Title:
分布ラマン増幅器および光通信システム
Document Type and Number:
Japanese Patent JP5396829
Kind Code:
B2
Abstract:
The distributed Raman amplifier monitors an OSNR of each channel in a WDM light which has been propagated through a transmission path to be Raman amplified, and thereafter, is amplified by an optical amplifier in an optical repeating node; judges whether a monitor value of the OSNR is larger or smaller than a previously set target value thereof; and feedback controls a driving state of a pumping light source which supplies a Raman pumping light to the transmission path, based on the judgment result. The optical communication system comprises the above distributed Raman amplifier in each repeating span thereof, and performs a pumping light control of the distributed Raman amplifier corresponding to the repeating span selected based on the OSNR in each distributed Raman amplifier and the monitor result of span loss. As a result, it becomes possible to effectively improve the OSNR of each channel in the WDM light, and also, to reduce the power consumption.
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Inventors:
Miki Onaka
Application Number:
JP2008297463A
Publication Date:
January 22, 2014
Filing Date:
November 21, 2008
Export Citation:
Assignee:
富士通株式会社
International Classes:
G02F1/35; H01S3/30; H04B10/07; H04B10/2537; H04B10/29; H04B10/294; H04J14/00; H04J14/02
Domestic Patent References:
| JP2003124881A | ||||
| JP2005303070A | ||||
| JP2008182679A | ||||
| JP2006033542A |
Attorney, Agent or Firm:
Yu Sanada