Spot size converter
AssigneeSumitomo Electric Industries, Ltd.
InventorsKunio Kobayashi, Yasutaka Mizuno
Life of this patent
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Abstract
A spot size converter includes a first optical waveguide, and a second optical waveguide. The first optical waveguide has a first tapered portion. The first tapered portion extends in a direction in which the first optical waveguide extends, and is thicker with decreasing distance from an end portion of the first optical waveguide and is thinner with decreasing distance from the second optical waveguide. The second optical waveguide is separated from the first tapered portion and has a second tapered portion. The second tapered portion extends in a direction in which the second optical waveguide extends, and is thinner with decreasing distance from the first tapered portion and is thicker with increasing distance from the first tapered portion.
Claims10
A spot size converter comprising:
- a first optical waveguide;
- a second optical waveguide;
- a first layer formed of a dielectric and including the first optical waveguide;
- and
- a second layer formed of silicon, embedded in the first layer and including the second optical waveguide,
- wherein the first optical waveguide has a first tapered portion,
- wherein the first tapered portion extends in a direction in which the first optical waveguide extends, and is thicker with decreasing distance from an end portion of the first optical waveguide and is thinner with decreasing distance from the second optical waveguide,
- wherein the second optical waveguide is separated from the first tapered portion and has a second tapered portion, and
- wherein the second tapered portion extends in a direction in which the second optical waveguide extends, and is thinner with decreasing distance from the first tapered portion and is thicker with increasing distance from the first tapered portion.
Dependencies are inferred from the claim text.