大坪君（M2）の論文が Scientific Reports に掲載されました。

低コヒーレンスブリルアン光相関領域反射計を提案し、高精度な歪分布測定を実証した大坪君（M2）の論文が、Scientific Reports に掲載されました。

K. Otsubo, G. Zhu, T. Kiyozumi, K. Noda, K. Nakamura, H. Lee, and Y. Mizuno, “Systematic-error suppression in low-coherence Brillouin optical correlation-domain reflectometry,” Sci. Rep., vol. 13, 17531 (2023).

Brillouin optical correlation-domain analysis (BOCDA) utilizing low-coherence light sources offers high-resolution distributed strain and temperature sensing. However, conventional BOCDA requires dual-end injection of pump and probe light into the sensing fiber. To overcome this limitation, low-coherence Brillouin optical correlation-domain reflectometry (BOCDR) based on spontaneous Brillouin scattering has emerged, enabling single-end light injection. While a pilot demonstration has shown a spatial resolution of 19 cm, a comparison of its measurement accuracy with standard BOCDR systems is yet to be explored. This study presents a distributed measurement with ~3 cm spatial resolution and demonstrates that low-coherence BOCDR eliminates systematic errors caused by direct sinusoidal modulation, offering enhanced measurement precision.