针对两种不同激励情况,分别对5芯平行阵列芯光纤的超模进行了理论计算,并对其输出场强度分布进行了实验研究。通过对比5芯平行阵列芯光纤超模远场强度分布,分析了两种不同激励情况下输出各超模的光束质量。研究结果可为高功率光纤激光器、出射光斑为特定形状的光纤激光器的设计提供理论依据,对其他类似微结构光纤在激光器领域的应用具有借鉴意义。 According to two kinds of different excitation conditions, the theoretical calculation of the supermode of 5-core parallel array fiber is carried out respectively, and the output field intensity distribution is experimentally studied. By comparing the far-field intensity distribution of 5-core parallel array fiber super-mode fiber, the beam quality of each super-mode output under two different excitation conditions was analyzed. The research results can provide theoretical basis for the design of fiber lasers with high power fiber lasers and exiting speckles, and provide reference for other similar microstructured fibers in the field of lasers.