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通过计算混沌信号的特征参数,研究了不同参数下法布里-珀罗腔呈现混沌特性时的相位变化,发现其与强度变化一样具有混沌特性。提出了基于此种系统的双线延迟反馈结构,推导了该系统的动力学微分方程,计算其输出相位的lyapunov指数与功率谱,结果表明该系统的相位输出具有混沌特性,同时其维数相比单线延迟反馈系统有明显提高。这说明双线延迟反馈系统继承了原系统的相位混沌特性,并且提高了混沌复杂度,是一种产生高维相位混沌的有效途径。
By calculating the characteristic parameters of the chaotic signal, the phase changes of the Fabry-Perot cavity under different parameters are studied. It is found that the chaotic characteristic is the same as the intensity change. A two-wire delay feedback structure based on this kind of system is proposed. The differential equations of the system are deduced. The lyapunov exponent and power spectrum of the output phase are calculated. The results show that the phase output of the system has the chaos characteristic, Than the single-line delay feedback system has significantly improved. This shows that the two-wire delay feedback system inherits the phase chaotic characteristics of the original system and improves the complexity of chaos, which is an effective way to generate high-dimensional phase chaos.