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. 20, 2022
Filed:
Oct. 30, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Kana Masumoto, Tokyo, JP;
Toshiya Matsuda, Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
An unused path through which actual data is not transmitted in a long-distance redundant network can be appropriately detect, and this function is realized at low cost. A transmission unitof optical transceiversandconnected to each other by an optical fiber cablein an optical transmission systemincludes a laserfor emitting a laser beam serving as an optical signal Pto the optical fiber cable, and an optical intensity control unitfor performing control to change the optical level of the optical signal of the laser beam. Each of the optical transceiversandincludes a control unitfor superimposing each of an idle signal A, an OAM signal O, and an actual data signal Don an XGMII signaland outputting this XGMII signalto the transmission unitthat transmits the optical signal P, and a signal determination unitfor determining unique information regarding each signal output to the transmission unitand outputting a determination result signal. The optical intensity control unitperforms control to change the optical level of the optical signal Pon which a signal of the determination of each signal indicated by the determination result signalis superimposed to different optical levels Lto Lbetween the signals.