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分布式侧面抽运光纤是指一种抽运光由抽运纤通过倏逝场逐渐耦合到信号纤的特殊增益光纤(图1),其抽运通道和信号通道相对独立,在抽运光耦合和光纤器件保护方面具有独特的优势,并且使抽运光吸收和热沉积更加均匀,在功率提升方面具有非常大的潜力,是大功率光纤激光器领域的一个重要研究分支。
Distributed side-pumped optical fiber refers to a special gain fiber (Figure 1) in which the pump light is gradually coupled to the signal fiber from the pump fiber through the evanescent field. The pump channel and the signal channel are relatively independent. When the pump optical coupling And fiber optic device protection has a unique advantage, and make pumping light absorption and thermal deposition more uniform, with great potential for power improvement, is a major research branch in the field of high-power fiber lasers.