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High-Power Single-Mode Trench-assisted EDFA

机译:大功率单模沟道辅助EDFA

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摘要

A trench assisted, 0.15-NA, effective single mode leaky Erbium Doped Fiber Amplifier is proposed for high power applications. The segmented-core of the fiber enables to achieve 783 μm~2 mode area which reduces nonlinearity and increases power handling capacity of the fiber. The leakage loss of the modes is controlled by annular core segments and low index trench in the cladding. The leakage loss of the LP_(11) mode is 10.49 dB/m and that of the fundamental mode is 0.017 dB/m at 1530 nm wavelength. We have injected 20 mW power into each mode and have calculated the gain for 26 m length of the fiber using 250 W pump at 980 nm wavelength. The signal power in the LP_(01) mode is amplified to 122 W and that in the LP_(11) mode drops down to 5.78×10~(-27) W. The low output signal power in LP_(11) mode ensures selective single mode amplification of fundamental mode. Selective single mode amplification confirms good beam quality at the output end.
机译:提出了一种沟槽辅助,0.15NA,有效的单模泄漏掺leak光纤放大器,用于大功率应用。光纤的分段纤芯可以实现783μm〜2的模面积,从而减少非线性并增加光纤的功率处理能力。模式的泄漏损耗由包层中的环形芯段和低折射率沟槽控制。在1530 nm波长下,LP_(11)模式的泄漏损耗为10.49 dB / m,而基本模式的泄漏损耗为0.017 dB / m。我们向每种模式注入了20 mW的功率,并使用250 W泵浦在980 nm波长下计算了26 m长度的光纤的增益。 LP_(01)模式下的信号功率放大到122 W,LP_(11)模式下的信号功率下降到5.78×10〜(-27)W。LP_(11)模式下的低输出信号功率确保了选择性基本模式的单模放大。选择性单模放大可确保输出端的光束质量良好。

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