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【学术动态】佐治亚大学Mable Fok教授学术报告会顺利举行

发布时间:2016-11-22 20:34

        2016年11月4号下午,美国佐治亚大学(University of Georgia)的Mable Fok教授来访,并在武汉光电国家实验室A302作了题为“Fill the Needs of Wideband Dynamic Microwave System: From Photonics to Neuromorphic”的精彩学术报告。讲座由武汉光电国家实验室董建绩教授主持,诸多研究生、本科生聆听了此次报告。
        在此次讲座中,Mable Fok教授论述了她在动态多波段通讯、频谱共存全双工系统和非协同系统中干扰规避上的研究,细致而不失生动地介绍了与此相关的技术成果——自干扰消除技术和可调多波段射频滤波器。自干扰消除技术结合了电子和光子技术的优势,在不同的频段上分别获得了带宽220MHz、消除深度45dB和带宽5.5GHz、消除深度30dB等的优异结果,这在目前已有的研究报告中尚属首次。可调多波段射频滤波器则是采用Lyot环形滤波器对宽带光源进行频谱切割以产生光频梳,并通过对Lyot滤波器中偏振状态的控制调节光频梳的频谱特性,得到了具有全阻滤波、单通带滤波和多通带滤波特性的可调滤波器,其旁瓣抑制比达到46dB。接着,Mable Fok教授更是将神经算法引入到光子学技术中,介绍了两者的相结合以及相关的光学系统实现。
        Mable Fok教授精彩的讲解引起了在场师生的极大兴趣,提问不断,会场气氛热烈。
       
        以下是
Mable Fok教授讲座信息:

Title:Fill the Needs of Wideband Dynamic Microwave System: From Photonics to Neuromorphic
时 间: 2016年11月4号 下午2点
地 点: 武汉光电国家实验室( 筹) A302
报告人: Prof. Mable Fok    Electrical and Electronics Engineering, University of Georgia, USA

Biography:
Dr. Mable Fok received her B.S., MS, and Ph.D from the Chinese University of Hong Kong studying photonic signal processing for high-capacity optical communications. She finished her postdoctoral training at Princeton University in network security and neuromorphic processing prior to joining University of Georgia as an Assistant Professor of the College of Engineering. Her research lab – WAVE Lab, aims to bring fiber optics and photonics techniques to inter-disciplinary areas, by understanding, designing, building a wide range of photonics based systems. Her work has been funded by National Science foundation (NSF), Defense Advanced Research Projects Agency (DARPA), UGA Office of the Vice President for Research, and Oak Ridge Associated Universities. Dr. Fok is the recipient of the Excellence in Research Faculty Award, University of Georgia Research Mentoring Award, and Ralph E. Powe Junior Faculty Enhancement Award.

Abstract:
Microwave system is an essential element in commercial, civilian, federal, and defense marketplace. It governs a variety of systems including wireless communications, satellite communications, sensor networks, instrumentation, and warfare systems. The demand of anywhere anytime high-quality service imposes challenges to existing microwave processing systems, due to the tight requirement on mobility, dynamic, adaptation, bandwidth, and operational frequency. Our research focuses on the use of both photonics techniques and neuromorphic algorithms for the development of enabling technologies for wideband, dynamic and adaptive microwave systems. During this seminar, Dr. Fok will discuss the technologies they developed for dynamic multiband communications, spectral-coexist full-duplex system for air-vehicle, and jamming avoidance in uncoordinated communications.