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阶跃折射率塑料光纤的弯曲损耗分析

发表时间:2008-04-15  浏览量:1795  下载量:791
全部作者: 孔祥泽,李蔚
作者单位: 北京邮电大学电信工程学院
摘 要: 本文利用几何光学的方法分析了阶跃折射率塑料光纤的弯曲损耗。阶跃折射率光纤中的辐射损耗发生在光线反射点,可以由隧道光和折射光的功率透射系数T推导出弯曲损耗表达式。数值仿真显示阶跃折射率塑料光纤在弯曲半径小于20 mm时有较大的损耗。最后由弯曲损耗曲线得出阶跃折射率塑料光纤测量中所用扰模器的最佳尺寸。
关 键 词: 光学;塑料光纤弯曲损耗;阶跃折射率;隧道光线;功率透射系数;扰模器
Title: Analysis of step-index plastic optical fiber bending loss
Author: KONG Xiangze, LI Wei
Organization: School of Telecommunication Engineering, Beijing University of Posts and Telecommunications
Abstract: This paper analyses the bending loss of step-index plastic optical fiber(POF) using geometric approach. The radiation loss only occurs at reflection points, and can be described by the power-transmission coefficient T which is different for tunnelling and refracting rays. A numerical simulation shows that the bending loss of step-index POF becomes larger as the curve radius is less than 20 mm. This result is helpful to design a mode scrambler which is used in step-index POF measurements.
Key words: optical; plastic optical fiber bending loss; step-index; tunnelling ray; power-transmission coefficient; mode scrambler
发表期数: 2008年8月第7期
引用格式: 孔祥泽,李蔚. 阶跃折射率塑料光纤的弯曲损耗分析[J]. 中国科技论文在线精品论文,2008,1(7):838-843.
 
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