プラスチック光ファイバ中のブリルアン散乱を用いた分布測定の雑音低減手法に関する水野助教の論文が Optics Letters に掲載されました。
Y. Mizuno, H. Lee, N. Hayashi, and K. Nakamura, “Noise suppression technique for distributed Brillouin sensing with polymer optical fibers,” Opt. Lett., vol. 44, no. 8, pp. 2097-2100 (2019).
We develop a new noise suppression technique to perform distributed strain and temperature sensing based on a higher-speed configuration of Brillouin optical correlation-domain reflectometry even when a polymer optical fiber (POF) is used as a sensing fiber. We acquire the spectral difference between with and without reference light, leading to selective observation of the beat signal of Brillouin-scattered light and reference light, which is effective for distributed sensing. After experimentally showing the usefulness of this technique, we demonstrate POF-based distributed temperature sensing and dynamic strain sensing.