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US 11,454,857 B2Granted
Folded waveguide phase shifters
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsHuan-Neng Chen, Chewn-Pu Jou, Lan-Chou Cho, Feng-Wei Kuo
Life of this patent
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Abstract
In an embodiment, a phase shifter includes: a light input end; a light output end; a p-type semiconductor material, and an n-type semiconductor material contacting the p-type semiconductor material along a boundary area, wherein the boundary area is greater than a length from the light input end to the light output end multiplied by a core width of the phase shifter.
Claims20
A phase shifter, comprising:
- a light input end;
- a light output end;
- a first semiconductor material, and
- a second semiconductor material different from the first semiconductor material, the second semiconductor material contacting the first semiconductor material along a boundary area, wherein the boundary area forms multi-pointed stars when viewed from a longitudinal cross sectional view extending from the light input end to the light output end.
1 more element
A modulator, comprising:
- a first waveguide;
- and
- a second waveguide, comprising:
- a light input end,
- a light output end,
- a first semiconductor material, and
- a second semiconductor material different from the first semiconductor material, the second semiconductor material contacting the first semiconductor material along a boundary area, wherein the first waveguide is different than the second waveguide, wherein a first light output of the first waveguide is combined with a second light output from the light output end, wherein the boundary area forms a plurality of discrete multi-pointed shapes when viewed from a longitudinal cross sectional view extending from the light input end to the light output end, wherein each of the plurality of discrete multi-pointed shapes comprises a multi-pointed star.
4 more elements
A method, comprising:
- connecting a first waveguide with a second waveguide different than the first waveguide, wherein the second waveguide comprises:
- a light input end,
- a light output end,
- a first semiconductor material, and
- a second semiconductor material, different from the first semiconductor material, the second semiconductor material contacting the first semiconductor material along a boundary area, wherein the boundary area forms a plurality of discrete multi-pointed shapes when viewed from a longitudinal cross sectional view extending from the light input end to the light output end, wherein each of the plurality of discrete multi-pointed shapes comprises a multi-pointed star;
- and
- combining a first light output of the first waveguide with a second light output from the light output end.
4 more elements
Dependencies are inferred from the claim text.