白井君（M2）の成果が Advanced Sensor Research に受理されました。

斜め研磨接続を用いて偏波スクランブリング下でのPOF-BOCDRの動作を実証した白井君（M2）の論文が、Advanced Sensor Research に受理されました。

S. Shirai, Y. Kobayashi, O. Kimoto, A. Ioannou, K. Kalli, and Y. Mizuno, “Brillouin optical correlation-domain reflectometry with polymer fibers under scrambled polarization enabled by angled connections,” Adv. Sens. Res., accepted.

Polymer optical fibers (POFs) are attractive for Brillouin optical correlation-domain reflectometry (BOCDR) because of their flexibility and high strain tolerance. However, their low Brillouin frequency shift causes spectral overlap with Fresnel reflections, limiting the use of polarization scrambling. We show that angled physical contact (APC) connections suppress these reflections and enable reliable distributed sensing under scrambled polarization states. Distributed strain measurements performed with a 6-m POF reveal that conventional physical contact (PC) connections fails to detect strain, whereas APC connections yield Brillouin signals with a high signal-to-noise ratio and correctly measure a 0.65% strain.