Stochastic resonance in a single-mode laser driven by frequency modulated signal and coloured noises

【摘要】 By adding frequency modulated signals to the intensity equation of gain-noise model of the single-mode laser driven by two coloured noises which are correlated,this paper uses the linear approximation method to calculate the power spectrum and signal-to-noise ratio(SNR) of the laser intensity.The results show that the SNR appears typical stochastic resonance with the variation of intensity of the pump noise and quantum noise.As the amplitude of a modulated signal has effects on the SNR,it shows suppression,monotone increasing,stochastic resonance,and multiple stochastic resonance with the variation of the frequency of a carrier signal and modulated signal.更多还原

【Abstract】 By adding frequency modulated signals to the intensity equation of gain-noise model of the single-mode laser driven by two coloured noises which are correlated,this paper uses the linear approximation method to calculate the power spectrum and signal-to-noise ratio(SNR) of the laser intensity.The results show that the SNR appears typical stochastic resonance with the variation of intensity of the pump noise and quantum noise.As the amplitude of a modulated signal has effects on the SNR,it shows suppression,monotone increasing,stochastic resonance,and multiple stochastic resonance with the variation of the frequency of a carrier signal and modulated signal.更多还原