题目:Photonic Dispersive Delay Line for Broadband Microwave Signal Processing
报告人:张杰君博士(渥太华大学)
主持人:冯新焕教授
时间:2016年12月23日上午9:00.
地点:曾宪梓科学馆405会议室
报告摘要:
The development of communications technologies has led to an ever-increasing demand for a higher speed and wider bandwidth of microwave signal processors. To overcome the inherent electronic speed limitations, photonic techniques have been developed for the processing of ultra-broadband microwave signals. A dispersive delay line (DDL) is a key photonic device that can be used to implement signal processing functions, such as time reversal, time delay, dispersion compensation, Fourier transformation and pulse compression. Compared with an electrical delay line, a photonic DDL has a much wider bandwidth and can be used for the processing of a microwave signal with a much wider bandwidth. In this talk, I will review our recent work using photonic DDLs for the processing of broadband microwave signals. Two types of DDLs are to be discussed, a linearly chirped fiber Bragg grating (LCFBG) based DDL and an optical dispersive loop (ODL) based DDL. Signal processing functions including microwave time reversal, microwave temporal convolution, time-stretched sampling, microwave waveform generation with an extended temporal duration, and wideband true-time delay beamforming will be presented.
报告人简介:
张杰君2010年毕业于哈尔滨工业大学电子科学与技术专业,2012年获得华中科技大学光学工程硕士学位,2016年8月在加拿大渥太华大学完成博士学业和论文后,在渥太华大学微波光子实验室开始博士后研究工作。研究方向包括基于光纤系统的微波信号的产生和处理、基于硅光子的微波光子系统、基于三五族材料的微波光子系统和光纤传感技术。
张杰君以第一作者在Optica, Optics Letters, Journal of Lightwave Technology等期刊发表文章14篇,第一作者会议论文7篇,专利授权3个。2015年获得国际光子学会教育奖学金,2014年IEEE光子学会日本分会青年科学家奖,2013年硕士毕业论文《基于微纳结构的光纤激光器传感理论及应用研究》被评为湖北省优秀硕士论文。
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光子技术研究院
2016年12月14日