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Recent progress in slope-assisted Brillouin optical correlation-domain reflectometry

机译:斜坡辅助布里渊光学相关域反射仪的最新进展

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Brillouin optical correlation-domain reflectometry (BOCDR) is one of the fiber-optic Brillouin-based distributed sensing techniques for strain and temperature with single-end accessibility. Since the first proposal of the basic concept in 2008, the performance of BOCDR has been drastically improved from a variety of aspects including high-speed operation. Here, we focus on one of the high-speed BOCDR configurations referred to as slope -assisted (SA-) BOCDR. In this configuration, instead of observing the whole Brillouin gain spectrum, only the spectral power at a certain frequency on the spectrum is detected, leading to frequency-sweep-free high-speed operation and some unique features. In this review paper, we describe the recent advances of SA-BOCDR technology from its principle to characterization and applications. We also discuss the current issues of SA-BOCDR and present a concluding remark. (c) 2020 Elsevier Science. All rights reserved.
机译:Brillouin光学相关域反射仪(Bocdr)是用于应变和温度的光纤布里渊系的分布式传感技术之一,具有单端可访问性。 自2008年基本概念的第一个提议以来,Bocdr的表现从包括高速操作的各个方面都彻底改善。 在这里,我们专注于称为坡度(SA-)Bocdr的高速Bocdr配置之一。 在该配置中,除了观察整个布里渊增益频谱的情况下,检测到频谱上的某些频率的光谱功率,从而导致频率扫描的高速操作和一些独特的功能。 在本文中,我们描述了SA-BOCDR技术从其对特征和应用的原则的最新进步。 我们还讨论了Sa-Bocdr的当前问题,并提出了一个结论性的评论。 (c)2020 Elsevier科学。 版权所有。

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