| Stochastic Resonance in Linear Region of a Single-Mode Laser： Effects of Amplitude Modulation of Signal |
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| 摘 要： |
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| 关 键 词： | 随机反应 单一模式激光 振幅 调制信号 |
| 收稿时间： | 2007-05-28 |
Stochastic Resonance in Linear Region of a Single-Mode Laser:Effects of Amplitude Modulation of Signal |
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| ZHANG Liang-Ying CAO Li WU Da-Jin. Stochastic Resonance in Linear Region of a Single-Mode Laser:Effects of Amplitude Modulation of Signal[J]. Communications in Theoretical Physics, 2008, 49(5): 1310-1314 |
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| Authors: | ZHANG Liang-Ying CAO Li WU Da-Jin |
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| Affiliation: | 1. Department of Physics, Xiangfan University, Xiangfan 441053,China;2. Department of Physics, Huazhong University of Science andTechnology, Wuhan 430074, China |
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| Abstract: | A single-mode laser noise model driven by quadratic colored pump noise and amplitude modulation signal is proposed. The real and imaginaryparts of the pump noise are assumed to be cross-correlation. The effect ofcross-correlation of noise and amplitude modulation of signal on laserstatistical properties is studied by using the linearized approximation. Theanalytic expression of signal-to-noise ratio (SNR) is calculated. It isfound that the phenomena of stochastic resonance (SR) respectively exist in thecurves of the SNR versus the noise cross-correlation coefficient λ and the SNR versus the pump parameter a, as well as the SNR versus thesignal frequency ω in our model. It is shown that there are three different typies of SR in the model: the conventional form of SR, the SR in the broad sense, and the bona fide SR. |
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| Keywords: | stochastic resonance single-mode laser amplitude modulation signal |
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