| 高折射率芯Bragg光纤瑞利散射特性的数值分析 |
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| 引用本文： | 张方迪,刘小毅,张民,叶培大.高折射率芯Bragg光纤瑞利散射特性的数值分析[J].吉首大学学报(自然科学版),2006,27(6):64-68. |
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| 作者姓名： | 张方迪 刘小毅 张民 叶培大 |
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| 作者单位： | 北京邮电大学电信工程学院,北京,100876;北京邮电大学电信工程学院,北京,100876;北京邮电大学电信工程学院,北京,100876;北京邮电大学电信工程学院,北京,100876 |
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| 摘 要： | 基于瑞利散射理论，运用全矢量有限元方法，分析了F掺杂以及GeO2掺杂高折射率芯Bragg光纤(HICBF)的瑞利散射特性.研究结果表明：对于F和GeO2这2种典型掺杂HICBF，光纤结构对瑞利散射损耗影响正好相反.GeO2掺杂HICBF的分析中还发现，在芯径一定的情况下，调整的包层结构可以使瑞利散射损耗降到最低.该结论同样适用于其他类似掺杂类型HICBF.
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| 关 键 词： | Bragg光纤 瑞利散射 瑞利散射系数 有限元 |
| 文章编号： | 1007-2985（2006）06-0064-05 |
| 收稿时间： | 2006-10-20 |
| 修稿时间： | 2006年10月20 |
Numerical Study on Rayleigh Scattering Property in High-Index-Core Bragg Fibers |
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| ZHANG Fang-di,LIU Xiao-yi,ZHANG Min,YE Pei-da.Numerical Study on Rayleigh Scattering Property in High-Index-Core Bragg Fibers[J].Journal of Jishou University(Natural Science Edition),2006,27(6):64-68. |
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| Authors: | ZHANG Fang-di LIU Xiao-yi ZHANG Min YE Pei-da |
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| Institution: | (School of Telecommunication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China) |
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| Abstract: | An analytical model for Rayleigh scattering in fibers is presented based on a full-vector finite element method(FEM) with edge/nodal hybrid element.By using this model,the Rayleigh scattering property of F-doped and GeO_2-doped high-index-core bragg fibers(HICBF) is investigated.Numerical results show that the effects of fiber structure on Rayleigh scattering in F-doped HICBF are quite opposite to that in GeO_2-doped HICBF.By adjusting the cladding structure,minimized Rayleigh scattering loss(RSL) can be obtained in GeO_2-doped HICBF with a certain high-index core radius.Conclusion in this paper is also suitable for other doped HICBF. |
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| Keywords: | Bragg fiber rayleigh scattering rayleigh scattering coefficient finite element |
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