Frequency-domain analysis of dynamically applied strain using sweep-free Brillouin time-domain analyzer and sloped-assisted FBG sensing

被引：25
|
作者：
Voskoboinik, Asher [1 ]
Rogawski, Dvora [1 ]
Huang, Hao [1 ]
Peled, Yair [2 ]
Willner, Alan E. [1 ]
Tur, Moshe [2 ]
机构：
[1] Univ So Calif, Dept Elect Engn Syst, Los Angeles, CA 90035 USA
[2] Tel Aviv Univ, Sch Elect Engn, IL-69978 Tel Aviv, Israel
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 26期
关键词：
SPATIAL-RESOLUTION; OPTICAL-FIBERS; SCATTERING; SENSOR; BOTDA; PROFILE;
D O I：
10.1364/OE.20.00B581
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Fast reconstruction of the whole Brillouin gain spectrum is experimentally demonstrated using sweep-free Brillouin optical time-domain analysis (SF-BOTDA). Strain variations with the frequencies up to 400Hz are spectrally analyzed, achieving strain sensitivity of 1 microstrain per root Hz at a sampling rate of 5.5kHz and a spatial resolution of 4m. The results favorably compare with fiber Bragg grating sensing. (C) 2012 Optical Society of America
引用
收藏
页码：B581 / B586
页数：6
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