掺铒光纤激光器的动力学分析及电路实现

Dynamic analysis and circuit realization of erbium-doped fiber laser

针对单模双环掺铒光纤激光器非线性系统提出了一种新的模拟电路模型。利用模拟电路仿真、平衡点性质、李雅普诺夫指数谱和分岔图等对系统动力学特性进行了分析,并使用Multisim和DSP完成了硬件实现。分析结果表明,单模双环掺铒光纤激光器系统在特定条件下可以进入稳定混沌状态,同时本模拟电路可以表现出与之相同的动力学特性。与单模双环掺铒光纤激光器相比,本电路结构简单,成本低廉,为掺铒光纤激光器系统的应用提供了理论基础。

A new analog circuit model for the nonlinear system of a single-mode dual-ring erbium-doped fiber laser(EDFL)was proposed.The system dynamics characteristics were analyzed using analog circuit simulation,balance point properties,Lyapunov exponential spectrum and bifurcation diagram,and hardware implementation was completed using Multisim and DSP.The analysis results showed that the single-mode dual-ring erbium-doped fiber laser system could enter a stable chaotic state under certain conditions,and the analog circuit could exhibit the same dynamic characteristics.Compared with the single-mode double-ring erbium-doped fiber laser,the circuit has a simple structure and low cost,which provides a theoretical basis for the application of an erbium-doped fiber laser system.