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Study of the pump absorption efficiency in D-shaped double clad optical fiber

机译:D形双包层光纤泵浦吸收效率的研究

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摘要

In this paper, we evaluate numerically the pump absorption efficiency in a D-shaped fiber. The study is carried out through the ray tracing method in three dimensions. The simulation results show that D-shaped fiber has higher pump power absorption when the core is place off the geometric center of the inner cladding. On the other hand, when the incidence of the pump beam is off the geometrical center of the fiber cross-section or the angle of incidence increases, the pump absorption efficiency decreases in a circular-shaped fiber, while in D-shaped fiber it is higher and is kept constant.
机译:在本文中,我们对D形纤维中的泵浦吸收效率进行了数值评估。该研究是通过三维射线追踪方法进行的。仿真结果表明,当纤芯偏离内包层的几何中心时,D形光纤具有更高的泵浦吸收功率。另一方面,当泵浦光束的入射角偏离纤维横截面的几何中心或入射角增加时,圆形纤维中的泵浦吸收效率会降低,而D形纤维中则是更高,并保持恒定。

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