A Multiband Microwave Photonic Filter Based on a Strongly Coupled Microring Resonator With Adjustable Bandwidth

被引：3

作者：

Chen, Yuan ^{[1
]}

Fan, ZhiQiang ^{[1
]}

Lin, Yue ^{[1
]}

Jiang, Di ^{[1
]}

Li, Xiang ^{[1
]}

Qiu, Qi ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Optoelect Sci & Engn, Chengdu 610054, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2023年 / 15卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Microwave filters; Bandwidth; Passband; Resonator filters; Phase modulation; Radio frequency; Optical resonators; Microwave photonic filter; multiband filter; comb filter; microring resonator; phase modulation to intensity modulation conversion (PM-IM); DESIGN;

D O I：

10.1109/JPHOT.2023.3237843

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 bandwidth-tunable multiband microwave photonic filter (MPF) using a strongly coupled microring resonator (MRR) with optical phase modulation is demonstrated theoretically and experimentally. Two notches of the MRR adjacent to the optical carrier break the intrinsic balance of the phase-modulated signal and then two sub-MPFs are formed thanks to the conversion from phase modulation to intensity modulation (PM-IM). The frequency responses of the two sub-MPFs are superimposed to form a passband with a fixed center frequency. Due to the periodicity of the MRR transmission spectrum, multiple passbands separated by a certain spacing appear in the frequency domain and combine to form a multiband MPF, whose bandwidth can be adjusted by tuning the wavelength of the carrier. The tunable bandwidth and shape factors ranging from 0.73 GHz to 2.73 GHz and 5.06 to 1.38 are experimentally performed. The number of passbands can be reconfigured. The proposed multiband MPF has the potential to be employed in modern multi-standard wireless communication systems.

引用

页数：6