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:
Dec. 23, 2025
Filed:
Mar. 04, 2022
Applicant:
Kddi Corporation, Tokyo, JP;
Inventors:
Yuta Wakayama, Fujimino, JP;
Takehiro Tsuritani, Fujimino, JP;
Assignee:
KDDI CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/00 (2006.01); G02B 6/02 (2006.01); H01S 3/067 (2006.01); H01S 3/091 (2006.01);
U.S. Cl.
CPC ...
H01S 3/06708 (2013.01); G02B 6/02042 (2013.01); H01S 3/091 (2013.01);
Abstract
An optical coupler includes N members. A Kth (K is an integer of 1 to N) member includes a MCF including P (P is an integer of N or greater) cores, and a marker disposed at a position closest to a first core, and at least one SCF. A core of the SCF of the Kth member is coupled to a coupled core other than the first core. Cores of the MCF of an Mth (M is an integer of 1 to N−1) member are connected to cores of the MCF of an (M+1)th member. A total number of SCF included in the N members is P. Each of P cores of the MCFs configured through the connection of the N members is connected to a core of one of the SCFs.