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

被引：8
作者：
Lee, Heeyoung [1 ]
Nakamura, Kentaro [2 ]
Mizuno, Yosuke [3 ]
机构：
[1] Shibaura Inst Technol, Coll Engn, Tokyo 1358548, Japan
[2] Tokyo Inst Technol, Inst Innovat Res, Yokohama, Kanagawa 2268503, Japan
[3] Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2408501, Japan
来源：
OPTICAL FIBER TECHNOLOGY | 2020年 / 59卷
关键词：
Optical fiber sensors; Distributed sensing; Brillouin scattering; Optical reflectometry; Correlation-domain technique; Structural health monitoring; MEASUREMENT RANGE ENLARGEMENT; DYNAMIC STRAIN-MEASUREMENT; SPATIAL-RESOLUTION; REPETITION-RATE; FIBER; BOTDA; SENSITIVITY; PROPOSAL; NETWORK;
D O I：
10.1016/j.yofte.2020.102312
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：
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.
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页数：10
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