基于快慢光技术的可调谐微波光子滤波器

项目名称： 基于快慢光技术的可调谐微波光子滤波器

项目编号： No.61308003

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： 刘金梅

作者单位： 华东师范大学

项目金额： 28万元

中文摘要： 作为微波光子学领域实现全光处理的关键技术之一，微波光子滤波器具有低损耗、高带宽、抗电磁干扰以及可重构等优点，成为微波光子学领域内的热门研究。滤波器的可调谐性是高性能灵活滤波器的一个主要特性。已有一些解决方案可实现可调性包括利用光纤延时线、高色散光纤和光纤光栅等，但仍然存在局限。近期，利用快慢光技术实现光控延迟，从而在实现滤波器的可调谐上表现出了许多独特的优点。针对以上现状及我们课题组在受激布里渊散射、交叉增益调制快慢光技术研究的基础上,拟提出基于快慢光技术实现微波相移，从而实现可调谐的微波光子滤波器的研究。采用的方法是在双抽头微波光子滤波器的一个臂中嵌入快慢光装置，利用交叉增益调制快慢光技术实现滤波器的可调谐。拟实现的滤波器能在调谐过程中保持自由频谱宽度（FSR）不变，即滤波器的频谱形状不变。该系统结构新颖，具有宽带可调的特点，从而推动其在微波光子滤波器、微波信号处理等领域的应用。

中文关键词： 快慢光；光脉冲时域操控；光纤Mach-Zehnder 干涉仪；微波光子滤波器；

英文摘要： As one of the core techniques to realize the all-optical signal processing, a high quality of microwave photonics filter (MPF) has been attached much attention around the world due to the many advantages such as low loss, high bandwidth, immunity to electromagnetic interference and reconfigurability. The tunability is one of the most important factors for a high-quality MPF. There have been some approaches to realize the tunability including optical fiber delay line, high dispersion fibers and fiber Bragg grating. However, there are still some limitations. Recently, tunable microwave photonics filter based on fast and slow light technology has been reported as a good performer. According to the present situation, and the speed of light control based on stimulated Brillouin scattering, cross-gain modulation on the basis of our research , we propose to realize the tunable microwave photons filter based on the microwave phase shift by slow and fast light technique. In this project, MPF is supposed to be tunable in terms of controlling microwave phase shift by incorporating a slow and fast system in one of the arms.The filter can keep unchanged free spectral range(FSR) in tuning process. The system has the characteristic of novel structure, simple control, and broadband tunability. The scheme could become increasing

英文关键词： Slow fast light；temporal light pulse manipulation；fiber Mach-Zehnder interferometer；microwave photonic filter；