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. 10, 2025
Filed:
Oct. 30, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Manabu Yoshino, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An optical communication device includes an optical switch that outputs an optical signal input from one of a plurality of transmission lines to another transmission line among the plurality of transmission lines, a monitoring unit that relays an optical signal in a transmission line on a side where the optical signal is output from the optical switch, a blocking unit that blocks transmission of an optical signal output from the monitoring unit, a wavelength controller that allocates a wavelength and the like that are a wavelength, a time, a polarization, a mode, a code, a frequency, a core, a core wire, or a combination thereof to an optical signal of a subscriber device via the monitoring unit, and an optical switch controller that controls the optical switch such that the optical signal input from the transmission line to the optical switch is output to the another transmission line, and cancels the blocking by the blocking unit.