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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-based dynamic fiber grating (BDG) based on stimulated Brillouin scattering is a new technology proposed in recent years. Compared with the traditional fiber grating, it has read-write separation, adjustable position, adjustable spectrum and fast weight Structure and other advantages, is one of the most active research focus in the field of optical fiber communication and sensing, especially in the field of distributed sensing can obtain high spatial resolution and high measurement accuracy at the same time, breaking the phonon lifetime in the traditional time-domain system limit. This paper summarizes the research status and the latest progress of BDG from the context of technological development. The distributed optical fiber sensing technology and its application based on BDG are introduced emphatically. The main problems in this field and the main trends of technological development are also discussed.