Photonic generation of microwave signals based on pulse shaping

被引：52

作者：

Chi, Hao ^{[1
]}

Zeng, Fei

Yao, Jianping

机构：

[1] Univ Ottawa, Microwave Photon Res Lab, Sch Informat Technol & Engn, Ottawa, ON K1N 6N5, Canada

[2] Zhejiang Univ, Dept Informat & Elect Engn, Hangzhou 310027, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2007年 / 19卷 / 9-12期

基金：

加拿大自然科学与工程研究理事会; 中国国家自然科学基金;

关键词：

microwave photonics; microwave signal generation; pulse shaping; radio-over-fiber;

D O I：

10.1109/LPT.2007.894979

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel approach to generating microwave signals based on optical pulse shaping is proposed and experimentally demonstrated. The proposed system consists of a femtosecond pulse laser source, a Sagnac-loop filter (SLIT), a dispersive element, and a photodetector. The spectrum of the femtosecond pulse is shaped by the SLF that has a sinusoidal spectral response. Thanks to the frequency-to-time conversion in the dispersive element, time-domain pulse exhibiting the shape of the optical power spectrum is obtained. Depending on the free-spectral range of the SLIT and the total dispersion of the dispersive element, signals with frequencies up to terahertz can be generated. A model to describe the signal generation is developed. Experimental results agree well with the theoretical analysis.

引用

页码：668 / 670

页数：3

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