用于全光缓存的光子晶体慢光宽带无色散及动态控制研究

项目名称： 用于全光缓存的光子晶体慢光宽带无色散及动态控制研究

项目编号： No.61307050

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： 李长红

作者单位： 青岛大学

项目金额： 24万元

中文摘要： 全光缓存器是实现全光网络的关键部件，也是全光信息处理应用亟待解决的问题，而信号无失真和动态控制是缓存功能实现的关键。本项目拟采用一种新型、高效、灵活的计算软件，分析不同结构光子晶体慢光的导模色散曲线和电磁场分布与传输，明确慢光传输的不同机理，研究波导结构的无色散特性：1)通过在波导结构近侧特异性设计，获得平坦宽带慢光的低色散特性；2)通过微腔和微腔附近结构设计，获得极低速低色散慢光条件；3)通过波导中引入啁啾结构进行色散补偿获得无色散慢光传输条件；最终实现慢光信号的保形传输。4）将非线性材料引入无色散波导，在慢光加强作用下，研究外场对无色散慢光传输的动态调制，设计出慢光传输动态控制的理论模型，获得全光缓存的动态控制条件。本项目的成果将为光子晶体慢光及其群色散理论的发展提供有力支持，并为光缓存等器件实用化开辟新的途径。

中文关键词： 光子晶体；慢光；宽带；低色散；动态控制

英文摘要： In the realization of all-optical network and information processing, optical buffer is a critical component, where distortionless transmit and dynamically control of the optical signal are desiderate to be solved. In this project, we are planning to use one efficient, flexible and newly-released software package to analyse the dispersion curve and electromagnetic field distribution of photonic crystal slow light in different waveguide. Based on these, the mechanisms of slow light in different structure will be clearly defined, and non-dispersion characterize will be analysed: 1) By special designing of photonic crysal structure nearby the waveguide, the flat wide band low-despersion characteristics of slow light will be researched; 2) With structure design of the microcavity and near bulk, the superslow and low-dispersion condition of slow light will be researched; 3) Through chirping the waveguide structure, dispersion compensation will be obtained to realize non-dispersion research. 4)To exert dynamical control over the entire processes, nonlinear optical materials will be introduced, and with the enhancement of slow light, the control of slow optical pulse with external field will be discussed. Based on above research, the theoretical model of dynamic control in optical buffer will be designed and the condi

英文关键词： Photonic crystal；Slow light；Wide band；Low dispersion；Dynamic control