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色噪声间关联的周期调制对单模激光随机共振的影响

陈德彝 王忠龙

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色噪声间关联的周期调制对单模激光随机共振的影响

陈德彝, 王忠龙

Effect of the time period modulation of color noise correlation intensity on the stochastic resonance of the single-mode laser

Chen De-Yi, Wang Zhong-Long
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  • 讨论色噪声驱动的单模激光系统在噪声间关联程度受时间周期调制情况下的随机共振.用线性化近似的方法计算了光强功率谱及信噪比.具体讨论色噪声情况下信噪比R受噪声强度D,Q,时间周期调制频率Ωλ以及噪声自关联时间τ1,τ2和噪声间关联程度λ的影响.发现信噪比随噪声强度的变化呈单峰共振,信噪比随时间周期调制频率的变化呈周期性共振,而信噪比随
    Stochastic resonance is studied in single-mode laser driven by colored noise with time period modulation of the noise correlation intensity. By means of the linear approximation method, we calculate the power spectrum and signal-to-noise ratio of the laser intensity. Effects of the noise intensity D and Q, the time period modulation frequency Ωλ, the noise self-correlation-time τ1 and τ2, and the noise correlation intensity λ on the signal-to-noise ratio R are discussed. The results reveal that the evolution of the signal-to-noise ratio with the noise intensity shows the single-peak resonance, the evolution of the signal-to-noise ratio with the time period modulation frequency shows periodic resonance and the evolution of the signal-to-noise ratio with the noise self-correlation-time shows monotonie increase.
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出版历程
  • 收稿日期:  2008-05-07
  • 修回日期:  2008-07-07
  • 刊出日期:  2009-01-20

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