| 用边界反射原理计算双包层光纤的吸收效率 |
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| 引用本文： | 徐晟,王子华. 用边界反射原理计算双包层光纤的吸收效率[J]. 激光技术, 2004, 28(6): 633-635 |
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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;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 (6 0 2 770 2 5 )，上海市重点学科建设资助项目 (2 0 0 1 4 4 ) |
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| 摘 要： | 以双包层光纤(DCF)中内外包层分界面上的点作为研究对象,对于分界面上的任意一点运用边界反射原理,确定在内包层截面中,能发出被掺杂纤芯吸收的光线的点源所占有的面积,将此面积与内包层总截面积作一比较,算出这一点对双包层光纤吸收效率的贡献。按该方法计算内外包层分界面上每一点对吸收效率的贡献并取平均,最后可求得双包层光纤的总吸收效率。讨论了双包层光纤的圆对称和偏心两种情况,结果与已有文献中的结论完全一致,但这种方法的计算过程更为简便。
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| 关 键 词： | 双包层光纤 内外包层分界面 边界反射原理 吸收效率 |
| 文章编号： | 1001-3806(2004)06-0633-03 |
| 收稿时间： | 2003-10-23 |
| 修稿时间： | 2003-10-23 |
Calculating the absorption efficiency of double-clad fiber based on the theory of boundary reflection |
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| XU Sheng,WANG Zi-hua. Calculating the absorption efficiency of double-clad fiber based on the theory of boundary reflection[J]. Laser Technology, 2004, 28(6): 633-635 |
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| Authors: | XU Sheng WANG Zi-hua |
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| Abstract: | The theory of boundary reflection is used for arbitr ar y dots in the interface of the first and second cladding of double-clad fiber ( DCF) to confirm the area where the light source emits the rays that can be absor bed by the RE-doped core.Then the absorption efficiency of the dot will be obta ined if this area is compared with the whole area of the first cladding.In order to calculate the whole absorption efficiency of DCF,the absorption efficiency of every dot in the interface of the first and second cladding of DCF should be calculated and synthesized.The conclusions of absorption efficiency of circular DCF and offset DCF completely accord with the results calculated by another ray method.However the process of this method is very handy. |
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| Keywords: | double-clad fiber interface of the first an d second cladding theory of boundary reflection absorption efficiency |
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