基于受激布里渊散射的布里渊动态光纤光栅(BDG)是近几年提出的一项新技术，相比于传统的光纤光栅，具有读写分离、位置可调、光谱可调和快速重构等优势，是光纤通信及传感领域最活跃的研究热点之一，尤其是在分布式传感领域可同时获得高空间分辨率和高测量精度，打破了传统时域系统中声子寿命的限制。从技术发展脉络综述了BDG的研究现状与最新进展，重点介绍了基于BDG的分布式光纤传感技术与应用，并就目前该领域存在的主要问题以及技术发展的主要趋势进行了探讨。

Brillouin dynamic grating (BDG) based on stimulated Brillouin scattering is a new technology proposed in recent years. It is one of the hot topics in the area of fiber optic commutations and sensing due to its superiorities in separating writing and reading beams, tunability of location and spectra, and high speed reconfiguration over traditional fiber grating technique. It gains much more interest in distributed optical fiber sensing area since it overcomes the limitation of spatial resolution induced by the phonon′s lifetime and it can reach a much higher sensitivity. Current status and advances achieved in BDG are summarized along the technological developing trace. Technologies and applications of BDG based on distributed optical fiber sensing technologies are introduced. Existing problems and future trends are also discussed.