论文标题
耦合纤维激光器中的PT对称和PT破裂模式之间的非线性过渡
Nonlinear transition between PT-symmetric and PT-broken modes in coupled fiber lasers
论文作者
论文摘要
我们介绍了由两个耦合纤维腔组成的非线性平价时间（PT）对称激光器的固定状态的系统分析。我们发现，依赖功率的非线性相位变速器拓宽了PT-对称和PT形式模式的存在区域，并可以促进不同类型模式之间的过渡。我们展示了非平稳制度的存在，并证明了某些不稳定状态的过渡过程的歧义。我们还确定了高阶固定模式的存在，该模式在一定数量的往返往返后定期返回到初始状态。
We present a systematic analysis of the stationary regimes of nonlinear parity-time(PT) symmetric laser composed of two coupled fiber cavities. We find that power-dependent nonlinear phase shifters broaden regions of existence of both PT-symmetric and PT-broken modes, and can facilitate transitions between modes of different types. We show the existence of non-stationary regimes and demonstrate an ambiguity of the transition process for some of the unstable states. We also identify the presence of higher-order stationary modes, which return to the initial state periodically after a certain number of round-trips.
