Fig. 1. Schematic diagram of optical feedback semiconductor laser system

Fig. 2. Schematic diagram of optical injection-optical feedback semiconductor laser system

Fig. 3. Maximum Lyapunov exponent as a function of feedback strength of optical feedback semiconductor laser system

Fig. 4. Attractors of laser intensity in phase space for various linewidth enhancement factor α. Simulation method of photoelectric field amplitude-phase decomposition for system when (a) α=3 and (c) α=8;simulation method of photoelectric field real-imaginary part solution for system when (b) α=3 and (d) α=8. Two-dimensional phase space consists of laser intensity It=E2t and carrier density Nt

Fig. 5. Maximum Lyapunov exponent as a function of feedback strength with optical injection-optical feedback semiconductor laser system

Fig. 6. Attractors of laser intensity in space for various linewidth enhancement factor α. Simulation method of photoelectric field amplitude-phase decomposition for system when (a) α=3 and (c) α=8;simulation method of photoelectric field real-imaginary part solution for system when (b) α=3 and (d) α=8. Two-dimensional phase space consists of laser intensity It=E2t and carrier density Nt

Fig. 7. Feedback term of semiconductor laser system with optical injection-optical feedback using different decomposition calculation methods. (a) Amplitude-phase decomposition calculation method; (b) real-imaginary part solution calculation method

Fig. 8. Phase feedback terms at different feedback intensities of amplitude-phase simulation method in optical injection-optical feedback semiconductor laser system. (a) κ=3.106 ns^-1; (b) κ=4.659 ns^-1; (c) κ=6.212 ns^-1

Fig. 9. Phase feedback items at different linewidth enhancement factors of amplitude-phase simulation method in optical injection-optical feedback system. (a) α=3; (b) α=5; (c) α=8

Table 1. Parameters of semiconductor laser system