光子集成激光混沌源的非线性动力学特性分析及器件的优化设计

The broadband laser chaos based on semiconductor lasers (SLs) has attractive application prospect in various fields such as secure optical communication, fast random number generation, position measurement and so on. At present, most of the SLs laser chaos systems are actually loose systems, which are composed of discrete components. Such systems require many technological breakthroughs to upgrade the performance of compactness, stability, mass-producibility and other aspects. The photonic integration technology is currently one of the most feasible solutions. Therefore, we propose this project application to carry out a systematic investigation on the photonic integrated laser chaos sources. Firstly, through experimental investigation of the laser chaos and related various nonlinear dynamics in photonic integrated semiconductor laser (PISL), the detailed evolution and the distribution maps of PISL laser chaos will be obtained in different parameter spaces. Secondly, a reasonable theoretical mode will be constructed to describe the nonlinear dynamics of PISL. Next, the optimal design of PISL will be proposed, and more powerful PISL devices will be manufactured. Thirdly, based on the theoretical analysis and experimental investigation, the key impact factors and the optimal regulation way of PISL laser chaos will be explored. Finally, the accurate regulation of PISL laser chaos will be realized experimentally. By carrying on this project, we hope to achieve some breakthroughs in the basic research of laser chaos, and provide core technological support for the development of related important fields.

基于半导体激光器(SLs)的宽带激光混沌在保密光通信、高速随机数获取、定位测量等领域具有诱人应用前景。然而目前的SL激光混沌装置主要是由分立元件构成的离散式系统，在系统的紧凑性、稳定性、可批量化等方面还存在诸多关键技术亟待突破。光子集成技术是目前看来最可行的解决手段之一。基于此我们提出本项目申请，拟开展针对光子集成激光混沌源的系统研究。通过对光子集成激光器(PISL)中激光混沌及相关各非线性动力学态的大量实验考察，获得在不同参量空间中激光混沌态的详细演化规律和分布图谱；建立可合理描述PISL非线性动力学特性的理论模型；提出PISL的优化设计方案，研制性能更强的PISL器件；在理论分析和实验考察基础上，探究影响PISL激光混沌的关键因素和优化调控途径，实验实现对PISL激光混沌的准确调控。通过本项目的实施，可望在激光混沌的基础研究方面获得突破，从而为相关重要领域发展提供核心技术支持。

激光混沌在保密光通信、高速随机数获取、定位测量等领域具有诱人应用前景。然而目前的激光混沌装置主要是由分立元件构成的离散式系统，在系统的紧凑性、稳定性、可批量化等方面还存在诸多关键技术亟待突破。光子集成技术是目前看来最可行的解决手段之一。基于此我们进行了本项目的工作，专门开展针对光子集成激光混沌源(PISL)的研究。进行了外光注入PISL的非线性动力学演化分析以及混沌带宽增强研究，实验观察了该系统中的非线性动力学态，获得了激光混沌态的系列演化规律，在PISL中实现了带宽达36GHz激光混沌输出；探索了可集成的半导体环形激光器的混沌保密通信方案。项目还开展了利用光混沌的应用研究，讨论了并行50Gbit/s的超高速随机数的可行性方案，实验实现了速率达100Gbit/s的超高速物理随机数的输出。探索了基于介观尺度下的硅基光机械振子的光混沌实验产生方案，为进一步更小尺度的集成激光混沌器件制备打下基础，实验实现了长达50千米的硅光子集成混沌源之间的混沌同步。还提出了基于硅光子集成混沌源的混沌保密通信技术方案。通过本项目的实施，在激光混沌的基础研究和应用研究方面获得系列进展和技术突破，从而为我国先进信息安全技术领域发展提供核心技术支持。