23 April 2017 Narrowing Brillouin gain spectrum for BOTDA sensor
Author Affiliations +
Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103239K (2017) https://doi.org/10.1117/12.2267646
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
A novel BOTDA method based on differential ∏-phase-shift-pulse pair is proposed for narrowing the Brillouin gain spectrum. Theoretical analysis and experimental results demonstrate that the proposal could achieve 17 MHz Brillouin gain spectrum linewidth with a fixed spatial resolution of 2.5 m. The Brillouin gain spectrum linewidth is 3 times narrower than that obtained using conventional single-pulse based BOTDA method with same spatial resolution, resulting in √3 times frequency accuracy improvement. Furthermore, the sharper rising/falling edge of the Brillouin frequency shift profile resulting from the narrowed Brillouin gain spectrum could obtain more precise temperature/strain information along the fiber.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wenqiao Lin, Wenqiao Lin, Zhisheng Yang, Zhisheng Yang, Xiaobin Hong, Xiaobin Hong, Sheng Wang, Sheng Wang, Jian Wu, Jian Wu, } "Narrowing Brillouin gain spectrum for BOTDA sensor", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103239K (23 April 2017); doi: 10.1117/12.2267646; https://doi.org/10.1117/12.2267646
PROCEEDINGS
4 PAGES


SHARE
Back to Top