多模梯度折射率塑料光纤带宽的分析  

ANALYSIS OF BANDWIDTH OF MULTI-MODE GI-POF

作　　者：刘凯[1] 于荣金[1] 

机构地区：[1]燕山大学信息科学与工程学院,秦皇岛066004

出　　处：《光子学报》2002年第7期819-823,共5页Acta Photonica Sinica

基　　金：河北省科技专项资金资助项目

摘　　要：结合 WKB法对多模梯度折射率塑料光纤 ( GI- POF)色散和带宽进行了综合分析 ,研究了在 GI- POF中材料色散对带宽影响的程度和规律 ,给出较佳折射率指数 ( g)的范围 。It analyzes comprehensively all dispersion factors(such as modal,material,waveguide and profile dispersion properties)and differential mode attenuation affecting the bandwidth characteristics of multi mode GI POF by means of WKB method.The influence of the material dispersion on the bandwidth in multi mode GI POF is investigated.The better range of index exponent g for achievement of the required bandwidth is given.The main reason that the actual bandwidth is wider than the theoretical bandwidth is taken into account.

关 键 词：多模梯度折射率 塑料光纤 带宽 材料色散 模间色散 模内色散 微分模式衰减 光纤通信 

分 类 号：TN25[电子电信—物理电子学] TN929.11