朱君（D3）の論文が Japanese Journal of Applied Physics に掲載されました。

2台のレーザを用いたブリルアン光相関領域反射計の動作速度を向上させた朱君（D3）の論文が、Japanese Journal of Applied Physics に掲載されました。

G. Zhu, T. Ishimaru, H. Takahashi, K. Toge, and Y. Mizuno, “Proof-of-concept demonstration of high-speed dual-laser Brillouin optical correlation-domain reflectometry,” Jpn. J. Appl. Phys., vol. 65, no. 4, 048003 (2026).

We develop a dual-laser Brillouin optical correlation-domain reflectometry configuration for high-speed distributed strain measurement. High-speed Brillouin gain spectrum (BGS) acquisition is achieved by optical frequency sweeping of an independently controlled reference laser, enabling time-domain BGS observation without frequency sweeping of an electrical spectrum analyzer. Distributed strain measurement is demonstrated along a 3.5 m long fiber under test. Strain is measured at 100 sensing points with a repetition rate of 10 Hz and a BGS acquisition rate of 1 kHz. The proposed method has no theoretical limitation on strain dynamic range and preserves constant spatial resolution while reducing system complexity.