Xiaoxue Gong, Tiantian Zhang, Qihan Zhang, Tiening Zhang, Lei Guo. Optical Direct-Detection System Based on Chaotic Encryption and Kramers-Kronig Receiver[J]. Acta Optica Sinica, 2023, 43(19): 1906004
- Acta Optica Sinica
- Vol. 43, Issue 19, 1906004 (2023)
Fig. 1. Structure of DD-OOFDM system
Fig. 2. Image encryption and decryption framework
Fig. 3. Image double chaotic encryption and decryption model
Fig. 4. Chaos insect-population model
Fig. 5. Image of chaotic sequence values with different initial values
Fig. 6. Flowchart of double chaotic sequence encryption
Fig. 7. Electric field signal at the photodiode
Fig. 8. Schematic of the integration area
Fig. 9. KK receiver structure
Fig. 10. Block diagram of optical direct detection system based on chaotic encryption and Kramers-Kronig receiver
Fig. 11. Image and pixel histogram before and after double chaotic encryption. (a) Source image; (b) source image histogram; (c) scrambled image; (d) scrambled image histogram; (e) chaotic encryption image; (f) chaotic encryption image histogram
Fig. 12. Processed results before and after the introduction of KK receiver
Fig. 13. Chaotic decrypted images without and with KK receiver
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