Stochastic resonance in a single-mode laser driven by quadratic pump noise and amplitude-modulated signal  

作　　者：张莉 

机构地区：[1]College of Electrics and Information Engineering, South-Central University for Nationalities

出　　处：《Chinese Physics B》2009年第4期1389-1393,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No 10275025)

摘　　要：This paper investigates the phenomenon of stochastic resonance in a single-mode laser driven by quadratic pump noise and amplitude-modulated signal. A new linear approximation approach is advanced to calculate the signal-to-noise ratio. In the linear approximation only the drift term is linearized, the multiplicative noise term is unchangeable. It is found that there appears not only the standard form of stochastic resonance but also the broad sense of stochastic resonance, especially stochastic multiresonance appears in the curve of signal-to-noise ratio as a function of coupling strength A between the real and imaginary parts of the pump noise.This paper investigates the phenomenon of stochastic resonance in a single-mode laser driven by quadratic pump noise and amplitude-modulated signal. A new linear approximation approach is advanced to calculate the signal-to-noise ratio. In the linear approximation only the drift term is linearized, the multiplicative noise term is unchangeable. It is found that there appears not only the standard form of stochastic resonance but also the broad sense of stochastic resonance, especially stochastic multiresonance appears in the curve of signal-to-noise ratio as a function of coupling strength A between the real and imaginary parts of the pump noise.

关 键 词：quadratic pump noise new linear approximation stochastic resonance 

分 类 号：N93[自然科学总论] TN24[电子电信—物理电子学]