基于APD的紫外光语音通信系统设计  

Design and realization of APD-based UV speech communication system

作　　者：王荣阳[1] 袁永刚[1,2] 李向阳[1,2] 

机构地区：[1]中国科学院上海技术物理研究所传感技术国家重点实验室,上海200083 [2]中国科学院上海技术物理研究所中国科学院红外成像材料与器件重点实验室,上海200083

出　　处：《光通信技术》2011年第10期24-27,共4页Optical Communication Technology

基　　金：国家自然科学基金(60807037;60708028)资助

摘　　要：设计了一套基于雪崩光电二极管(APD)的紫外光语音通信系统,系统分为硬件电路、软件和光学系统三个部分。采用先进多带激励(AMBE)编码和开关键控(OOK)调制技术,使语音通信速率降低到2.5kb/s。实验表明,该系统在光功率仅为纳瓦量级时仍能完成实时语音通信,系统的研制对日盲APD的制造和应用具有现实的指导意义。Based on the avalanche photodiode （APD）, an UV speech communication system was established. The system consisted of three parts, which were hardware circuits, software and optical system. Advanced Multi-Band Excitation （AMBE） codec and On-off Keying （OOK） modulation scheme were adopted to compress the data rate as low as 2.5kb/s. The indoor experiment results indicated that real time NLOS speech communication could be implemented even the received optical power was only several nanowatt. The development of UV speech communication system is of importance to the application and fabrication of solar-blind APD.

关 键 词：紫外光通信 APD AMBE2020 紫外LED 

分 类 号：TN929.12[电子电信—通信与信息系统]