近日，法国里尔大学的Thomas Bunel及其研究团队取得一项新进展。经过不懈努力，他们通过开关波诱导光纤法布里-珀罗谐振器中的宽带克尔频率梳。相关研究成果已于2024年6月27日在国际知名学术期刊《物理评论A》上发表。
该研究团队报道了一种在正常色散状态下，通过开关波激发光纤法布里-珀罗谐振器产生宽带频率梳的方法。他们借助Lugiato-Lefever方程的横向线性稳定性分析，从理论层面对这一过程进行了精确描述，进而能够准确预测开关波的频率。
在实验中，他们使用了脉冲泵浦光纤法布里-珀罗谐振器，该谐振器在正常色散状态下运行，并成功集成至全光纤实验装置中。此外，他们还深入探讨了同步失配和色散的影响，揭示了利用平坦低色散腔产生覆盖15太赫兹带宽的频率梳的潜力。
附：英文原文
Title: Broadband Kerr frequency comb in fiber Fabry-Perot resonators induced by switching waves
Author: Thomas Bunel, Matteo Conforti, Julien Lumeau, Antonin Moreau, Arnaud Mussot
Issue&Volume: 2024/06/27
Abstract: We report the generation of broadband frequency combs in fiber Fabry-Perot resonators in the normal dispersion regime enabled by the excitation of switching waves. We theoretically characterize the process by means of a transverse linear stability analysis of the Lugiato-Lefever equation, enabling precise prediction of the switching waves' frequencies. Experimentally, we employ a pulsed-pump fiber Fabry-Perot resonator operating in the normal dispersion regime, integrated into an all-fiber experimental setup. The synchronization mismatch and the influence of dispersion are thoroughly discussed, unveiling the potential to generate a frequency comb spanning over 15 THz bandwidth, specifically leveraging a flattened low-dispersion cavity.
DOI: 10.1103/PhysRevA.109.063521
Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.109.06352
