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. 06, 2022
Filed:
Nov. 28, 2017
Applicant:
Oe Solutions Co., Ltd., Gwangju, KR;
Inventor:
Ki Hong Yoon, Daejeon, KR;
Assignee:
OE Solutions Co., Ltd., Gwangju, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/06 (2006.01); H01S 5/042 (2006.01); H01S 5/024 (2006.01); H01S 5/125 (2006.01); H01S 5/0625 (2006.01); H01S 5/026 (2006.01); H01S 5/20 (2006.01); H01S 5/12 (2021.01); H01S 5/343 (2006.01);
U.S. Cl.
CPC ...
H01S 5/0612 (2013.01); H01S 5/0261 (2013.01); H01S 5/02453 (2013.01); H01S 5/04256 (2019.08); H01S 5/06256 (2013.01); H01S 5/125 (2013.01); H01S 5/2045 (2013.01); H01S 5/2086 (2013.01); H01S 5/1209 (2013.01); H01S 5/34313 (2013.01); H01S 5/34326 (2013.01);
Abstract
According to an embodiment, a wavelength tunable laser comprising a gain region and a wavelength tunable area is disclosed. The wavelength tunable area comprises: a lower clad layer; a passive optical waveguide positioned on the lower clad layer; an upper clad layer positioned on the passive optical waveguide; a drive electrode positioned on the upper clad layer; a current blocking layer positioned on the drive electrode; a heater positioned on the current blocking layer; and a first insulating groove and a second insulating groove which are positioned so as to face each other with the passive optical waveguide therebetween.