Abstract. By using the orthogonality of the orbital angular momentum (OAM) beam and the characteristics of its annular intensity distribution, a method for separating the OAM beam from the Gaussian beam is proposed. This method uses a dual-area mirror in an OAM multiplexed data link. Experiments show that the topological charge of the multiplexed OAM beams can be reconfigured with the aid of a dual-area mirror. Compared with previous separation methods, this method is low cost, easy to implement, easy to integrate, and can freely control the direction of the separated beam. Furthermore, it can considerably reduce the optical power loss and is expected to reduce the bit error rate in the optical communication link.

中文翻译：

---

双面镜辅助的可重构轨道角动量交换

摘要。利用轨道角动量(OAM)光束的正交性及其环形强度分布的特点，提出了一种OAM光束与高斯光束的分离方法。该方法在 OAM 复用数据链路中使用双区域镜像。实验表明，复用的 OAM 光束的拓扑电荷可以在双区域镜的帮助下重新配置。与以往的分离方法相比，这种方法成本低，易于实现，易于集成，可以自由控制分离光束的方向。此外，它可以显着降低光功率损耗，有望降低光通信链路中的误码率。