Ultrawide Tunable Microwave Photonic Notch Filter Based on Stimulated Brillouin Scattering

被引：72
|
作者：
Zhang, Weiwei [1 ]
Minasian, Robert A. [1 ]
机构：
[1] Univ Sydney, Sch Elect & Informat Engn, Inst Photon & Opt Sci, Sydney, NSW 2006, Australia
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2012年 / 24卷 / 14期
基金：
澳大利亚研究理事会;
关键词：
Microwave filters; microwave photonics; notch filters; stimulated Brillouin scattering (SBS);
D O I：
10.1109/LPT.2012.2198638
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 new ultrawide tunable microwave photonic notch filter that exhibits a very high resolution is presented. It is based on a stimulated Brillouin scattering technique, which processes the modulation sidebands generated by a dual-drive Mach-Zehnder modulator. Tuning is realized by changing the drive frequency to an electro-optic intensity modulator. Experimental results demonstrate a high-resolution notch filter with a 3-dB bandwidth of 82 MHz, a notch depth of over 40 dB, a flat passband from near DC to 20 GHz with very low ripples, and a notch frequency that can be continuously tuned with shape invariance over an ultrawide frequency range from 2 to 20 GHz.
引用
收藏
页码：1182 / 1184
页数：3
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