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. 02, 2025
Filed:
Jan. 27, 2021
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Shingo Ono, Musashino, JP;
Chihiro Kito, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An object of the present invention is to provide an optical access network that has high reliability for supporting information communication services and efficiently responds to difficult-to-predict optical fiber demand. An optical access network configuration according to the present invention includes an optical fiber cablethat is looped to connect a wiring sectionand an exchange officetogether (hereinafter, an upper loop), an optical fiber cablethat is looped and laid in each wiring section(hereinafter, a lower loop), and an optical fiber switching function unitinstalled at a connection pointbetween the upper loopand the lower loop. The optical fiber switching function unitis a wiring board or an optical switch which can be switched by connector connection. The wiring board or the optical switch may be remotely controllable.