Tunable Microwave Frequency Comb Generation Based on Actively Mode-Locked OEO

被引：10
|
作者：
Li, Yan [1 ,2 ]
Wang, Muguang [1 ,2 ]
Gao, Pufeng [1 ,2 ]
Zhang, Jing [1 ,2 ]
Yin, Bin [3 ]
Wang, Chuncan [1 ,2 ]
Fan, Guofang [1 ,2 ]
机构：
[1] Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network, Minist Educ, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Minist Educ, Adv Telecommun Network, Beijing 100044, Peoples R China
[3] Ocean Univ China, Ocean Remote Sensing Inst, Qingdao 266100, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2023年 / 35卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Microwave filters; Microwave frequency comb; active mode-locking; optoelectronic oscillator; SEMICONDUCTOR-LASERS; LOCKING;
D O I：
10.1109/LPT.2023.3234391
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 photonics-assisted method for tunable microwave frequency comb (MFC) generation based on an actively mode-locked optoelectronic oscillator (AML-OEO) is proposed and experimentally demonstrated in this letter. Two key factors for the proposed system, periodic gain modulation and widely tunable center frequency, are implemented by an externally introduced intensity-modulated optical signal and a microwave photonic filter (MPF) based on the phase-shifted fiber Bragg grating (PS-FBG) respectively. Unlike a conventional OEO with only one dominant oscillation mode, an AML-OEO operates in a stable multimode oscillation state and thus can generate MFC signal. Through simply adjusting the center frequency of the PS-FBG-based MPF, the center frequency of the generated MFC changes accordingly. In the proof-of-principle experiment, two sets of MFC signals with center frequency tuning from 3.5 GHz to 6.5 GHz and frequency intervals of 1.02 MHz and 340.46 kHz are generated.
引用
收藏
页码：221 / 224
页数：4
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