Numerical investigations on the message encoding and decoding techniques of the incoherent optical feedback chaotic system

Li Xu; Guangqiong Xia; Li Fan; Xiaojuan Yan; Xiaofa Wang; Zhengmao Wu

doi:10.1117/12.753961

7 January 2008 Numerical investigations on the message encoding and decoding techniques of the incoherent optical feedback chaotic system

Li Xu, Guangqiong Xia, Li Fan, Xiaojuan Yan, Xiaofa Wang, Zhengmao Wu

Author Affiliations +

Proceedings Volume 6824, Semiconductor Lasers and Applications III; 682411 (2008) https://doi.org/10.1117/12.753961
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Based on the theoretical model of the synchronization system with incoherent optical feedback, message encoding and decoding of the chaotic system have been investigated. The results show that message can be hidden efficiently in the chaotic signal during the transmission with three encryption schemes (i.e., chaos shift keying (CSK), chaos masking (CMS) and additive chaos modulation (ACM)); the message of 250Mb/s can be decoded in the receiver with CSK and CMS; when the bit rate increases to 2.5Gb/s, the message can not be decoded with CSK and the quality of message decoded with CMS becomes bad; and when the bit rate increases to 12.5Gb/s, the message can not be decoded with CSK and CMS, however the message can be decoded perfectly by adopting ACM.

Citation Download Citation

Li Xu, Guangqiong Xia, Li Fan, Xiaojuan Yan, Xiaofa Wang, and Zhengmao Wu "Numerical investigations on the message encoding and decoding techniques of the incoherent optical feedback chaotic system", Proc. SPIE 6824, Semiconductor Lasers and Applications III, 682411 (7 January 2008); https://doi.org/10.1117/12.753961

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