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:
Nov. 18, 2025
Filed:
Aug. 07, 2020
Ntt, Inc., Tokyo, JP;
Tatsuya Fujimoto, Musashino, JP;
Hidenobu Hirota, Musashino, JP;
Takui Uematsu, Musashino, JP;
Tomohiro Kawano, Musashino, JP;
Hiroyuki Iida, Musashino, JP;
Ryo Koyama, Musashino, JP;
Tetsuya Manabe, Musashino, JP;
Kazunori Katayama, Musashino, JP;
NTT, Inc., Tokyo, JP;
Abstract
An object of the present disclosure is to provide an optical coupling device capable of controlling a coupling rate of optical coupling between two coupling optical fibers. An optical coupling device of the present disclosure includes two coupling optical fibers each including a core and a clad and, between the two coupling optical fibers, a thickness variable member having a thickness between the two coupling optical fibers that varies by irradiation with light.