中国激光, 2018, 45 (1): 0106001, 网络出版: 2018-01-24
安全性增强的双向长距离混沌保密通信 
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Security-Enhanced Bidirectional Long-Distance Chaos Secure Communication
图 & 表
图 1. 安全性增强的双向长距离混沌保密通信系统的结构示意图
Fig. 1. Schematic diagram for security-enhanced long-distance bidirectional chaos communication system
图 2. DL输出混沌的(a) σD和(b) WD在频率失谐ΔfID和注入强度kin1构成的参数空间中的演化图
Fig. 2. Evolution maps of (a) σD and (b) WD of the chaos outputs from DL in the parameter space of frequency detuning ΔfID and injection strength kin1
图 3. 光纤链路F1和F2为10 km时,RL1输出混沌信号的(a) σR1和(b) WR1 在频率失谐ΔfDR和注入强度kin构成的参数空间中的演化图
Fig. 3. Evolution maps of (a) σR1 and (b) WR1 of the chaos outputs from RL1 in the parameter space of frequency detuning ΔfDR and injection strength kin, where the lengths of fiber links F1 and F2 are also 10 km
图 4. 光纤链路F1和F2为10 km时,(a) RL1与RL2和(b) DL与RL1混沌输出之间最大互相关系数在频率失谐ΔfDR和注入强度kin构成的参数空间中的演化图
Fig. 4. Evolution maps of maximal cross-correlation coefficients between two lasers for (a) RL1 and RL2 and (b) DL and RL1 in the parameter space of frequency detuning ΔfDR and injection strength kin, where the lengths of fiber links F1 and F2 are also 10 km
图 5. 光纤链路F1和F2为50 km时,(a) RL1与RL2和(b) DL与RL1混沌输出之间最大互相关系数在频率失谐ΔfDR和注入强度kin构成的参数空间中的演化图
Fig. 5. Evolution maps of maximal cross-correlation coefficient between two lasers for (a) RL1 and RL2 and (b) DL and RL1 in the parameter space of frequency detuningΔfDR and injection strength kin, where the lengths of fiber links F1 and F2 are also 50 km
图 6. 光纤链路F1和F2均为10 km时,DL、RL1和RL2 3个激光器中任意2个激光器输出混沌信号的(a1)-(a3)时间序列 、(b1)-(b3)功率谱和(c1)-(c3)对应的互相关函数
Fig. 6. (a1)-(a3) Time series, (b1)-(b3) power spectra and (c1)-(c3) corresponding cross-correlation coefficients for arbitrary two chaotic outputs from DL, RL1 and RL2, where the lengths of fiber links F1 and F2 are also 10 km
图 7. RL1与RL2之间的最大互相关系数Cmax_R1,R2和DL与RL1之间的最大互相关系数 Cmax_D,R1随激光器内部参数及链路F1和F2光纤参数失配的变化
Fig. 7. Maximal cross-correlation coefficients Cmax_R1,R2 between RL1 and RL2, Cmax_D,R1 between DL and RL1 versus internal parameters of lasers and parameter mismatches between F1 and F2
图 8. 20 Gbit/s的信息在不同距离色散位移光纤中双向传输的解码效果。(a)解码信息的Q因子随传输距离变化的曲线;(b)-(d)传输距离分别为20,80,120 km时2个相反方向解码信息的眼图
Fig. 8. Q factors of 20 Gbit/s decoded messages for different bidirectional transmission distances in dispersion-shifted fibers. (a) Q factors of decoded messages versus the transmission distance; (b)-(d) eye diagrams of decoded messages for transmission distances of 20, 80, 120 km along 2 opposite directions
图 9. Gbit/s的信息在不同距离普通单模光纤中双向传输的解码效果。(a)解码信息的Q因子随传输距离变化的曲线;(b)-(d)传输距离分别为20,80,120 km时2个相反方向解码信息的眼图
Fig. 9. Q factors of 1 Gbit/s decoded messages for different bidirectional transmission distances in dispersion-shifted fiber. (a) Q factors of decoded messages versus the transmission distance, (b)-(d) eye diagrams of decoded message for transmission distances of 20 , 80, 120 km along 2 opposite directions
李琼, 邓涛, 吴正茂, 徐攀, 夏光琼. 安全性增强的双向长距离混沌保密通信[J]. 中国激光, 2018, 45(1): 0106001. Li Qiong, Deng Tao, Wu Zhengmao, Xu Pan, Xia Guangqiong. Security-Enhanced Bidirectional Long-Distance Chaos Secure Communication[J]. Chinese Journal of Lasers, 2018, 45(1): 0106001.
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