级联激光器产生可调谐微波频率梳的实验研究

doi:10.12068/j.issn.1005-3026.2025.20240012

东北大学学报（自然科学版） ›› 2025, Vol. 46 ›› Issue (6): 26-31.DOI: 10.12068/j.issn.1005-3026.2025.20240012

级联激光器产生可调谐微波频率梳的实验研究

杨永超¹^,², 赵清春¹^,², 朱天意¹^,², 吴宾¹^,²

^1.东北大学秦皇岛分校计算机与通信工程学院，河北秦皇岛 066004
^2.东北大学秦皇岛分校河北省海洋感知网络与数据处理重点实验室，河北秦皇岛 066004

收稿日期:2024-01-11 出版日期:2025-06-15 发布日期:2025-09-01
作者简介:杨永超（1998—），男，山西晋中人，东北大学硕士研究生
赵清春（1982—），男，山东沂南人，东北大学副教授，硕士生导师.
基金资助:
国家自然科学基金资助项目(62101113);中央高校基本科研业务费专项资金资助项目(2123024)

Experimental Investigations on Generation of Tunable Microwave Frequency Combs by Cascading Lasers

Yong-chao YANG¹^,², Qing-chun ZHAO¹^,², Tian-yi ZHU¹^,², Bin WU¹^,²

^1.School of Computer and Communication Engineering，Northeastern University at Qinhuangdao，Qinhuangdao 066004，China
^2.Hebei Key Laboratory of Marine Perception Network and Data Processing，Northeastern University at Qinhuangdao，Qinhuangdao 066004，China. Corresponding author：ZHAO Qing-chun

Received:2024-01-11 Online:2025-06-15 Published:2025-09-01

摘要/Abstract

摘要：

为了获得高性能的微波频率梳，提出了基于3个激光器(ML,IL,SL)级联注入产生可调谐微波频率梳的全光方案.该方案无需外部微波信号源调制，是一套全光产生装置.介绍了实验装置及工作原理，通过实验分析了激光器的泵浦电流、注入光功率、反馈光功率以及2个激光器中心频率失谐对生成微波频率梳信号的梳线数目、带宽、峰值最大功率、频率间隔的影响.结果表明，当可调光衰减器VOA1，VOA2和VOA3的功率衰减值分别为13，13和21.5 dB，SL的泵浦电流为56.1 mA，ML和IL之间频率失谐为70.625 GHz时，可以获得带宽为11.87 GHz的微波频率梳信号.

关键词: 微波频率梳, 光生微波, 激光器, 光注入, 光反馈

Abstract:

In order to obtain high-performance microwave frequency combs， an all-optical scheme for generating a tunable microwave frequency comb using three lasers in cascading injection is proposed. This scheme does not require external modulation from a microwave signal source， making it a fully optical generation device. The experimental setup and working principle are introduced. The impacts of various factors， namely the pump current， injected optical power， feedback optical power， and central frequency detuning between two lasers， on the number of comb lines， bandwidth， peak maximum power， and frequency spacing of the generated microwave frequency comb signals are analyzed by experiments. The results indicate that when the power attenuation values of VOA1， VOA2， and VOA3 are 13， 13 and 21.5 dB， respectively， the pump current of SL is 56.1 mA， and the frequency detuning between ML and IL is 70.625 GHz， a microwave frequency comb signal with a bandwidth of 11.87 GHz can be obtained.

Key words: microwave frequency comb （MFC）, optically generated microwave, laser, optical injection, optical feedback

中图分类号:

TN 248.4

杨永超, 赵清春, 朱天意, 吴宾. 级联激光器产生可调谐微波频率梳的实验研究[J]. 东北大学学报（自然科学版）, 2025, 46(6): 26-31.

Yong-chao YANG, Qing-chun ZHAO, Tian-yi ZHU, Bin WU. Experimental Investigations on Generation of Tunable Microwave Frequency Combs by Cascading Lasers[J]. Journal of Northeastern University(Natural Science), 2025, 46(6): 26-31.

图/表 6

图1 基于3个激光器级联注入产生微波频率梳的实验装置图注：ML—主激光器; IL—中间激光器; SL—从激光器; PC—偏振控制器; VOA—可调光衰减器; OC—光环行器; PD—光电探测器; ESA—频谱分析仪.

Fig.1 Experimental diagram of the generation of the microwave frequency comb based on the cascading injection utilizing three lasers

图2 VOA1功率衰减值设置为10 dB时获得的MFC

Fig.2 MFC obtained when VOA1 power attenuation value is set to 10 dB

图3 SL泵浦电流对生成MFC信号的影响

Fig.3 Influence of SL pump current on the generated MFC signals

图4 VOA1，VOA2不同功率衰减值对生成MFC信号的影响（a）—VOA1；（b）—VOA2.

Fig.4 Influence of the different power attenuation values of VOA1 and VOA2 on the generated MFC signals

图5 VOA3不同功率衰减值对生成MFC信号的影响

Fig.5 Influence of different power attenuation values of VOA3 on the generated MFC signals

图6 频率失谐对生成MFC信号的影响

Fig.6 Influence of frequency detuning on the generated MFC signals

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级联激光器产生可调谐微波频率梳的实验研究

Experimental Investigations on Generation of Tunable Microwave Frequency Combs by Cascading Lasers

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