紫外光通讯调制解调系统  

Modulation and Demodulation Systems of Ultraviolet Communication

作　　者：刘宇[1] 肖沙里[1] 徐智敏[1] 李晓毅[2] 赵光[2] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室,重庆400044 [2]解放军重庆通信学院,重庆400035

出　　处：《光电子技术》2006年第4期264-266,271,共4页Optoelectronic Technology

基　　金：军工专项

摘　　要：自由空间紫外光通讯技术基于紫外线日盲特性,相对无线通讯技术具有灵活、难以截获、抗干扰性强等诸多特点,并具备一定的非视距通讯能力,在军事通讯领域有着巨大的优越性。应用调频技术实现对电光信号的调制转换,再通过接收频率变换的紫外光信号,并进行光电转换和频压转换,还原出原始信号。采用该技术研制出的紫外光的通讯系统,传输速率达到1 200 b it/s,误码率小于0.1%,可实现信息的有效传输,传输速率接近国外先进水平。Relative to conventional communication, the technology of ultraviolet communication based on sun-blind characteristic of ultraviolet ray has unique properties, such as non-intercept, powerful interference immunity and non line-of-sight communications,which is of great advantage to military communica- tion. Making use of frequency modulation to implement electro-optic modulation, and receiving ultraviolet light that frequency is variable, signal can been demodulated after photoelectric conversion and F-V eonversion. Applying these technologies, system of ultraviolet communication has been developed successful- ly. The transmission rate is up to 1200 bit/s, error rate is less than 0. 1%. The bit rates of transmission approaches the advanced level of the world.

关 键 词：自由空间光通信 紫外通讯 调频 光电倍增管 

分 类 号：TN76[电子电信—电路与系统]