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arXiv 1606.09601physics.optics
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光纤放大器中孤子级联的动力学特性

Dynamics of Soliton Cascades in Fiber Amplifiers

F. R. Arteaga-Sierra, A. Antikainen, Govind P. Agrawal

摘要:

我们数值研究了飞秒光脉冲被发射到光纤放大器时级联孤子的形成,所需的能量小于形成等持续时间的孤子所需的能量。当脉冲被放大时,级联的基本孤子在不同的距离处产生,而没有孤子分裂,因为每个基本孤子通过拉曼诱导的光谱位移移动到增益带宽之外。结果,每个输入脉冲在放大器输出端产生多个时间上分离的不同波长的超短脉冲。脉冲的数目不仅取决于放大器的总增益,而且取决于输入脉冲的宽度。

英文摘要:

We study numerically the formation of cascading solitons when femtosecond optical pulses are launched into a fiber amplifier with less energy than required to form a soliton of equal duration. As the pulse is amplified, cascaded fundamental solitons are created at different distances, without soliton fission, as each fundamental soliton moves outside the gain bandwidth through the Raman-induced spectral shifts. As a result, each input pulse creates multiple, temporally separated, ultrashort pulses of different wavelengths at the amplifier output. The number of pulses depends not only on the total gain of the amplifier but also on the width of input pulses.

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