Sweep-free distributed Brillouin time-domain analyzer (SF-BOTDA).
Sweep-free distributed Brillouin time-domain analyzer (SF-BOTDA).
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DOI：
10.1364/oe.19.00b842
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发表时间：
2011-12
期刊：
影响因子：
3.8
通讯作者：
A. Voskoboinik;O. Yilmaz;A. Willner;M. Tur
中科院分区：
文献类型：
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作者：
A. Voskoboinik;O. Yilmaz;A. Willner;M. Tur
提出了一种用于分布式布里渊传感的免频率扫描方法，该方法具有快速动态应变测量的潜力。在该方法的报告实施中，具有精心选择的光学频率的多个探测波同时在光纤中传播，对抗相同数量的顺序发射的匹配频率的短泵浦脉冲，其中每个泵浦-探针对取代了经典 BOTDA 技术中的一个扫描步骤。实验证明，分布式传感具有几米的空间分辨率。
A frequency-sweep-free method for distributed Brillouin sensing is proposed, having the potential for fast dynamic strain measurements. In this reported implementation of the method, multiple probe waves with carefully chosen optical frequencies simultaneously propagate in the fiber against an equal number of sequentially-launched, short pump pulses of matching frequencies, where each of pump-probe pair replaces one sweeping step in the classical BOTDA technique. Experimentally, distributed sensing is demonstrated with a spatial resolution of a few meters.