Dongdong Cao, Mingming Wang, Jiang Li, Weitao Zhang, Tao Ran, Hongzhe Sun, Zhenqian Yang. Design and Implementation of All‐Optical Synchronization Scheme in Optical‐Fiber Secure Communication[J]. Chinese Journal of Lasers, 2023, 50(6): 0606001
- Chinese Journal of Lasers
- Vol. 50, Issue 6, 0606001 (2023)
Fig. 1. Principle diagram of all-optical synchronization scheme
Fig. 2. Schematic of impulse signal. (a) Code 1; (b) code 0
Fig. 3. Time domain waveform of signals before WDM.
Fig. 4. Demultiplexed time domain waveform of signals.
Fig. 5. Time domain waveform of decryption key signal
Fig. 6. Time domain waveform of ciphertext signal after time delay and power adjusting
Fig. 7. Time domain waveform of plaintext signal.
Fig. 8. Signal eye patterns. (a) Ciphertext signal before WDM; (b) demultiplexed ciphertext signal; (c) recovered plaintext signal after decrypting
Fig. 9. Time domain waveform of ciphertext signal before WDM
Fig. 10. Demultiplexed time domain waveform of signals.
Fig. 11. Time domain waveform of decryption key signal
Fig. 12. Time domain waveform of ciphertext signal after time delay correction and power adjusting
Fig. 13. Time domain waveform of plaintext signal. (a) Recovered plaintext signal after decrypting; (b) original plaintext signal before encrypting
Fig. 14. Signal eye patterns. (a) Ciphertext signal before WDM; (b) demultiplexed ciphertext signal; (c) recovered plaintext signal after decrypting
Fig. 15. Signal eye pattern of recovered plaintext signal after decrypting. (a) T=-7 ps; (b) T=-4 ps; (c) T=-2 ps; (d) T=-1 ps; (e) T=0 ps; (f) T=1 ps; (g) T=2 ps; (h) T=4 ps; (i) T=7 ps
Fig. 16. Demultiplexed time domain waveform of signals.
Fig. 17. Time domain waveform of decryption key signal
Fig. 18. Time domain waveform of ciphertext signal after time delay correction and power adjusting
Fig. 19. Time domain waveform of recovered plaintext signal after decrypting
Fig. 20. Signal eye patterns. (a) Ciphertext signal before WDM; (b) demultiplexed ciphertext signal; (c) recovered plaintext signal after decrypting
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Table 1. Main parameter setting of G.655 fiber
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Table 2. Influence of password synchronization state on recovered plaintext signal after decrypting
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