硅基集成时域隐身器件机理研究

项目名称： 硅基集成时域隐身器件机理研究

项目编号： No.61475052

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 董建绩

作者单位： 华中科技大学

项目金额： 82万元

中文摘要： 时域隐身，一种基于时空二元性原理从空间隐身引申而来的技术，自2011年首次被提出后，在国际上掀起了一股研究热潮，它在保密通信和信息安全领域有潜在应用价值。时域隐身的核心部件是时域透镜，然而时域透镜在时间孔径、转换效率和响应带宽方面尚存在若干难点和关键物理问题，阻碍时域隐身的应用。本项目创新性地提出了基于电调硅基微环谐振器的时域隐身新方案，利用电调微环的谐振频率漂移量随调制电压线性变化的特点实现大带宽、大时域孔径和高转换效率的时域透镜功能，从而克服传统时域透镜存在的若干缺陷。本项目对高Q值电调微环谐振器的频谱漂移特性进行理论建模、性能分析和实验测试，重点解决器件制备过程中的工艺难题，如电调微环中的载流子色散效应对折射率和吸收的调控机制和电光调制效率增强的问题，并对时域隐身的系统原型进行实验检验和优化，最终探索一套相对完善的时域隐身的理论体系、实验平台及其在信息安全和预警系统的潜在应用。

中文关键词： 时域隐身；硅光子学；时域透镜；光信号处理

英文摘要： Temporal cloaking, a new concept extended by spatial cloaking based on time-space duality, has been attracting lots of interests since it was first proposed in 2011. The temporal cloaking technology may have potential applications in secure communications and information security. Temporal cloaking system is highly dependent on a key component, namely, the time lens. However, there were still crucial challenges in state-of-the-art time lenses in terms of time aperture, power efficiency, and response bandwidth, etc, which greatly impede the application of the temporal cloaking. In this proposal, we put forward a new temporal cloaking scheme based on silicon micro-ring resonator embedded with PN junctions. The time lens is implemented by the fact that the resonant frequency shift of ring resonators is linear varied with the driving voltage, which shows large time aperture, high power efficiency, and fast response. Then the temporal cloak can be implemented by time lens and dispersion medium. And problems mentioned above in time lens will be well settled. We will carry on the study in three aspects, device design, device fabrication, and temporal system experiments. Especially, we focus on the key study of integrated chip performances, such as the impact of carrier dispersion effect on the refractive index and absorption, and enhancement of electron-photon interaction. Finally, we can obtain comprehensive theory about temporal cloaking and experimental platform, and bring forward some potential applications in secure communications.

英文关键词： Temporal cloaking;silicon photonics;time lens;optical signal processing