Lin Guoping, Martinenghi Romain, Diallo Souleymane, Saleh Khaldoun, Coillet Aurélien, Chembo Yanne K
Appl Opt. 2015 Mar 20;54(9):2407-12. doi: 10.1364/AO.54.002407.
We report a joint theoretical and experimental investigation of the parametric seeding of a primary Kerr optical frequency comb. Electro-optic modulation sidebands matching multiple free-spectral ranges of an ultrahigh-Q millimeter-size magnesium fluoride disk resonator are used as seed signals. These seed signals interact through four-wave mixing with the spectral components of a stable primary comb and give rise to complex spectro-temporal patterns. We show that the new frequency combs feature multiscale frequency spacing, with major frequency gaps in the order of a few hundred gigahertz, and minor frequency spacing in the order of a few tens of gigahertz. The experimental results are in agreement with numerical simulations using the Lugiato-Lefever equation. We expect such versatile and coherent optical frequency combs to have potential applications in optical communications systems where frequency management assigns predefined spectral windows at the emitter stage.
我们报告了一项关于初级克尔光学频率梳的参量种子注入的联合理论与实验研究。电光调制边带与超高Q值毫米尺寸氟化镁盘式谐振器的多个自由光谱范围相匹配，被用作种子信号。这些种子信号通过四波混频与稳定初级频率梳的光谱成分相互作用，产生复杂的光谱-时间模式。我们表明，新的频率梳具有多尺度频率间隔，主要频率间隔在几百吉赫兹量级，次要频率间隔在几十吉赫兹量级。实验结果与使用Lugiato-Lefever方程的数值模拟结果一致。我们预计这种多功能且相干的光学频率梳在光通信系统中具有潜在应用，在该系统中频率管理在发射端分配预定义的光谱窗口。
