Raman-assisted long-distance optical time domain reflectometry

7 December 1989

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 25 (25) , 1687-1689
https://doi.org/10.1049/el:19891128

Abstract

The measurement range of long-haul optical time domain reflectometry (OTDR) may be extended substantially by introducing distributed Raman gain in the fibre under test. With semiconductor pump lasers an increase in the fault location range of at least 10dB one-way is achievable, without requiring the OTDR to have an increased processing dynamic range.

Keywords

10 DB
RAMAN ASSISTED OTDR
OPTICAL FIBRE RAMAN GAIN
LONG-HAUL OPTICAL TIME DOMAIN REFLECTOMETRY
SEMICONDUCTOR PUMP LASERS
DISTRIBUTED RAMAN GAIN
OTDR
FAULT LOCATION RANGE
LONG-DISTANCE OPTICAL TIME DOMAIN REFLECTOMETRY
MEASUREMENT RANGE

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