周期性信号调制噪声驱动下光学双稳系统动力学行为研究  

Dynamic Behavior of the Optical Bistability System Driven by Periodic Signal Modulating Noises

作　　者：程庆华[1] 桂堤[1] 张瑞芳[1] 徐大海[1] 

机构地区：[1]长江大学物理科学与技术学院,湖北荆州434023

出　　处：《长江大学学报（自科版）（上旬）》2010年第3期19-22,37,共5页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

基　　金：湖北省教育厅重点科研项目(D200612001;D200712002)

摘　　要：研究了周期性信号调制噪声驱动下吸收型光学双稳态系统的动力学行为,计算了系统的光强关联函数和输出信噪比。通过对信噪比的分析发现,信噪比随泵噪声色关联时间的变化关系出现了随机共振现象,且当量子噪声强度减弱或泵噪声强度增强时,均能使随机共振现象增强。The intensity of correlation function and signal-to-noise ratio(SNR)of an aborptive optical bistability system driven by a periodic signal are studied.from analyzing the SNR,the stochastic resonance phynomenon of SNR with the change of pump noise self-correlation time was found,both decreasing the intensity of quantum noise and increasing the intensity of pump noise,can increase the stochastic resonance phynomenon.

关 键 词：光学双稳态系统 随机共振 信噪比 噪声 自关联时间 

分 类 号：O431.2[机械工程—光学工程]