EFFECT OF PERIODICALLY MODULATED NOISE ON STOCHASTIC RESONANCE IN LASER SYSTEM

被引:2
|
作者
Zhang, Li [1 ]
Yuan, Xiu-Hua [1 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China
来源
关键词
Stochastic resonance; single-mode laser; noise modulated by pulse; RING LASER; SIGNAL; MODEL;
D O I
10.1142/S0217979213501014
中图分类号
O59 [应用物理学];
学科分类号
摘要
The output power and the signal-to-noise ratio (SNR) of a single-mode laser system are calculated in the case of the laser model with periodically modulated noise. The corresponding stochastic resonance (SR) phenomena are discussed and compared with the case without periodically modulated noise. It is shown that the main difference between the two noise laser models exists in the SNR as a function of signal period. There appears resonance and suppression coexisting phenomenon for the model with periodically modulated noise, which can be utilized to restrain or optimize the output SNR of the system. Whereas, SR is absent for the model without periodically modulated noise, and the SNR just increases monotonously with signal period.
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页数:10
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