激光混沌外部调制包络隐藏及相位隐藏编码方法及其在光纤保密通信中的应用研究
doi: 10.3724/SP.J.1146.2007.00170
Envelope Making and Phase Encoding via External Modulation and Their Applications to Optical Fiber Secure Communications
-
摘要: 该文研究光纤混沌包络隐藏与光纤相位隐藏保密通信理论模型，分析包络隐藏调制解调特性，导出解码公式；分析光纤自相位调制和光功率以及光放大器个数对系统的影响，提出接入相位控制器以减小非线性相移对同步解调负面影响的设想。数值模拟了调制速率0.2Gbit/s的混沌包络隐藏编码以及调制速率0.05Gbit/s的混沌相位隐藏编码及其在波长1.55m远程光纤数字保密通信中的应用，表明系统确具有较高的保密性能。Abstract: Theoretical models of envelope making and phase making of optical fiber chaotic secure communication are studied by coupling the chaotic encoding multiple-quantum-well laser systems and an optical fiber channel. Effects of the self-phase modulation of optical fiber and optical amplifier number are analyzed. The modulation and demodulation quality is analyzed and an encoding formula is demonstrated. A phase controller can be used to reduce the effect of nonlinear phase shift of fiber on the synchronization and demodulation. Finally, envelope making with a bit rate of 0.2Gbit/s and phase masking with a bit rate of 0.05Gbit/s are simulated in long-haul optical fiber secure communications at wavelength 1.55m. The systems have good secure performances.
-
Pecora L M and Carroll T L. Synchonization in chaotic systems[J].Phys. Rev. Lett.1990, 64(10):821-824[2]Colet P and Roy R. Digital communication withsynchronization chaotic laser[J].Opt. Lett.1994, 19(24):2056-2058[3]Wu L and Zhu S Q. Communications using multi-mode lasersystem based chaotic synchronization[J].Chin. Phys.2003, 12(3):300-304[4]Argyris A and Syvridis D. Performance of open-loop all-opticalchaotic communication systems under strong injectioncondition[J].J. lightwave Technology.2004, 22(5):1272-1279[5]Buld J M, G -Ojalvo J, and Torrent M C. Demultiplexingchaos from multimode semiconductor laser. IEEE J. QuantumElectron., 2005, 41(2): 164-170.[6]Yan Senlin. All-optical chaotic MQW laser repeater forlong-haul chaotic communications. Chin. Opt. Lett., 2005, 3(5):283-286.[7]颜森林.高速多量子阱激光器混沌保密通信系统研究[J].光学学报, 2005, 25(2): 180-185.Yan Sen-lin. High rate chaos secure communication system ofmultiple-quantum-well lasers. J. Acta Optica Sinica, 2005,25(2): 180-185.[8]颜森林.量子阱激光器混沌相位控制同步以及编码研究[J].物理学报, 2005, 54(3): 1098-1104.Yan Sen-lin. Studies on chaotic multiple-quantum-well lasersynchronization via controlling phase and its application insecure communication using external chaos phase shift keyingmodulation. J. Acta Physical Sinica, 2005, 54(3): 1098-1104.[9]Agrawal G P. Nonlinear Fiber Optics. San Diego, CA:Academic. 1989: 37-55. -
计量
- 文章访问数: 3176
- HTML全文浏览量: 93
- PDF下载量: 820
- 被引次数: 0
下载:
