模式理论是到目前为止在纤维学习光的繁殖特征的主要方法,但是它不对在管的光的分析合适。由使用跟踪光线的方法,在纤维组织的 multimode 单个的 mode-multimode (MSM ) 的光的旋转繁殖特征在这份报纸被分析。第一,在纤维的光线能在一个刻写的圆附近宣传,并且这纤维的中央轴是繁殖轴。第二,刻写的圆的半径被事件角度和事件位置决定,并且它的变化在 0 之间并且 R 在哪儿的 M , R M 是 multimode 纤维的半径。最后,核心的比率和 cladding 直径越大,繁殖效率是越多 higher。
The mode theory is the main way to study the propagation characteristics of light in fiber so far,but it is not suitable for analysis of light in duct.By using ray-tracing method,the rotary propagation characteristics of light in multimode-single mode-multimode(MSM) fiber structures are analyzed in this paper.Firstly,the light ray in fiber can propagate around an inscribed circle,and the central axis of this fiber is the propagation axis.Secondly,the radius of the inscribed circle is decided by both incident angle and incident position,and its variation is between 0 and RM,where RM is the radius of the multimode fiber.Lastly,the bigger the ratio of core and cladding diameter is,the higher the propagation efficiency is.