复数圆环状光晶格中孤子传输特性及控制研究

项目名称： 复数圆环状光晶格中孤子传输特性及控制研究

项目编号： No.61308019

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 王红成

作者单位： 东莞理工学院

项目金额： 25万元

中文摘要： 光晶格为光束衍射操控及光晶格孤子现象等非线性离散动力学行为的实验观测提供了便利条件,并在全光路由、全光开关和光子计算机等方面具有重要的应用前景，对光晶格孤子的全面掌握具有巨大的实用价值和理论意义。 本项目基于由复数圆环状光晶格构建的非线性光学系统，重点研究光束在复数圆环状光晶格中的传输行为，求出基态孤子、涡旋孤子、多极孤子、项链孤子等多种晶格孤子的形成条件，分析其功率谱、内部模式及传输稳定性，讨论半无限光晶格和有缺陷的光晶格中孤子形成及传输情况，并利用空间相位调制技术或调节晶格深度、周期等参数的方法实现对光晶格孤子的操控，讨论它们在光信息处理方面的应用可能性，揭示晶格孤子在复数圆环状光晶格中的传输规律。

中文关键词： 光学孤子；复数晶格势；宇称时间对称性；对称性破缺；光晶格

英文摘要： Optical lattices provide convenient conditions for the experimental observation of the dynamical behavior of nonlinear discrete beam diffraction manipulation and optical lattice solitons, which have been proven to have important applications in all-optical routing, all-optical switches and photonic computer. There are great practical value and theoretical significance in the complete understanding of optical lattice solitons. Based on the nonlinear optical system with complex annular optical lattice, this project investigates the propagation properties of optical beams in complex annular optical lattices. By using feasible complex annular optical lattices, we will get the following results:(1) giving the formation conditions of genrating fundamental soliton, vortex soliton, and multiple-poles soliton, etc; (2) getting power spectrum, internal mode, and the stability; (3) inverstigating the defect lattice soliton when the complex annular lattice has a defect and discussing the properties of surface lattice soliton at the interface of several circular rings; (4) steering soliton by modulating its phase or changing the depth and period of the complex annular lattice; and (5) discussing potential applications of the soliton in optical information precessing. The results of this project will make important cont

英文关键词： optical solitons；complex lattice potential；parity-time symmetry；symmetry breaking；optical lattice