现代电子技术Issue(5)：12-15,4.
自由光通信中PIN探测器光阈值特性研究
Research on laser threshold characteristics of PIN photodetector in free space optical communication
摘要
Abstract
The laser threshold characteristics of PIN photodetector in free space communication with the wavelength of 1 064 nm. In order to study the effect of optical damage threshold of PIN detector to the optical communication,the Nd:YAG laser, attenuator,oscilloscope and PIN detector and other instruments are used to simulate a wireless optical communication system with PIN detector at 1 064 nm band. Through adjusting the attenuation coefficient,the change of eye diagram can be observed when the detector reaches the intense light saturation,to judge whether the communication can be continue. Through experiment it is indicated that when the detector reached depth saturation,the phenomenon of broadened pulse width would occur in the communication system,and seriously intersymbol interference would come out which can′t satisfied the communication require-ments. The mathematics model is built up with the experiment threshold. The effect on output power of blinding laser by dis-tance,beam angle and irradiation angle is observed.关键词
PIN探测器/强光饱和/码间串扰/数学模型Key words
PIN detector/intense light saturation/intersymbol interference/mathematics model分类
信息技术与安全科学引用本文复制引用
吴菲,李洪祚,杜春梅,高海光..自由光通信中PIN探测器光阈值特性研究[J].现代电子技术,2014,(5):12-15,4.基金项目
国家863计划项目 （）
