提出一种新的机制实现光延迟,构造了含单向边界回路和单向空气波导的复合波导。电磁波传播通过边界回路时,其单向传播和干涉相长效应使电磁波绕过 这些回路达到完美传输,这些回路由于增加了额外传播距离而导致光延迟。该复合波导的独特之处在于它拥有光延迟、单向传播和克服散射损耗的复合功能。频域 和时域仿真分别论证了其完美传输和时间延迟功能。

A new mechanism to achieve optical delay is proposed. A compound waveguide with unidirectional boundary loop and unidirectional air waveguide is constructed. When the electromagnetic wave propagates through the boundary loop, its one-way transmission and the constructive interference effect make the electromagnetic wave around these loops to achieve the perfect transmission. These loops lead to optical delay because of the enlarged propagation distance. The unique feature of the composite waveguide is that it has compound functions, such as optical delay, one-way transmission and overcoming scattering loss. The frequency-domain and time-domain simulation demonstrates the perfect transmission and time delay function, respectively.