Control of chaos in an external-cavity multi-quantum-well laser subjected to dual-wedges and optical dual-feedback  

作　　者：YAN SenLin 

机构地区：[1]Department of Physics and Electro-Engineering, Nanjing Xiaozhuang University, Nanjing 210017, China

出　　处：《Chinese Science Bulletin》2009年第7期1158-1163,共6页

基　　金：Supported by the Academic Basal Research of Natural Science of Jiangsu Province of China (Grant No. 08KJD510019)

摘　　要：A multi-parameter chaos-control method used to control chaos in an external cavity multi-quantum-well (MQW) laser via the dual-wedges and external delayed optical dual-feedback is presented. The physical model of the laser dynamic is established under the conditions of the dual-wedges and dual-feedback light control. The frequency detuning and stable ranges of the control system are theoretically demon-strated. The optical-length of the feedback light may be adjusted by shifting horizontally or sliding the dual-wedges relatively in the external optical road, which will alter the delaying time and feedback in-tensity of the dual-feedback light. Accordingly, the multi-parameter chaos-control of the optical dual-feedback may be achieved physically. The numerical simulations approve that the chaotic laser may be controlled into a stable state, a single-periodic state and multi-periodic states, and the con-trolled periodic pulse power may be increased.A multi-parameter chaos-control method used to control chaos in an external cavity multi-quantum-well （MQW） laser via the dual-wedges and external delayed optical dual-feedback is presented. The physical model of the laser dynamic is established under the conditions of the dual-wedges and dual-feedback light control. The frequency detuning and stable ranges of the control system are theoretically demon- strated. The optical-length of the feedback light may be adjusted by shifting horizontally or sliding the dual-wedges relatively in the external optical road, which will alter the delaying time and feedback intensity of the dual-feedback light. Accordingly, the multi-parameter chaos-control of the optical dual-feedback may be achieved physically. The numerical simulations approve that the chaotic laser may be controlled into a stable state, a single-periodic state and multi-periodic states, and the controlled periodic pulse power may be increased.

关 键 词：多量子阱激光器 混沌控制 光学长度 双反馈 双楔 外腔 稳定控制系统 反馈控制 

分 类 号：TN248.4[电子电信—物理电子学] O415.5[理学—理论物理]