| 城市微区电波传播特性研究 |
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| 引用本文： | 盛严 余翔林. 城市微区电波传播特性研究[J]. 中国科学技术大学学报, 1999, 29(1): 83-88 |
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| 作者姓名： | 盛严 余翔林 |
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| 作者单位： | 中国科学技术大学电子工程与信息科学系 |
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| 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，计算出非视距区域的路径传播损耗
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| 关 键 词： | 路径损耗，传播模型，几何光学理论，几何绕射理论 |
Tapered Single Mode Fiber Passive Device Manufactured with Hermetically Carbon Coated Optical Fiber |
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| ZHU Bing QIAN Jingren Ning Ding Zhao Jinqi. Tapered Single Mode Fiber Passive Device Manufactured with Hermetically Carbon Coated Optical Fiber[J]. Journal of University of Science and Technology of China, 1999, 29(1): 83-88 |
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| Authors: | ZHU Bing QIAN Jingren Ning Ding Zhao Jinqi |
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| Abstract: | 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. |
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| Keywords: | carbon coated optical fiber passive device |
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