Large-Tap Microwave Photonics Filter Based on Recirculating Frequency Shifting Loop

被引：8
|
作者：
Wang, Jingjing [1 ]
Chen, Minghua [1 ]
Chen, Hongwei [1 ]
Yang, Sigang [1 ]
Xie, Shizhong [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2014年 / 26卷 / 12期
基金：
美国国家科学基金会;
关键词：
Microwave photonics filters; optical frequency comb; Q-factor enhancement; recirculating frequency shifting loop; TIME; INCOHERENT; NOISE; FIBER;
D O I：
10.1109/LPT.2014.2319297
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 large-tap and tunable microwave photonics (MWPs) filter based on a recirculating frequency shifting loop has been proposed and experimentally demonstrated. To improve the Q-factor value of the MWP filter, we used a simple recirculation loop to economically generate a large-tone optical frequency comb in this scheme. In addition, the cumulative effect in loop structure, which affects the characteristics of the generated taps significantly, is analyzed to predict the performance of the proposed filter. In experiments, we realized a 70-tap filter at 4.5 GHz with the Q-factor value exceeding 70. Also, a filter with center frequency tunable from 1 to 8 GHz is demonstrated.
引用
收藏
页码：1219 / 1222
页数：4
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