基于耦合式光电振荡器的注入锁定效应研究  

Injection locking effect based on coupled optoelectronic oscillator

作　　者：张景凯 李德琦 赵天麒 娄宏博 郑佳伟 刘显著[1,2] 王天枢[1,2] ZHANG Jingkai;LI Deqi;ZHAO Tianqi;LOU Hongbo;ZHENG Jiawei;LIU Xianzhu;WANG Tianshu(National and Local Joint Engineering Research Center of Space Photoelectric Technology,Changchun University of Science and Technology,Changchun 130022,China;School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China;School of Electronic Information Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学空间光电技术国家与地方联合工程研究中心,吉林长春130022 [2]长春理工大学光电工程学院,吉林长春130022 [3]长春理工大学电子信息工程学院,吉林长春130022

出　　处：《应用光学》2025年第1期62-70,共9页Journal of Applied Optics

基　　金：吉林省自然科学基金(20220508134RC,YDZJ202101ZYTS139,YDZJ202201ZYTS418);国家自然科学基金青年基金(62105042)。

摘　　要：提出一种基于注入锁定的耦合光电振荡器(COEO)的理论模型。通过将光纤环路和注入锁定效应等效成2个级联带通滤波器,得到注入锁定COEO的频率响应,分析注入锁定效应对COEO输出特性的影响。实验中在可调光延迟线帮助下,通过模拟频率失谐条件,确定注入锁定条件下COEO的动态输出范围,通过调节信号发生器,研究不同注入信号强度时注入锁定条件下COEO的输出信号质量。当注入信号强度为-15 dBm时,产生的微波信号的边模抑制比为59 dB,近载频端的相位噪声为-124.1 dBc/Hz@10 kHz,远载频端的杂散模式抑制度为39.3 dB,频率漂移控制在15 mHz以内。当注入信号强度为-12 dBm时,产生的微波信号的边模抑制比为66 dB,近载频端的相位噪声为-117.6 dBc/Hz@10 kHz,远载频端的杂散模式抑制度为41.2 dB,频率漂移为10 mHz。A theoretical model of coupled optoelectronic oscillator(COEO)based on injection locking was proposed.The frequency response of the injection-locked COEO was obtained by viewing the optical fiber loop and the injection-locking effect as two cascaded bandpass filter,and the influence of the injection-locking effect on the output characteristics of the COEO was analyzed.In the experiment,the dynamic output range of the COEO under injection-locked conditions was determined by simulating frequency detuning conditions with the help of a tunable optical delay line.The output signal quality of the COEO under injection-locked conditions was investigated by adjusting the signal generator for different injection signal strengths.Under the conditions of injection signal strength of−15 dBm,the generated side-mode rejection ratios of microwave signal is 59 dB.The phase noise of the injection-locked COEO at near from the carrier signal is−124.1 dBc/Hz@10 kHz,the spurious mode suppression ratio is 39.3 dB at far from the carrier signal,and the frequency drift is controlled within 15 mHz.When the injected signal strength is−12 dBm,the generated side-mode rejection ratios of microwave signal is 66 dB.The phase noise of the COEO at near from the carrier signal is−117.6 dBc/Hz@10 kHz,the spurious mode suppression ratio is 41.2 dB at far from the carrier signal,and the frequency drift is 10 mHz.

关 键 词：耦合式光电振荡器 注入锁定 注入信号强度 单音微波信号 高信噪比 

分 类 号：TN206[电子电信—物理电子学]