A spinning optical resonator is an excellent platform for realizing nonreciprocity. Here, we demonstrate the distinctive isolation features in spinning indirectly coupled resonators, where the nonreciprocal light propagation and probing mechanism via mechanical rotation have been achieved. Interplay with nanoparticles induces a tunable one- or two-way transmission through differential rotation, which can also be employed to realize the improved capability of particle detection. By pushing an individual resonator into a rotation-induced exceptional point (EP) condition, an EP associated isolation pattern is observed with avoided crossing. Our results may promote the development and understanding of nonreciprocity, rotation devices and anti-parity-time symmetry.

旋转光谐振器是实现非互易性的绝佳平台。在这里，我们展示了旋转间接耦合谐振器的独特隔离特性，其中通过机械旋转实现了非互易光传播和探测机制。与纳米粒子的相互作用通过差动旋转诱导可调谐的单向或双向传输，这也可用于实现改进的粒子检测能力。通过将单个谐振器推入旋转引起的异常点 (EP) 条件，可以观察到与 EP 相关的隔离模式，并避免交叉。我们的结果可能会促进对非互易性、旋转装置和反奇偶时间对称性的发展和理解。