光纤单信道混沌激光通信性能分析及优化方法设计  

Performance analysis and optimization design of chaotic laser communications with signal channel

作　　者：牛耕[1] 王丽雯[2] 

机构地区：[1]陕西警官职业学院,西安710043 [2]西安科技大学,西安710054

出　　处：《激光杂志》2017年第9期123-127,共5页Laser Journal

基　　金：陕西省教育厅教改项目(13Z39)

摘　　要：光纤通信和混沌激光通信技术在安全通信领域具有十分广泛的应用。混沌光信号在光纤信道的传输过程中会受到光纤的色散和非线性效应等因素的干扰,造成混沌同步和通信质量的下降。为此,本文通过建立光纤通信模型,提出了面向光纤单信道的混沌激光通信的对称色散补偿机制,对比在不同传输速率的条件下色散补偿策略执行前后接收机对信息恢复的处理能力,而且仿真分析了色散补偿周期对通信性能产生的影响。仿真验证了混沌光载波经色散位移光纤传输后信号的变化情况,说明通过色散补偿策略后,接收机恢复出信息的质量有显著提升。Optical fiber communication and chaotic laser communication technology have been widely used security communication field. But chaotic optical signals can be easily affected by the factors such as fiber dispersion and non-linear effects in the process of transmission in optical fiber channel, which can cause the quality decrease of chaotic synchronization and communication. Therefore, this paper put forward the symmetrical dispersion compensation mechanism of chaotic laser communication in the single optical channel through establishing the optical fiber communication model. Compared the before and after information recovery processing ability of receiver under the condition that dispersion compensation strategy execution in different transmission rate and the simulation analyzed the impact caused by dispersion compensation period on the communication performance. It verified the signal change of chaotic optical carrier after dispersion-shifted fiber transmission, which indicates that the quality of the information after recovering increased significantly after dispersion compensation strategy.

关 键 词：光纤信道 混沌激光 色散补偿 通信性能 

分 类 号：TN209[电子电信—物理电子学]