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US 12,738,711 B2Granted
Wavelength tunable laser device and method of manufacturing the same
AssigneeSumitomo Electric Industries, Ltd.
InventorTsutomu Ishikawa
Life of this patent
Estimating the term…
Abstract
A wavelength tunable laser device includes a substrate, a plurality of first optical waveguides provided in the substrate, and a plurality of semiconductor elements bonded on a surface of the substrate and on the plurality of first optical waveguides. The semiconductor elements are formed of a III-V group compound semiconductor and have optical gains. Wavelengths with which the optical gains of the plurality of semiconductor elements reach peaks differ from one another.
Claims17
A wavelength tunable laser device comprising:
- a substrate;
- a plurality of first optical waveguides provided in the substrate;
- a plurality of semiconductor elements bonded on a surface of the substrate and on the plurality of first optical waveguides,
- wherein the semiconductor elements are formed of a III-V group compound semiconductor and have optical gains, and
- wherein wavelengths with which the optical gains of the plurality of semiconductor elements reach peaks differ from one another;
- a second optical waveguide provided in the substrate,
- wherein the second optical waveguide is optically coupled to the plurality of first optical waveguides;
- and
- a second selector provided on the substrate,
- wherein the second optical waveguide is branched into two branched second optical waveguides,
- wherein one of the first optical waveguides is optically coupled to one of the two branched second optical waveguides,
- wherein another one of the first optical waveguides is optically coupled to the other one of the two branched second optical waveguides, and
- wherein the second selector selects a second optical waveguide configured to transmit light from among the two branched second optical waveguides.
10 more elements
A method of manufacturing a wavelength tunable laser device, the method comprising:
- forming a plurality of first optical waveguides in a surface of a substrate;
- substrate;
- and
- bonding a plurality of semiconductor elements on the surface of the substrate and on the plurality of first optical waveguides,
- wherein the semiconductor elements are formed of a III-V group compound semiconductor and have optical gains, and
- wherein wavelengths with which the optical gains of the plurality of semiconductor elements reach peaks differ from one another;
- providing a second optical waveguides in the substrate,
- wherein the second optical waveguide is optically coupled to the plurality of first optical waveguides,
- wherein the second optical waveguide is branched into two branched second optical waveguides;
- and
- providing a second selector on the substrate,
- wherein one of the first optical waveguides is optically coupled to one of the two branched second optical waveguides,
- wherein another one of the first optical waveguides is optically coupled to the other one of the two branched second optical waveguides, and
- wherein the second selector selects a second optical waveguide configured to transmit light from among the two branched second optical waveguides.
11 more elements
A wavelength tunable laser device comprising:
- a substrate;
- a plurality of first optical waveguides provided in the substrate;
- a plurality of semiconductor elements bonded on a surface of the substrate and on the plurality of first optical waveguides,
- wherein the semiconductor elements are formed of a III-V group compound semiconductor and have optical gains, and
- wherein wavelengths with which the optical gains of the plurality of semiconductor elements reach peaks differ from one another;
- a second optical waveguide provided in the substrate,
- wherein the second optical waveguide is optically coupled to the plurality of first optical waveguides;
- a first reflector;
- and
- a second reflector,
- wherein the first reflector is optically coupled to the plurality of first optical waveguides, and
- wherein the second reflector is located opposite to the first reflector across the plurality of semiconductor elements, and is optically coupled to the second optical waveguide.
9 more elements
Dependencies are inferred from the claim text.