
- direct injecting the source light beam into a ring resonator through an end portion of the first optical waveguide that is in physical contact with the ring resonator, wherein a fraction of the source light beam is converted into a signal light beam via a spontaneous four-wave mixing process;
- and
- coupling the signal light beam into a second optical waveguide through near-field coupling between the ring resonator and the second optical waveguide, wherein the first optical waveguide, the ring resonator, and the second optical waveguide are all level and embedded in a dielectric layer disposed above a top surface of a semiconductor substrate,
- wherein the first optical waveguide includes a first straight rail, the second optical waveguide includes a second straight rail, a virtual line passing through an end portion of the first straight rail and a center of the ring resonator is perpendicular to the second straight rail.
2 more elements
Dependencies are inferred from the claim text.