Li Long, Xie Guodong, Ren Yongxiong, Ahmed Nisar, Huang Hao, Zhao Zhe, Liao Peicheng, Lavery Martin P J, Yan Yan, Bao ChangJing, Wang Zhe, Willner Asher J, Ashrafi Nima, Ashrafi Solyman, Tur Moshe, Willner Alan E
Appl Opt. 2016 Mar 10;55(8):2098-103. doi: 10.1364/AO.55.002098.
In this paper, we explore the potential benefits and limitations of using transmitter lenses in an orbital-angular-momentum (OAM)-multiplexed free-space optical (FSO) communication link. Both simulation and experimental results indicate that within certain transmission distances, using lenses at the transmitter to focus OAM beams could reduce power loss in OAM-based FSO links and that this improvement might be more significant for higher-order OAM beams. Moreover, the use of transmitter lenses could enhance system tolerance to angular error between transmitter and receiver, but they might degrade tolerance to lateral displacement.
在本文中，我们探讨了在轨道角动量（OAM）复用的自由空间光（FSO）通信链路中使用发射透镜的潜在益处和局限性。仿真和实验结果均表明，在特定传输距离内，在发射端使用透镜聚焦OAM光束可降低基于OAM的FSO链路中的功率损耗，并且这种改善对于高阶OAM光束可能更为显著。此外，发射透镜的使用可增强系统对发射端与接收端之间角度误差的容忍度，但可能会降低对横向位移的容忍度。
