Renaissance IP Law Group, LLP
Fiber optic acoustic wave detection system
Provided is a fiber optic acoustic wave detection system, pertaining to the fiber optic sensing technical field. The system comprises a power output apparatus, a backward Rayleigh scattering principle-based first distributed sensing apparatus, a backward weak optical fiber grating reflection principle-based second distributed sensing apparatus, and a third distributed sensing apparatus. The first distributed sensing apparatus and the second distributed sensing apparatus are connected with the power output apparatus, respectively. The first distributed sensing apparatus and the second distributed sensing apparatus are connected with the third distributed sensing apparatus, respectively. Compared with conventional approaches, the signal contrast and sensitivity of the detection system are greatly improved by combining the backward Rayleigh scattered signal in the first distributed sensing apparatus with the backward weak optical fiber grating reflected signal in the second distributed sensing apparatus, and the detection system detection bandwidth is significantly widened by the third distributed sensing apparatus.
Laser Institute of Shandong Academy of Science
G
G01H
inventional
Xiaohui Chang Ying Chang Jiasheng Bing Wen'an Long Chen
Liu Wang Shang Li Ni Cao Zhao Ma Wang