城市微区电波传播特性研究  

Tapered Single Mode Fiber Passive Device Manufactured with Hermetically Carbon Coated Optical Fiber

作　　者：盛严[1] 余翔林[1] 刘粉山[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系

出　　处：《中国科学技术大学学报》1999年第1期83-88,共6页JUSTC

摘　　要：阐述了一种三维电波传播模型来预测城市环境下的传播损耗．该模型建立在几何光学理论和几何绕射理论的基础上，模型考虑了地面和墙壁的反射，建筑物墙角和屋顶的绕射。A new fused tapered fiber passive device made up of carbon coated optical fiber is reported. Under the control of the technology of fused taper, the optical characteristics of the new device are commensurate with the devices manufactured with ordinary optical fiber and the insert loss of the device is less than 0.1dB. The carbon coated optical fiber has excellent strength and anti fatigue capability, which greatly improves the long term reliability of the new device in adverse environments.

关 键 词：路径损耗 几何绕射 蜂窝移动通信 电磁波传播 

分 类 号：TN929.5[电子电信—通信与信息系统]