Fig. 1. System diagram of an optically injected semiconductor laser subject to optoelectronic feedback

Fig. 2. Time series and the corresponding ACF curves of chaotic laser output from the system under the different delay time. (a1)--(a3) Time series; (b1)--(b3) ACF curves

Fig. 3. Two-dimensional map of the time delay characteristic value β in the parameter space of k_in and ξ_fs of chaotic laser from the system

Fig. 4. Variations of the time delay characteristic value β versus P_s of chaotic laser output from the slave laser with and without optical injection. (a) With optical injection; (b) without optical injection

Fig. 5. Variations of the time delay characteristic value β versus P_m of the chaotic laser output from the master laser and the slave laser. (a) Master laser; (b) slave laser

Fig. 6. Power spectra of chaotic laser from the system under different parameters(the dotted line indicates the 3 dB bandwidth of the chaotic laser). (a) k_in=0.04, ξ_fs=0; (b) k_in=0.08, ξ_fs=0.06; (c) k_in=0.15, ξ_fs=0.12; (d) k_in=0.20, ξ_fs=0.18

Fig. 7. Variations of bandwidth versus P_s of chaotic laser from the system