非线性光子晶体的动态响应性质及其在全光功能器件中的应用

中文摘要

光子晶体全光功能器件如全光开关,光二级管以及双稳器件等在未来光通讯和信息处理技术中将扮演非常重要的角色.研究表明,非线性光子晶体是实现全光功能器件的最具希望的途径之一.为了实现超高速,低功耗和小型化的目标,非线性光子晶体物理性质的研究已经成为国际关注的重点.而非线性光子晶体动态响应性质的研究又堪称重中之重.本项目着重研究各种非线性光子晶体结构特别是单缺陷或耦合缺陷结构,如原子,分子,波导等,在不同激发条件下的动态响应行为,如双稳特性,单向导通特性以及光控延迟特性等等.它们是构建全光功能器件的基础.深入研究这些物理特性并且探索它们在全光功能器件中的应用,是一项具有挑战性的研究工作,也是本项目的主体框架和核心内容.我们计划从理论和实验两方面开展这项工作.由于国际上在该领域的研究才刚刚起步,所以无论是从基础研究还是从器件应用的角度,本项目都具有非常重要的意义.

英文摘要

Photonic crystal all-optical functional devices such as all-optical switches, optical diodes, and bistable devices will play an important role in optical telecommunication and signal processing in the future. Nonlinear photonic crystals have been considered as the most promising candidate for realizing such all-optical functional devices. In order to achieve the target of ultrafast, low comsumption and comapct devices, the study of nonlinear photonic crystals has become the focus of researchers all over the world. However, the dynamical response of nonlinear photonic crystals is a key issue to be investigated. This project focuses on the dynamical respoinses of various nonlinear photonic crystal structures (especially single and coupled defects), such as the bistable property, the unidirectional transmission behavior, and the optically-controlled delay etc. These properties are the fundation for the construction of all-optical devices. The investigation of these physical properties and the exploration of their applications in all-optical functional devices are the central point of our research. We plan to carry out the investigation theoretically and experimenttally. Since there is only few research in this field, this project is important from the viewpoints of both fundamental research and device application.