High-performance chaotic secure communication based on VCSELs systems with phase modulation and dispersion compensation

• Main Authors: Ren, Yi-Xin, Wang, Fei, Gao, Zi-Ye, Lin, Xiao-Dong, Du, Zhou-nan, Deng, Tian-Jie, Deng, Tao
• Format: Conference Proceeding
• Language: English
• Published: SPIE 27.11.2023
• ISBN: 9781510667716; 1510667717
• ISSN: 0277-786X
• DOI: 10.1117/12.2687120

Based on two Response Vertical-Cavity Surface-Emitting Lasers (R-VCSELs) subject to identical chaos optical injection with phase modulation and dispersion compensation, we propose and numerically investigate a high-speed bidirectional chaotic secure communication system. The driving VCSEL (D-VCSEL) is used to generate the injected chaotic signals to two R-VCSELs. After introducing the phase modulation and dispersion compensation into injection path, the bandwidth of chaotic carrier from the linear polarization components of R-VCSEL1 and R-VCSEL2 can be extended to 45GHz, and corresponding Time Delay Signatures (TDSs) can be suppressed to about 0.15. Moreover, high-quality chaos synchronization between corresponding polarization components of two R-VCSELs but very low correlation between the D-VCSEL and any R-VCSEL can be achieved. On this basis, the bidirectional dual-channel information transmission of 30 Gbit/s over 100 km fiber link is successfully realized.