Brillouin optical reflectometer with a Brillouin active filter

被引：2
|
作者：
Budylin, G. S. [1 ]
Gorshkov, B. G. [2 ]
Gorshkov, G. B. [3 ]
Zhukov, K. M. [3 ,4 ]
Paramonov, V. M. [5 ]
Simikin, D. E.
机构：
[1] Moscow MV Lomonosov State Univ, Fac Chem, Vorobevy Gory, Moscow 119991, Russia
[2] Russian Acad Sci, AM Prokhorov Gen Phys Inst, Ul Vavilova 38, Moscow 119991, Russia
[3] PetroFibre Ltd, Klinskii Pr 7, Tula 301664, Russia
[4] Lab Elect & Opt Syst Ltd, Spartakovskaya pl,14 Str 4, Moscow 105082, Russia
[5] Russian Acad Sci, Fiber Opt Res Ctr, Ul Vavilova 38, Moscow 119991, Russia
来源：
QUANTUM ELECTRONICS | 2017年 / 47卷 / 07期
关键词：
distributed sensor; Brillouin reflectometer; fibre optics; SCATTERING; STRAIN; FIBERS; TEMPERATURE; RESOLUTION; SENSOR; QUARTZ;
D O I：
10.1070/QEL16393
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new scheme of a fibre-optic Brillouin reflectometer is experimentally studied, in which the spectral line of spontaneous Brillouin scattering is selected by an active Brillouin filter represented by the tested fibre itself. To improve the reflectometer characteristics, a cyclic code and Raman amplification of the scattering signal are applied. With an averaging time of 5 min, scanning of 25 km of fibre with a spatial resolution of 4 m and a sampling resolution of 1 m are provided. The root-mean-square deviation in determining the Brillouin frequency is less than 1.1 MHz. The reflectometer sensitivity is evaluated with respect to the temperature changes and mechanical deformation.
引用
收藏
页码：597 / 600
页数：4
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