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

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.