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:
Mar. 24, 2026
Filed:
Dec. 14, 2022
Applicant:
Fujitsu Optical Components Limited, Kawasaki, JP;
Inventors:
Hirotomo Izumi, Kawasaki, JP;
Suguru Akiyama, Kawasaki, JP;
Ayahito Uetake, Atsugi, JP;
Seimi Sasaki, Sagamihara, JP;
Assignee:
FUJITSU OPTICAL COMPONENTS LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/10 (2006.01); H01S 5/026 (2006.01); H01S 5/10 (2021.01); H01S 5/14 (2006.01); H01S 5/50 (2006.01); H01S 5/02 (2006.01);
U.S. Cl.
CPC ...
H01S 5/1014 (2013.01); H01S 5/026 (2013.01); H01S 5/1003 (2013.01); H01S 5/101 (2013.01); H01S 5/1032 (2013.01); H01S 5/141 (2013.01); H01S 5/142 (2013.01); H01S 5/50 (2013.01); H01S 5/5045 (2013.01); H01S 5/021 (2013.01);
Abstract
A wavelength tunable laser device includes: a first mirror; a second mirror; an optical amplifier provided between the first mirror and the second mirror; a wavelength tunable filter provided between the first mirror and the second mirror; and an optical waveguide coupling the optical amplifier and the wavelength tunable filter. The optical waveguide includes a first waveguide formed with a first width and a second waveguide formed with a second width wider than the first width.