A single passband microwave photonic filter with enhanced flat top and shape factor based on tunable optical bandpass filter and fiber Bragg gratings

被引:2
|
作者
Zhang, Qi [1 ]
Han, Xu [1 ]
Fang, Xinyu [1 ]
Liu, Ming [1 ]
Ge, Ke [1 ]
Jiang, Hong [1 ]
Dong, Wei [2 ]
Zhang, Xindong [2 ]
机构
[1] Changchun Univ Technol, Coll Elect & Elect Engn, 2055 Yanan St, Changchun 130012, Peoples R China
[2] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, 2699 Qianjin St, Changchun 130012, Peoples R China
来源
关键词
Microwave photonic filter; fiber Bragg gratings; Shape factor; Bandwidth adjustment; STIMULATED BRILLOUIN-SCATTERING; PHASE-MODULATION; BANDWIDTH; TUNABILITY; CONVERSION; SHARP; GAIN;
D O I
10.1016/j.optlastec.2023.109838
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A single passband microwave photonic filter with enhanced flat top and shape factor is experimentally demonstrated. By utilizing a tunable optical bandpass filter (TOBF) and two fiber Bragg gratings (FBG), the transfer spectra of the filtered sidebands is modified. In order to show the advantages of the proposed photonic filter, theoretical analyses, simulation and experiments are carried out to compare with the setup based on a TOBF. On the same conditions, the 3 dB bandwidth is enlarged from 3.8 GHz to 5.1 GHz. The 1 dB fluctuation is enlarged from 1.5 GHz to 3 GHz. The shape factor is minimized from 2.76 to 1.88.
引用
收藏
页数:9
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