傾斜利用ブリルアン光相関領域反射計（SA-BOCDR）の提案・基本原理から、最新展開、将来の課題までをまとめた李ひよん助教の招待レビュー論文が Optical Fiber Technology に掲載されました。これまでの李助教の研究成果の集大成です。
H. Lee, K. Nakamura, and Y. Mizuno, “Recent progress in slope-assisted Brillouin optical correlation-domain reflectometry,” Opt. Fiber Technol., vol. 59, 102312 (2020) <invited review>.
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.