Li Qiliang, Lu Shanshan, Bao Qi, Chen Dewang, Tang Xianghong, Hu Miao, Zeng Ran, Yang Guowei. Bidirectional Signal Transmission Based on Two Coupled Chaotic Semiconductor Lasers[J]. Chinese Journal of Lasers, 2018, 45(5): 506001
- Chinese Journal of Lasers
- Vol. 45, Issue 5, 506001 (2018)
Fig. 1. Schematic of chaos-based bidirectional signal transmission system
Fig. 2. Cross-correlation coefficient in the oupling-feedback coefficients plane
Fig. 3. Diagram of attractors of (a) SL1 and (b) SL2 in phase space
Fig. 4. Temporal traces of optical power of SL1 (blue),SL2 (red). Traces of SL2 have been shifted vertically to istinguish it from SL1. Insert shows the cross-correlation function between the two laser outputs
Fig. 5. Synchronization error of optics power
Fig. 6. (a) Transmission signal of two lasers; (b) absolute value of difference of two lasers Δm(t); (c) synchronization errors P1(t)-P2t shaped by Butterworth filter; (d) decoding by P1(t)-P2t (blue) and m1(t) (red) to send signal m2(t)
Fig. 7. Eye diagram of decoded signal
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Table 1. Parameter values used in simulation
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