Stochastic resonance in a single-mode laser driven by quadratic pump noise and amplitude-modulated signal |
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Authors: | Zhang Li |
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Institution: | College of Electrics and Information Engineering, South-Central University for Nationalities, Wuhan 430074, China |
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Abstract: | 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 $\lambda $ between the real and imaginary parts of
the pump noise. |
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Keywords: | quadratic pump noise new linear
approximation stochastic resonance |
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