新型微波光子滤波器研究

发布时间：2018-04-12 10:06

本文选题：微波光子学 + IIR微波光子滤波器　；参考：《暨南大学》2015年硕士论文

【摘要】：微波光子学是光纤技术与微波技术相互渗透并紧密结合而形成的一门新兴的交叉学科,基于光子学方法的微波信号处理技术则是微波光子学研究的重要内容。微波光子滤波器是微波光子信号处理技术中最具代表性的成果之一,其借助光子器件或者光学子系统来完成传统微波滤波器同样的处理功能,具有低损耗、高带宽、抗电磁干扰、灵活的可调谐性和可重构性等优点,近年来逐渐成为微波光子信号处理领域的研究前沿,具有很高的技术先进性和应用潜力。本文主要围绕新型微波光子滤波器技术开展研究,主要包括以下几个方面:(1)探讨了实现微波光子滤波器的各类方法,系统地介绍了微波光子滤波器的基本原理及实现技术,为本论文的研究奠定理论基础。(2)提出并实现一种利用多纵模光纤激光器作为光源的IIR微波光子滤波器结构,充分利用多纵模光纤激光器相干度具有周期性和可调谐性的特点,有效的解决了微波光子滤波器中由光源相干长度长引起的自由频谱范围(Free spectral Range,FSR)的局限性,最终实现了FSR达到0.59 GHz的稳定的IIR微波光子滤波器,其响应的波动控制在2%之内。(3)提出并实现一种基于偏振调制器与偏振干涉仪的单光源非相干的负系数陷波滤波器,该滤波器具有FSR连续可调谐、信噪比高、陷波深度大等一系列优点。
[Abstract]:Microwave photonics is a new interdisciplinary subject formed by the mutual penetration and close combination of optical fiber technology and microwave technology. Microwave signal processing technology based on photonics is an important content of microwave photonics research.Microwave photonic filter is one of the most representative achievements in microwave photon signal processing technology. It uses photonic devices or optical subsystems to complete the same processing function of traditional microwave filter, which has low loss and high bandwidth.In recent years, the advantages of anti-electromagnetic interference, flexible tunability and reconfiguration have gradually become the research frontier in the field of microwave photonic signal processing, and have high technical advancement and application potential.This paper mainly focuses on the research of new microwave photonic filter technology, including the following aspects: 1) discuss various methods to realize microwave photonic filter, and introduce the basic principle and realization technology of microwave photonic filter systematically.A IIR microwave photonic filter structure using multi-longitudinal-mode fiber laser as the light source is proposed and realized, which makes full use of the periodicity and tunability of the coherence of the multi-longitudinal-mode fiber laser.It effectively solves the limitation of free spectral range (Free spectral range) caused by long coherent length of light source in microwave photonic filter, and finally realizes a stable IIR microwave photonic filter with FSR up to 0.59 GHz.A non-coherent negative coefficient notch filter based on polarization modulator and polarization interferometer is proposed and implemented. The filter has continuous tunable FSR and high signal-to-noise ratio (SNR).A series of advantages such as high notch depth and so on.
【学位授予单位】：暨南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN713

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