Title:
光増幅器を用いた光伝送システム
Document Type and Number:
Japanese Patent JP5151453
Kind Code:
B2
Abstract:
An optical apparatus connected to an up and a down transmission lines, comprising an optical amplifier including an optical amplification medium and an excitation light source. The excitation light source supplies an excitation light to the optical amplification medium. An optical supervisory channel (OSC) unit receives OSC optical signals from, and transmits the OSC optical signals to, the up and the down transmission lines. If an output power decrease of the excitation light source due to an random failure is detected, the excitation light is kept unchanged and the OSC unit transmits information of the random failure of the excitation light source via the OSC optical signals to the up and the down transmission lines, and if the OSC unit receives information of an random failure of an excitation light source in another optical apparatus, the output light power of the excitation light source is increased.
Inventors:
Toshihiro Otani
Application Number:
JP2007328592A
Publication Date:
February 27, 2013
Filing Date:
December 20, 2007
Export Citation:
Assignee:
富士通株式会社
International Classes:
H01S3/10; H04B10/291; H04B10/03; H04B10/07; H04B10/077; H04B10/29; H04B10/294; H04J14/00; H04J14/02
Domestic Patent References:
| JP11298410A | ||||
| JP11068203A | ||||
| JP2000049405A | ||||
| JP2006128382A | ||||
| JP2000059308A | ||||
| JP11274628A | ||||
| JP2006165298A |
Foreign References:
| US20060221437 |
Attorney, Agent or Firm:
Tomijio Sasashima