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渐变折射率双包层光纤吸收效率的波动理论分析 被引量:3

Analysis of the Absorption Efficiency of Graded-index Double-clad Fiber Using Wave Theory
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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WKBJ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。 First, the number of all the propagating modes has been calculated by an integral formula already known. Then two integrals are 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 obtained the absorption efficiency of graded-index DCF. Numerical examples are given. Based on calculated results, how the graded-index parameter of offset distance affects the absorption efficiency is discussed too.
作者 徐晟 王子华
出处 《光电子.激光》 EI CAS CSCD 北大核心 2004年第7期771-774,共4页 Journal of Optoelectronics·Laser
基金 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)
关键词 渐变折射率 双包层光纤 吸收效率 波动理论 WKBJ Integral equations Light absorption Light amplifiers Numerical methods Optical pumping
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参考文献9

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同被引文献16

  • 1翁巧儿,杨文奎,邢美术.1053 nm光纤光栅的研究[J].光电子.激光,2004,15(z1):221-223. 被引量:1
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  • 5Leproux P,Fevrier S,Doya V,et al.MOdeling and optimization of double-clad fiber amplifiers using chaotic propagation of the pump[J].Optical Fiber Technology,2001,7(4):324-339.
  • 6Liu A,Ueda K.The absorption characteristics of circular,offset,and rectangular double-clad fibers[J].Optics Communications,1996,132:511-518.
  • 7Doya V,Legrand O,Mortessagne F.Optimized absorption in a chaotic double-clad fiber amplifier[J].Optics Letters,2001,26(12):872-874.
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