Improving performance of phase shift pulse BOTDR

[摘要] We propose a phase shift pulse BOTDR (PSP-BOTDR) using probes composed of long and short pulses with phase shift keying modulation, and evaluate its performance by experiment and simulation. Modifying the previous probe configuration reduces signal leakage from the adjacent section to a negligible extent, and achieves truely a spatial resolution of 20 cm.

[学科分类] 电子、光学、磁材料

[关键词] BOTDR;spontaneous Brillouin scattering;distributed fiber sensors