白井君（M1）の論文が Japanese Journal of Applied Physics に掲載されました。

特殊材料コアを有する全フッ素化プラスチック光ファイバ中のブリルアン散乱のセンシング特性を解明した白井君（M1）の論文が、Japanese Journal of Applied Physics に掲載されました。

S. Shirai, S. Ochi, Y. Wada, K. Nakamura, T. Moriya, Y. Kaseda, T. Shimizu, and Y. Mizuno, “Brillouin frequency shift dependences on strain and temperature in perfluorinated polymer optical fibers with unique core dopants,” Jpn. J. Appl. Phys., vol. 64, no. 3, 038003 (2025).

Optical fiber sensors based on Brillouin scattering have attracted extensive attention due to their ability to perform distributed strain and temperature measurements. In this study, we explore the Brillouin frequency shift (BFS) characteristics in perfluorinated graded-index polymer optical fibers (POFs) doped with unique materials, focusing on the BFS dependencies on strain and temperature. Our results reveal a strain sensitivity coefficient of –195 MHz/%, which is approximately 1.6 times higher in absolute value than previously reported for other POFs, while the temperature sensitivity (–3.1 MHz/K) remains comparable to previous findings.