通过matlab模拟仿真光反馈半导体激光器的非线性动态输出特性，主要包括单周期振荡，倍周期振荡，四倍周期振荡和混沌振荡等。-Research program by matlab optical feedback semiconductor laser output characteristics of nonlinear dynamics, there are single-cycle oscillation, the oscillation cycle times, four times th