李さん(東工大 OG)の招待論文が Optical Fiber Technology に掲載されました。

傾斜利用ブリルアン光相関領域反射計の提案から最新展開までをまとめた招待総説論文が Optical Fiber Technology に掲載されました。李さん(東工大 OG、芝浦工業大学 助教)の博士論文の内容がベースとなっています。

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.