| 用拉盖尔—高斯函数展开方法计算梯度型单模光纤特性参数 |
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| 引用本文： | 王子华,易斐章.用拉盖尔—高斯函数展开方法计算梯度型单模光纤特性参数[J].光电子．激光,2002,13(8):795-798. |
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| 作者姓名： | 王子华 易斐章 |
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| 作者单位： | 1. 上海大学通信学院,上海,200072
2. 桂林电子工业学院计算机分院,广西,桂林,541004 |
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| 基金项目： | Project Supported by Science Development Foundation of Shanghai Education Committee(2 0 0 0 A18) and Key Science Pro-gram of Shanghai(2 0 0 14 4) |
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| 摘 要： | 用拉盖尔－高斯函数展开方法计算梯度型单模光纤特性参数。应用拉盖尔多项式性质和汉克尔变换来计算光纤参数：如远场模斑尺寸和波导色散，得到了非常简单且物理概念清晰的表达式。给出了数值计算实例并与精确值进行了比较，讨论了该方法的优点和缺点。
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| 关 键 词： | 远场 模斑尺寸 拉盖尔－高斯函数 展开方法 计算 梯度型单模光纤 特性参数 |
Characterization of Single-mode Graded-index Fibers by Expanding Modal Fields in Laguerre-Gaussian Functions |
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| WANG Zi hu,YI Fei zhang.Characterization of Single-mode Graded-index Fibers by Expanding Modal Fields in Laguerre-Gaussian Functions[J].Journal of Optoelectronics·laser,2002,13(8):795-798. |
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| Authors: | WANG Zi hu YI Fei zhang |
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| Affiliation: | WANG Zi hua 1,YI Fei zhang 2 |
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| Abstract: | The characterization of single mode graded index fibers by expanding modal fields in Laquerre Gaussian functions has been presented.Applying properties of Laguerre polynomials suitably and Hankel transform theory,fiber parameters,such as far field,spot size have been calculated.The final expressions are very simple and without loss of physics insight of view.Numerical examples for calculation of these fiber parameters are given and compared with exact results.Merits and the defects of by using this method have been discussed. |
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| Keywords: | Single mode fiber Laguerre Gaussian function Far field Spot size |
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