Slope-assisted BOTDA based on vector SBS and frequency-agile technique for wide-strain-range dynamic measurements

• Published in: Optics express Vol. 25; no. 3; pp. 1889 - 1902
• Main Authors: Zhou, Dengwang, Dong, Yongkang, Wang, Benzhang, Jiang, Taofei, Ba, Dexin, Xu, Pengbai, Zhang, Hongying, Lu, Zhiwei, Li, Hui
• Format: Journal Article
• Language: English
• Published: United States 06.02.2017

We present a slope-assisted BOTDA system based on the vector stimulated Brillouin scattering (SBS) and frequency-agile technique (FAT) for the wide-strain-range dynamic measurement. A dimensionless coefficient K defined as the ratio of Brillouin phase-shift to gain is employed to demodulate the stra...