| 多模光纤带通特性分析 |
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| 引用本文： | 史新亮,胡贵军,檀承志,周翘宇.多模光纤带通特性分析[J].吉林大学学报(信息科学版),2007,25(1):30-35. |
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| 作者姓名： | 史新亮 胡贵军 檀承志 周翘宇 |
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| 作者单位： | 吉林大学,通信工程学院,长春,130012;长春输油分公司,长春,130062 |
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| 摘 要： | 多模光纤存在严重的模式色散，其带宽距离积受限。为此，分析了多模光纤的带通特性。从多模光纤传递函数出发，推导了多模光纤频率响应函数以及频率响应和幅度响应的相关函数，并进行了仿真分析。结果表明，多模光纤频率响应的高频部分相对平坦，由一系列带通区域组成，每个带通区域的带宽与导模的时延有关。仿真实验表，明通过载波复用技术，可以利用这些带通区域进行吉比特容量信息的传输。
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| 关 键 词： | 光纤通信 多模光纤 频率响应 相关函数 |
| 文章编号： | 1671-5896(2007)01-0030-06 |
| 修稿时间： | 2006年5月17日 |
Analysis of Multimode Fiber Band-Pass Characteristics |
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| SHI Xin-liang,HU Gui-jun,TAN Cheng-zhi,ZHOU Qiao-yu.Analysis of Multimode Fiber Band-Pass Characteristics[J].Journal of Jilin University:Information Sci Ed,2007,25(1):30-35. |
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| Authors: | SHI Xin-liang HU Gui-jun TAN Cheng-zhi ZHOU Qiao-yu |
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| Abstract: | Becouse multimode fiber has high modal dispersion which limits to its bandwidth distance product,the band pass characteristics of the multimode fiber was analyzed.From the impulse response of multimode fiber,the frequency response function,correlation function of frequency response and amplitude response at high frequency are obtained.The simulation results indicate that the frequency response of multimode fiber at high frequency is relatively flat.In the high frequency region there are many band pass regions whose bandwidths depend on the delay of guide mode of multimode fiber.By simulating,it is known that these high frequency band pass regions can be used to transmitted Gbit rates signal very well by sub carrier multiplexing. |
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| Keywords: | fiber communication multimode fiber frequency response correlation function |
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