Fig. 1. Schematic diagrams of optoelectronic oscillation loop for generating chaos laser. (a) Chaos generation device based on continuous continuous-wave laser and optoelectronic oscillation loop; (b) chaos laser generation device based on Fabry-Perot semiconductor laser and optoelectronic oscillation loop

Fig. 2. Routes to chaos. (a)‒(d) Time series of CW-OEO under different electrical amplification gains; (e)‒(h) time series of FP-OEO under different electrical amplification gains

Fig. 3. Typical results of chaos. (a) CW-OEO optical spectrum; (b) CW-OEO power spectrum; (c) FP-OEO optical spectrum; (d) FP-OEO power spectrum

Fig. 4. Autocorrelation function of chaos time series. (a) Autocorrelation function of CW-OEO chaos time series; (b) autocorrelation function of FP-OEO chaos time series

Fig. 5. Experimental results of different mode chaos. (a) (c) Optical spectra; (b) (d) power spectra

Fig. 6. Correlation of different mode chaos. (a)‒(d) Cross correlation function; (e) changes in pattern spacing and correlation between patterns