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利用窄带的放大自发辐射作为外部光源扰动分布反馈式半导体激光器,使其实现混沌态输出。基于对实验数据标准化香农熵和峰峰值的计算,分析了注入强度对产生混沌信号的复杂度和幅值的影响,并与采用连续光注入分布反馈式半导体激光器生成的混沌信号做对比研究。研究表明,同样条件下,采用窄带的放大自发辐射扰动激光器产生混沌信号,容许的注入参数范围更广,所生成的混沌信号的复杂度更高,幅值更大。
The use of narrow-band amplified spontaneous emission as the external light source disturbance distribution feedback semiconductor laser, enabling it to achieve chaotic state output. Based on the calculation of the Shannon entropy and the peak-to-peak value of the experimental data, the influence of injection intensity on the complexity and amplitude of the generated chaotic signal is analyzed and compared with the chaotic signal generated by the continuous-light injection distributed feedback semiconductor laser. The research shows that under the same conditions, the narrow-band amplified spontaneous emission perturbation laser generates chaotic signals, allowing a wider range of injection parameters, and the generated chaotic signals have higher complexity and larger amplitude.