非线性效应和光纤损伤是抑制光纤激光器功率提升的主要因素,因此实现单模运转的大模场面积光纤成为国内外研究人员关注的热点。从光纤滤模、光纤结构设计和模式转换三方面出发,详细介绍了当前大模场面积光纤高阶模抑制技术的研究进展,通过对比几种技术方案,对高功率光纤激光器单模运转的发展进行了展望。 Nonlinear effects and fiber damage are the main factors that inhibit the power increase of fiber lasers. Therefore, the large-mode-area fiber with single-mode operation has become a hot spot of researchers at home and abroad. From the aspects of optical fiber filter, optical fiber structure design and mode conversion, this paper introduces the research progress of the current high mode mode optical fiber high-order mode suppression technology. By comparing several technical schemes, the development of high-power fiber laser single mode operation Outlook.