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:
Oct. 21, 2025
Filed:
Jan. 17, 2023
Applicant:
Nec Corporation, Tokyo, JP;
Inventor:
Naoki Kobayashi, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/12 (2006.01); G02B 6/13 (2006.01); G02B 6/293 (2006.01);
U.S. Cl.
CPC ...
G02B 6/12007 (2013.01); G02B 6/12004 (2013.01); G02B 6/13 (2013.01); G02B 2006/12061 (2013.01); G02B 2006/12142 (2013.01); G02B 6/29338 (2013.01); G02B 6/29395 (2013.01);
Abstract
In order to achieve an optical transmitter that is reduced in size and price, an optical waveguide module includes a wavelength controller that controls a wavelength of output light output from a light source, and a wavelength locker that receives an input of the output light and outputs an electric signal indicating a relation between a wavelength of the output light and a target wavelength, wherein the wavelength controller and the wavelength locker are formed as a semiconductor optical waveguide on the same semiconductor substrate.