| 渐变折射率双包层光纤吸收效率的波动理论分析 |
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| 引用本文： | 徐晟,王子华.渐变折射率双包层光纤吸收效率的波动理论分析[J].光电子．激光,2004,15(7):771-774. |
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| 作者姓名： | 徐晟 王子华 |
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| 作者单位： | 上海大学通信与信息工程学院,上海,200072 |
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| 基金项目： | 国家自然科学基金资助项目(60277025)，上海市重点学科建设资助项目(2001-44) |
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| 摘 要： | 用已知的积分公式计算了光纤中的总模数；用WKN方法推导了2个积分，分别用以计算两部分不能被双包层光纤(DCF)纤芯吸收的模式数量；最后将不被吸收的模式数与光纤总传播模式数作比较，得出渐变折射率DCF的吸收效率。给出了计算实例．讨论了吸收效率与渐变折射率参数及纤芯偏心距离之间的关系。
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| 关 键 词： | 渐变折射率 双包层光纤 吸收效率 波动理论 WKBJ |
| 文章编号： | 1005-0086(2004)07-0771-04 |
Analysis of the Absorption Efficiency of Graded-index Double-clad Fiber Using Wave Theory |
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| XU Sheng.Analysis of the Absorption Efficiency of Graded-index Double-clad Fiber Using Wave Theory[J].Journal of Optoelectronics·laser,2004,15(7):771-774. |
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| Authors: | XU Sheng |
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| Abstract: | First,the number of all the propagating modes has been calculated by an integral formula already known.Then two integrals have been derived by using WKBJ method to calculate the number of two different parts of modes which are not absorbed by the core of double-clad fiber(DCF).According to the number of non-absorbable modes and the number of all the propagating modes,we have obtained the absorption efficiency of graded-index DCF.Numerical examples have been given.Based on calculated results,how the graded-index parameter of offset distance affects the absorption efficiency has been discussed too. |
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| Keywords: | graded-index double-clad fiber(DCF) wave theory WKBJ method absorption efficiency |
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