傾斜利用ブリルアン光相関領域反射計による世界最短の歪印加区間・高温区間の検出に関する李（D1）の論文が Japanese Journal of Applied Physics に掲載されました。
H. Lee, Y. Mizuno, and K. Nakamura, “Detection of 2-mm-long strained section in silica fiber using slope-assisted Brillouin optical correlation-domain reflectometry,” Jpn. J. Appl. Phys., vol. 57, no. 2, 020303 (2018).
Slope-assisted Brillouin optical correlation-domain reflectometry is a single-end-access distributed Brillouin sensing technique with high spatial resolution and high-speed operation. We have recently discovered its unique feature that strained or heated sections even shorter than nominal resolution can be detected, but its detailed characterization has not been performed. Here, after experimentally characterizing this “beyond-nominal-resolution” effect, we show its usefulness by demonstrating detection of a 2-mm-long strained section along a silica fiber. We also demonstrate detection of a 5-mm-long heated section along a polymer optical fiber. The lengths of these detected sections are shorter than those of the other demonstrations reported thus far.