Experimental evidence for supercontinuum generation by fission of higher-order solitons in photonic crystal fibers
Experimental evidence for supercontinuum generation by fission of higher-order solitons in photonic crystal fibers
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光子晶体光纤中高阶孤子裂变产生超连续谱的实验证据
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
Russel
中科院分区：
文献类型：
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作者：
Herrmann;Griebner;Zhavoronkov;Husakou;Korn;Knight;Wadsworth;Russel
仅给出摘要表格。光子晶体光纤（PCF）目前是人们高度关注的话题，因为它们具有不同寻常的光学特性以及在重要应用（例如光纤、光纤、光纤等）方面的巨大潜力。频率计量。由于 PCF 具有新颖的色散特性，例如将零色散波长移至可见光区域，因此出现了在标准光纤中无法观察到的非线性光学效应的新特征。其中一种现象是低能量脉冲产生覆盖两个以上八度音阶的超宽带超连续谱 (SC)。相比之下，标准光纤中 SC 的产生需要高两个数量级以上的初始峰值强度。在这里，我们提出了实验证据，表明 PCF 中低强度 SC 的产生是由以前未知的超宽光谱展宽机制引起的。在PCF中观察到的低强度光谱展宽不能用SPM对低能脉冲的影响来解释。最近的理论工作给出了一个令人惊讶的解释：反常色散区域中SC的产生是由高阶孤子裂变为基本孤子引起的。与较短脉冲更有利的 SPM 形成鲜明对比的是，通过 N 孤子裂变产生 SC 对于长脉冲更有效，这可以用作孤子诱导 SC 生成的测试。
Summary form only given. Photonic crystal fibers (PCF) are currently a topic of high interest because of their unusual optical properties and their large potential for important applications such as e.g. frequency metrology. As a result of the novel dispersion characteristics of PCFs such as a shift of the zero-dispersion wavelength into the visible region, new features in nonlinear optical effects arise that can not be observed in standard optical fibers. One such phenomenon is the generation of an extremely broadband supercontinuum (SC) covering more than two octaves from low-energy pulses. In comparison, SC generation in standard fibers requires more than two orders of magnitude higher initial peak intensities. Here we present the experimental evidence that low-intensity SC generation in PCFs is caused by a previously unknown mechanism for ultra-wide spectral broadening. The low-intensity spectral broadening observed in PCFs can not be explained by the effect of SPM for low-energy pulses Recent theoretical work has given a surprising explanation: SC generation in the anomalous dispersion region is caused by fission of higher-order solitons into fundamental solitons. In direct contrast to SPM, for which shorter pulses are more favorable, SC generation by fission of N-solitons is more effective for long pulses, which can be used as a test for soliton-induced SC generation.