驱动laser中作为可寻址相位位的拓扑孤子
Topological solitons as addressable phase bits in a driven laser
摘要：
光学定域态通常被定义为光的自定域量子包，它以独立可控的光强脉冲形式存在于非线性光学系统的纵向或横向。在这里，我们提供了第一个实验和分析证明存在的纵向局域态，基本上存在于激光的相位。这些鲁棒且通用的相位位可以在注入锁定的半导体激光器中被单独成核和消除，该注入锁定的半导体激光器在类神经元的可激发状态下操作并且被提交延迟反馈。他们的控制演示开辟了道路，他们作为相位信息单元在下一代相干通信系统的使用。我们分析了我们的意见，确认相位位的拓扑性质，并揭示了其正式的，但深刻的类比与正弦戈登孤子的一个通用模型。
英文摘要：
Optical localized states are usually defined as self-localized bistable packets of light which exist as independently controllable optical intensity pulses either in the longitudinal or transverse dimension of nonlinear optical systems. Here we provide the first experimental and analytical demonstration of the existence of longitudinal localized states which exist fundamentally in the phase of laser light. These robust and versatile phase bits can be individually nucleated and canceled in an injection-locked semiconductor laser operated in a neuron- like excitable regime and submitted to delayed feedback. The demonstration of their control opens the way to their use as phase information units in next generation coherent communication systems. We analyze our observations in terms of a generic model which confirms the topological nature of the phase bits and discloses their formal but profound analogy with Sine-Gordon solitons.
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