Nonlinear Dynamics in Semiconductor Lasers Due to Filtered Optical Feedback: Fundamental Issues, and Applications to Chaotic Encryption and Signal Routing

滤波光学反馈导致的半导体激光器非线性动力学：基本问题以及混沌加密和信号路由的应用

• 批准号: 0010092
• 负责人: Gautam Vemuri
• 金额: $ 18万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-06-01 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0010092&HistoricalAwards=false
• 关键词: Nonlinear; Dynamics; Semiconductor; Lasers; Due

This proposal proposes a three year program of studies on nonlinear dynamics in diode lasers that arise from filtered optical feedback (FOF). FOF differs from conventional feedback (COF) in that the feedback light is spectrally filtered by an optical element that is external to the laser, before coupling back into the laser. The alterations in the dynamics due to FOF, when compared to COF are quite dramatic; more significantly, the proposal provides clear evidence of how FOF can be used to control the dynamics of the laser. Such control can be used to force the laser into regions of the dynamical phase space where it exhibits a desired dynamical response.In addition to the fundamental scientific issues that are inherent to FOF in diode lasers, the application of the control capability towards two ends will be explored. These are chaotic encryption and signal routing. In case of the former, the emphasis will be on making the wavelength of the laser light chaotic, and then controlling the bandwidth of the chaotic fluctuations. The direct impact of the work will be on telecom systems, and the infrastructure that is critical to all-optical communication systems. A successful completion of the project may spur the telecommunications industry to view FOF as a possible control mechanism for tailoring the dynamical response of diode lasers. The broader impact will be on the laser dynamics community, and especially those that are studying issues like COF, optical injection, and bifurcations in diode lasers. In addition, because FOF is a prototypical laboratory example of logistic maps, and a test bed for mathematical models that rely on time-delayed equations, it's anticipated that the applied mathematics and nonlinear dynamics community will be influenced by this work.

该提案提出了一项为期三年的研究二极管激光器中非线性动力学的研究计划，该计划是由过滤的光学反馈（FOF）引起的。 FOF与常规反馈（COF）有所不同，因为反馈光频谱被激光外部的光学元件过滤，然后再耦合到激光器中。与COF相比，由于FOF引起的动力学的变化非常引人注目。更重要的是，该提案提供了明确的证据，表明如何使用FOF来控制激光的动力学。这种控制可用于迫使激光进入动力学相空间的区域，在该区域表现出所需的动力响应。在二极管激光器中FOF固有的基本科学问题外，还将探索控制能力对两个端的应用。这些是混乱的加密和信号路由。如果是前者，重点将是使激光混沌的波长，然后控制混乱的波动的带宽。工作的直接影响将是对电信系统以及对全光通信系统至关重要的基础架构。该项目的成功完成可能促使电信行业将FOF视为调整二极管激光器动态响应的可能控制机制。更广泛的影响将对激光动力学界，尤其是那些正在研究二极管激光器中COF，光学注射和分叉等问题的影响。此外，由于FOF是逻辑图的典型实验室示例，并且是依靠时间延迟方程的数学模型的测试床，因此预计应用的数学和非线性动力学社区将受到这项工作的影响。