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

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2009,（7）
• 页码范围: 1158-1163
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11434-009-0154-y

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.