| 发明名称 |
MEASUREMENT METHOD BY OTDR AND TERMINAL STATION DEVICE |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique for measuring a long distance span by OTDR in a non-relay optical transmission system. <P>SOLUTION: In an optical transmission system having a first terminal station and a second terminal station, Raman amplification is applied to a signal light for OTDR to be sent from an OTDR apparatus provided in the first terminal station to the second terminal station by using a main signal light in the optical transmission system as an exciting light. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
| 申请公布号 |
JP2004282363(A) |
申请公布日期 |
2004.10.07 |
| 申请号 |
JP20030070318 |
申请日期 |
2003.03.14 |
| 申请人 |
FUJITSU LTD;NIPPON TELEGR & TELEPH CORP <NTT> |
发明人 |
MAEHARA TAKAYUKI;HARASAWA SHINICHIRO;FUNATSU GENTARO;MAEDA HIDEKI;NAGA AKIRA |
| 分类号 |
G01M11/02;H04B10/00;H04B10/07;H04B10/071;H04B10/077;H04B17/00;H04J14/00;H04J14/02 |
主分类号 |
G01M11/02 |
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