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建立了复折射率纤芯结合有限差分束传播法的双包层稀土掺杂光纤抽运吸收效率数值模型,利用该模型对几种常用内包层外边界结构下双包层稀土掺杂光纤的抽运吸收系数进行了详细的分析,得出相应双包层光纤的抽运吸收特性.分析结果对双包层稀土掺杂光纤的优化设计具有重要的指导意义.
The numerical model of pumping efficiency of double-clad rare earth-doped fibers with birefringent core and finite difference beam propagating method is established. By using this model, the pumping of double-clad rare earth-doped fibers The absorption coefficient of the double clad fiber is analyzed in detail, and the pumping absorption characteristics of the corresponding double clad fiber are obtained.The results of the analysis have important guiding significance for the optimal design of the double clad rare earth doped fiber.