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:
Jun. 04, 2019
Filed:
Feb. 02, 2018
Applicant:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Inventors:
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01); H01S 5/14 (2006.01); G02F 1/01 (2006.01); H01S 5/10 (2006.01); H01S 5/026 (2006.01); H01S 5/40 (2006.01); H01S 5/0687 (2006.01);
U.S. Cl.
CPC ...
H01S 5/142 (2013.01); G02F 1/011 (2013.01); H01S 5/026 (2013.01); H01S 5/0687 (2013.01); H01S 5/1007 (2013.01); H01S 5/1025 (2013.01); H01S 5/1032 (2013.01); H01S 5/1092 (2013.01); H01S 5/14 (2013.01); H01S 5/141 (2013.01); H01S 5/146 (2013.01); H01S 5/4068 (2013.01); H01S 5/0262 (2013.01); H01S 5/0264 (2013.01);
Abstract
A apparatus includes a tunable laser configured to include a tunable filter and a mirror; a first optical splitter provided between the tunable filter and the mirror, the first optical splitter including a first port and a second port on a tunable filter side and a third port and a fourth port on a mirror side, in which the tunable filter is coupled to the first port and the mirror is coupled to the third port, respectively; a first optical waveguide coupled to the second port; a second optical waveguide coupled to the fourth port; and an optical coupler with which the first optical waveguide and the second optical waveguide are combined.