中文摘要：

利用光反馈多模半导体激光器建构了多信道双向混沌通信系统，数值研究了系统的同步特性及通信性能．结果表明，当激光器的参数一致时，2激光器对应模式间能够获得无时延高质量混沌同步，并实现多信道实时双向通信；当激光器的内参数失配时，系统的同步性能和通信质量会受到一定影响，但在一定失配范围内，系统仍能较好地实现多信道双向通信．

英文摘要：

A multi-channel bidirectional chaos communication system was constructed by using multimode Semiconductor laser with Optical Feedback, and the synchronization characteristics and the communication performances of such a system are numerically investigated. The results show that when the parameters of the lasers are well matched, high-quality chaos synchronization with zero lag time between the corresponding modes of the two lasers. And simultaneous multihannel bidirectional transmission can both be realized, and when the inner parameters of system are mismatched, the synchronization quality and the communication performance are affected to a certain extent, but the system possesses good robustness against the mis- matched parameters and can still realize multi-channel bidirectional chaos communication within a range of mismatched parameter.