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:
Sep. 15, 2026
Filed:
Nov. 01, 2023
Applicant:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Inventor:
Tsutomu Ishikawa, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/10 (2021.01); G02F 1/01 (2006.01); H01S 5/06 (2006.01); H01S 5/343 (2006.01);
U.S. Cl.
CPC ...
H01S 5/0612 (2013.01); G02F 1/0147 (2013.01); H01S 5/1007 (2013.01); H01S 5/101 (2013.01); H01S 5/3434 (2013.01); H01S 5/34386 (2013.01);
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.