自行设计实验,采用CCD采集光纤末端输出的光斑,利用Matlab编写程序,分析了光纤输出光斑的光密度分布规律,并利用三维立体图进行直观表示。研究了光纤尺寸、数值孔径和弯曲程度对输出光斑均匀性的影响,结果显示,光纤越长,输出光斑越均匀;芯径与所用光源的尺度越接近,输出光斑越均匀;光纤弯曲后,光斑变得模糊化、均匀化,但光强变弱。 The experiment was designed by ourselves. CCD was used to collect the light spot output from the fiber end. The program was programmed by Matlab, and the optical density distribution of the optical output flare was analyzed. The visual representation was made by using the three-dimensional view. The results show that the longer the optical fiber, the more uniform the output light spot. The closer the core diameter and the light source used, the more uniform the output light spot. After the optical fiber is bent, the light spot Become blurred, uniform, but the light weaker.