Rotary propagation characteristics of light in multimodesingle mode-multimode fiber structures using ray tracing method  

作　　者：郜洪云 吴紫薇 许哲雄言 黎敏 

机构地区：[1]Department of Physics,Wuhan University of Technology

出　　处：《Optoelectronics Letters》2015年第4期294-297,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61177076);the Fundamental Research Funds for the Central Universities(Nos.2013-Ia-038 and 2013-Ia-006)

摘　　要：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.

关 键 词：tracing circle Rotary incident cladding decided propagate radius projection coordinates 

分 类 号：TN253[电子电信—物理电子学]