常熟理工学院との共同研究の成果が Applied Physics Express に掲載されました。

圧縮センシングに基づくブリルアン光相関領域反射計の高速化を実証した論文が Applied Physics Express に掲載されました。中国の常熟理工学院（Changshu Institute of Technology）の姚雨果博士との共同研究の成果です。

Y. Yao, Y. Lu, and Y. Mizuno, “Proposal of compressed sensing-assisted Brillouin optical correlation-domain reflectometry for effective repetition rate enhancement,” Appl. Phys. Express, vol. 16, no. 3, 032005 (2023).

Compressed sensing (CS) is proposed in Brillouin optical correlation-domain reflectometry (BOCDR) to enhance the effective repetition rate at any single position along an optical fiber. Through the random selection of modulation frequencies applied to the laser source in each epoch that the entire fiber is traversed by the correlation peak, and the reconstruction of the under-sampled data, a clear picture of the distributed and time-varying Brillouin frequency shift values can be achieved. In the proof-of-concept demonstrations, static strain and dynamic strain at the frequencies of 20 Hz and 40 Hz are measured with CS at different sparsity rates. The effective repetition rate is enhanced by at least 10 times with an improved temporal resolution.