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

页码：221 / 224

页数：4

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