多模光纤偏心激励的横截面场分布  

Cross-Sectional Power Distribution of Offset Launched Multimode Optical Fiber

作　　者：毕晓峰[1] 杨春[1] 管志强[1] 

机构地区：[1]东南大学电子工程系,南京210096

出　　处：《电子器件》2004年第1期184-188,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金(60007005);江苏省创新人才资助项目(BK2003406)

摘　　要：计算并测量了阶跃多模光纤偏心激励的横截面场分布。用光线追迹法计算了不同的激励源偏心距离和光纤长度时,光纤出射端横截面的场分布。用CMOS光探测器阵列测量了大芯径、大数值孔径多模聚合物光纤在不同的激励源偏心距离和光纤长度时,光纤出射端横截面的场分布。数值计算和实验测量的结果一致表明,随着激励源偏心距的增加,高阶模被激励的比例增加;随着传输长度的增加,场分布的圆周方向均匀性趋于一致。Optical power distribution of offset - launched multimode optical fiber is calculated and measured. Cross -sectional power distribution of the multimode optical fiber is calculated by the ray tracing method and measured by the CMOS optical detector array, in the case of different offsets and different length of the optical fiber. The results of the numerical calculation and experimental measurement consistently indicate that more high order modes are excited with growing of the launching offset and the angular uniformity of the power distribution increases with the length of the optical fiber.

关 键 词：光纤 偏心激励 场分布 光线追迹法 

分 类 号：TN25[电子电信—物理电子学] TN9292.1