Fig. 1. System diagram of phase modulation optical feedback semiconductor laser with external unidirectional double optical injection

Fig. 2. Time series and ACF curve of chaotic laser from system. (a) Time series; (b) ACF curve

Fig. 3. Two-dimensional map of time-delay characteristic value β varying with Ks and Km for chaotic laser from system

Fig. 4. Two-dimensional map of time-delay characteristic value β varying with K1 and K2 for chaotic laser from system

Fig. 5. Variation of time delay characteristic value β varying with Pm for chaotic laser output from system

Fig. 6. Variation of time delay characteristic value β with Δf for chaotic laser output from system

Fig. 7. Variation of time delay characteristic value β with Ps for chaotic laser output from system

Fig. 8. Time series, power spectrum, ACF curve, and variation of bandwidth with Km for chaotic laser output from system. (a) Time series; (b) power spectrum; (c) ACF curve; (d) variation of bandwidth with Km

Fig. 9. Time series, ACF curves, and power spectra for chaotic laser output from system under different injection coefficient K2.(a1)(a2) Time series; (b1)(b2) ACF curves; (c1)(c2) power spectra

Fig. 10. Variation of bandwidth with K2 for chaotic laser from system

Fig. 11. Variation of bandwidth with Pm for chaotic laser from system

Fig. 12. Variation of bandwidth with Ks for chaotic laser from system

Fig. 13. Variation of bandwidth with Ps for chaotic laser from system

Fig. 14. Variation of bandwidth with Δf for chaotic laser from system