Fatome Julien, Kibler Bertrand, Leo François, Bendahmane Abdelkrim, Oppo Gian-Luca, Garbin Bruno, Murdoch Stuart G, Erkintalo Miro, Coen Stéphane
Opt Lett. 2020 Sep 15;45(18):5069-5072. doi: 10.1364/OL.400474.
We report on the experimental and numerical observation of polarization modulation instability (PMI) in a nonlinear fiber Kerr resonator. This phenomenon is phased-matched through the relative phase detuning between the intracavity fields associated with the two principal polarization modes of the cavity. Our experimental investigation is based on a 12 m long fiber ring resonator in which a polarization controller is inserted to finely control the level of intracavity birefringence. Depending on the amount of birefringence, the temporal patterns generated via PMI are found to be either stationary or to exhibit a period-doubled dynamics. The experimental results are in good agreement with numerical simulations based on an Ikeda map for the two orthogonally polarized modes. This Letter provides new insights into the control of modulation instability in multimode Kerr resonators.
我们报告了在非线性光纤克尔谐振器中对偏振调制不稳定性（PMI）的实验和数值观测。这种现象通过与腔的两个主要偏振模式相关的腔内场之间的相对相位失谐实现相位匹配。我们的实验研究基于一个12米长的光纤环形谐振器，其中插入了一个偏振控制器以精细控制腔内双折射水平。根据双折射量的不同，发现通过PMI产生的时间模式要么是稳定的，要么呈现倍周期动力学。实验结果与基于两个正交偏振模式的池田映射的数值模拟结果吻合良好。本信函为多模克尔谐振器中调制不稳定性的控制提供了新的见解。
