Ultra-long phase-sensitive OTDR with hybrid distributed amplification,

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Teaching and Research Group:光纤传感与器件

Journal:Optics Letters

Key Words:Fiber optics sensors;Scattering,Rayleigh;Scattering,stimulated Brillouin;Scattering,stimulated Raman

Abstract:A phase-sensitive optical time-domain reflectometry (Φ-OTDR) with 175 km sensing range and 25 m spatial resolution is demonstrated, using the combination of co-pumping second-order Raman amplification based on random fiber lasing, counter-pumping first-order Raman amplification, and counter-pumping Brillouin amplification. With elaborate arrangements, each pumping scheme is responsible for the signal amplification in one particular segment of all three. To the best of our knowledge, this is the first time that distributed vibration sensing is realized over such a long distance without insertin

Note:Optics Letters, 39(21), pp. 5866-5869, 2014.

All the Authors:Yunjiang Rao, Yi Zhou, Li Zhang, Fei Peng, Han Wu, Mengqiu Fan, Jin Li, Jiajia Zeng,Zinan Wang

First Author:Zinan Wang

Indexed by:Unit Twenty Basic Research

Correspondence Author:Zinan Wang

Discipline:Engineering

First-Level Discipline:Optical engineering

Volume:39

Issue:21

Page Number:5866-5869

Translation or Not:no