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首页> 外文期刊>IEEE Journal of Quantum Electronics >Optimum design of Er/sup 3+/-Yb/sup 3+/ codoped fibers for large-signal high-pump-power applications
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Optimum design of Er/sup 3+/-Yb/sup 3+/ codoped fibers for large-signal high-pump-power applications

机译:大信号高泵浦功率应用中Er / sup 3 +/- Yb / sup 3 + /共掺杂光纤的最佳设计

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摘要

A comprehensive numerical fiber amplifier model has been used to optimize Er/sup 3+/-Yb/sup 3+/ codoped active fiber for maximum gain and quantum conversion efficiency (QCE) at large signal operation. The optimum cutoff wavelength of the LP/sub 11/ mode has been found to increase from 800 mm at low pump powers (/spl ap/50 mW) to 1400 mn at pump powers higher than 500 mW. While at low pump powers fibers with higher numerical aperture give higher QCE, at high pump levels better large signal performance is achieved with fibers having lower numerical aperture.
机译:全面的数值光纤放大器模型已用于优化Er / sup 3 +/- Yb / sup 3 + /共掺杂有源光纤,以在大信号操作下获得最大增益和量子转换效率(QCE)。已发现LP / sub 11 /模式的最佳截止波长从低泵浦功率(/ spl ap / 50 mW)时的800 mm增加到高于500 mW泵浦功率时的1400 mn。虽然在低泵浦功率下,具有较高数值孔径的光纤会提供较高的QCE,但在高泵浦电平下,具有较低数值孔径的光纤可获得更好的大信号性能。

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