Title:
光伝送システムおよび雑音抑制方法
Document Type and Number:
Japanese Patent JP5790364
Kind Code:
B2
Abstract:
A noise suppression method is used in an optical transmission system which includes node equipments transmitting a WDM optical signal. First node equipment drops a first optical signal from the WDM optical signal. The method includes: transmitting a failure signal that specifies the first optical signal from second node equipment to the first node equipment via a first route when the second node equipment arranged on the first route for transmitting the first optical signal to the first node equipment has detected a failure of the first optical signal; transmitting a shutoff signal that specifies the first optical signal from the first node equipment toward the second node equipment via the first route; and shutting off an optical output of a wavelength corresponding to the first optical signal in third node equipment that has relayed the failure signal and has received the shutoff signal.
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Inventors:
Nakajima mine poem
Yasuko Nozu
Katsuhiro Shirai
Taketsugu Tsuneji
Toko Toko
Yasuko Nozu
Katsuhiro Shirai
Taketsugu Tsuneji
Toko Toko
Application Number:
JP2011205315A
Publication Date:
October 07, 2015
Filing Date:
September 20, 2011
Export Citation:
Assignee:
富士通株式会社
International Classes:
H04B10/032; H04B10/275; H04J14/00; H04J14/02
Domestic Patent References:
| JP3976771B2 | ||||
| JP2009130505A | ||||
| JP11098077A | ||||
| JP2003158527A |
Foreign References:
| US20110116789 |
Attorney, Agent or Firm:
Yoshiyuki Osuga
virtue Tamio Ei
virtue Tamio Ei
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