Title:
伝送路監視方法及び装置
Document Type and Number:
Japanese Patent JP5195746
Kind Code:
B2
Abstract:
Upon transmission path monitoring, when a monitoring signal responded by one of optical repeaters provided in a main signal transmission path is superposed on an optical main signal and sent out to the main signal transmission path, the optical main signal is branched to optical fibers, that are optical transmission paths, provided separately from the main signal transmission path and each provided with optical repeaters corresponding to the optical repeaters provided in the main signal transmission path, an optical main signal is selected from a desired optical fiber to be monitored from among the optical transmission paths and the monitoring signal is extracted from the optical main signal selected, thereby checking the quality of the desired optical fiber.
Inventors:
Katsuji Yamaguchi
Junichi Yoshimura
Junichi Yoshimura
Application Number:
JP2009505037A
Publication Date:
May 15, 2013
Filing Date:
March 20, 2007
Export Citation:
Assignee:
富士通株式会社
International Classes:
H04J14/00; H04B10/00; H04B10/07; H04B10/077; H04B10/079; H04B10/29; H04B10/297; H04B17/40; H04J14/02
Domestic Patent References:
| JP2003244080A | 2003-08-29 | |||
| JP2002062217A | 2002-02-28 | |||
| JP2002044037A | 2002-02-08 |
Attorney, Agent or Firm:
Shuji Moizumi
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