论文标题
通过旋转的声音引导：通向单向声音旋转纤维的途径
Sound Waveguiding by Spinning: An Avenue towards Unidirectional Acoustic Spinning Fibers
论文作者
论文摘要
在具有横向“不连续性”或折射率调制的条件下，尤其是在折射率的条件下，尤其是声波引导。我们在这里提出了一种根本不同的方法，该方法依赖于在一列空气上施加旋转，从而导致特定方位角模式的高修饰声折射率。可以利用这种发现，不仅要实现光纤的空气声音对应物，即声旋转纤维（ASF），还可以实现非偏置的单向波引导机制，还让人想起“声学Zeeman效应”。该概念在声学领域中得到了证明，但它可以适用于其他波系统，例如光子学或弹性动力学。
Waveguiding in general and acoustic waveguiding in particular are possible at the condition of having a transverse "discontinuity" or modulation of the refractive index. We propose here a radically different approach that relies on imposing spinning on a column of air, leading to high modified acoustic refractive indices for specific azimuthal modes. Such discovery may be leveraged to realize not only the airborne acoustic counterpart of the optical fiber, i.e., the acoustic spinning fiber (ASF), but also nonreciprocal unidirectional waveguiding mechanism, reminiscent of the ''acoustic Zeeman effect''. The concept is demonstrated in the realm of acoustics, yet it can be applicable to other wave systems, e.g., photonics or elastodynamics.
