Beam splitting of high-order Gaussian (HOG) beams increases the channel capacity and improves the processing speed of the incoming information. Here a novel all-optical tunable multi-port HOG beam splitter under a periodic dielectric atomic structure is proposed and demonstrated. The original HOG beam is replicated in the output beams. A distinguishable five-port output beam is observed in the experiment, which is beneficial for high-speed optical communications. By tuning the optical properties of this periodic dielectric structure, the spatial position and intensity distribution of each output port are precisely controllable. The splitting ratio δ can be finely adjusted in the range 0 – 4.8. This work provides a new approach for multi-port HOG beam splitters and the basis for all-optical communication.

中文翻译：

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基于周期性介电原子结构的全光可调谐高阶高斯分束器

高阶高斯 (HOG) 光束的分束增加了信道容量并提高了传入信息的处理速度。这里提出并展示了一种在周期性介电原子结构下的新型全光可调多端口 HOG 分束器。原始 HOG 光束被复制到输出光束中。实验中观察到可区分的五端口输出光束，有利于高速光通信。通过调整这种周期性介电结构的光学特性，可以精确控制每个输出端口的空间位置和强度分布。分光比δ可在0-4.8范围内微调。这项工作为多端口 HOG 分束器提供了一种新方法，并为全光通信奠定了基础。