ロスポイント有無判定方法及びそれを用いた分布型ラマン増幅装置

Title:

ロスポイント有無判定方法及びそれを用いた分布型ラマン増幅装置

Document Type and Number:

Japanese Patent JP4101024

Kind Code:

B2

Abstract:

Power of scattered light separated from an optical transmission path is monitored, part of the excitation light is separated and power thereof is monitored, power of reflected light which passes in a direction opposite to a direction in which signal light passes through the optical transmission path is monitored, and, when monitored power of an excitation light reaches a predetermined determination value, whether or not any loss point occurs is determined, based on a ratio between the monitored power of the scattered light and the monitored power of the reflected light.

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Inventors:

Takashi Kamata
Motoyoshi Sekiya
Ryosuke Goto

Application Number:

JP2002322574A

Publication Date:

June 11, 2008

Filing Date:

November 06, 2002

Export Citation:

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Assignee:

富士通株式会社

International Classes:

G02F1/35; H01S3/10; H01S3/30; H04B10/03; H04B10/071; H04B10/077; H04B10/079; H04B10/29; H04B10/293; H04B10/294; H04B10/564; H04B10/572; H01S3/067; H01S3/131

Domestic Patent References:

JP2001109025A
JP2002221743A
JP2003298527A

Foreign References:

WO2002021204A1

Attorney, Agent or Firm:

Tadahiko Ito

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