APD空间分集在近场无线光通信中的应用  

Application of APD spatial-diversity reception in close-range wireless laser communication

作　　者：叶序 赵江南[1] 艾勇[1] 李谟罕 张晓伟 YE Xu;ZHAO Jiangnan;AI Yong;LI Mohan;ZHANG Xiaowei(School of Electronic Information,Wuhan University,Wuhan 430079,China)

机构地区：[1]武汉大学电子信息学院,武汉430079

出　　处：《光通信技术》2018年第9期41-43,共3页Optical Communication Technology

摘　　要：近场无线光通信具有抗干扰性好、不占无线电频段、保密性良好和通信速率高等诸多优点,相比于中远距离大气光通信避免了大气衰减、大气湍流影响等问题,具有广阔应用前景。针对近距离无线光通信系统中跟瞄及控制难点问题,提出在接收端采用光信号空间分集接收的方法改善系统通信效率,设计了一种基于雪崩光电二极管(APD)的空间阵列分集光探测器,通过实验和仿真证明了设计的有效性,同时将该设计成功应用于头戴式近距离激光通信设备中。Close-range wireless optical communication has many advantages such as good anti-jamming, no radio frequency, good secrecy and high communication rate. Compared to the medium distance atmospheric optical communication, it also avoids the atmospheric attenuation and atmospheric turbulence, and has a broad application prospect. Aiming at the difficulty of tracking and controlling in the near distance wireless optical communication system, this paper proposes spatial-diversity reception to improve the communication efficiency of the system. A spatial-diversity reception based on avalanche photodiode（APD） is designed. The effectiveness of the design is proved through experiment and simulation. This design is successfully applied to the head mounted proximity laser communication equipment.

关 键 词：光通信 空间分集接收 雪崩光电二极管 

分 类 号：TN929.12[电子电信—通信与信息系统]