The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2024
Filed:
Nov. 11, 2021
Sumitomo Electric Industries, Ltd., Osaka, JP;
Takuo Hiratani, Osaka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
A semiconductor optical device includes a substrate containing silicon and including terraces, a waveguide, and a diffraction grating in different regions in plan view; and a semiconductor device formed of a III-V compound semiconductor and having an optical gain, the semiconductor device being joined to the diffraction grating and the terraces and being in contact with an upper surface of the substrate. The waveguide is optically coupled to the diffraction grating in a direction in which the waveguide extends. The terraces are located on both sides of the waveguide and the diffraction grating in a direction crossing the direction in which the waveguide extends. The substrate has a groove between each of the terraces and the waveguide. The diffraction grating is continuously connected to the terraces in the direction crossing the direction in which the waveguide extends.