Extended-range optical time domain-reflectometry system at 1.65 μm based on delayed Raman amplification

被引：10

作者：

Kee, HH ^{[1
]}

Lees, GP ^{[1
]}

Newson, TP ^{[1
]}

机构：

[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

来源：

OPTICS LETTERS | 1998年 / 23卷 / 05期

关键词：

D O I：

10.1364/OL.23.000349

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe both theoretical and experimental results obtained in an investigation of a new technique for increasing the dynamic range of 1.65-mu m optical time domain-reflectometry (OTDR) systems. utilizes delayed Raman amplification of a 1.65-mu m signal pulse by a 1.53-mu m pump pulse. occurs when the two pulses overlap, and this position is determined by the initial delay between the pulses and the fiber dispersion. An increase in dynamic range of 17.5 dB has been observed, and the OTDR backscattered Rayleigh signal was detected up to 100 km. No significant noise penalty is introduced as a result of the directionality of the Raman gain. (C) 1998 Optical Society of America.

引用

页码：349 / 351

页数：3

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