| 谐波锁模光电振荡器（特邀） |
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| 引用本文： | 曾珍,张旨遥,章令杰,张尚剑,李和平,刘永.谐波锁模光电振荡器（特邀）[J].红外与激光工程,2021,50(7):20211053-1-20211053-5. |
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| 作者姓名： | 曾珍 张旨遥 章令杰 张尚剑 李和平 刘永 |
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| 作者单位： | 电子科技大学 光电科学与工程学院 电子薄膜与集成器件国家重点实验室，四川 成都 611731 |
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| 基金项目： | 科技部国家重点研发计划项目(2019YFB2203800)；国家自然科学基金重大科研仪器研制项目(61927821)；中央高校基本科研业务费面向重大需求类项目(ZYGX2020ZB012) |
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| 摘 要： | 提出了一种主动锁模光电振荡器（OEO）方案，可以实现高阶谐波锁模，从而产生具有高重复频率的微波脉冲信号。在所提方案中，通过在OEO腔内的电光强度调制器直流偏置端口引入一个正弦驱动信号，当该正弦信号的频率为OEO环腔自由光谱范围的整数倍时，实现基频（）或谐波（）锁模，输出重复频率为的微波脉冲信号。实验中分别实现了10阶、50阶和100阶谐波锁模，输出微波脉冲信号的重复频率分别为360 kHz、1.8 MHz和3.6 MHz。该方案为脉冲多普勒雷达等系统应用提供了一种全新的、具备低相噪潜力的微波脉冲信号产生的技术途径。
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| 关 键 词： | 微波光子学 光电振荡器 谐波锁模 微波脉冲信号产生 |
| 收稿时间： | 2021-04-15 |
Harmonically mode-locked optoelectronic oscillator (Invited) |
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| Affiliation: | State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China |
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| Abstract: | An actively mode-locked optoelectronic oscillator (OEO) scheme was proposed to generate high-repetition-rate microwave pulse signals based on high-order harmonic mode locking. In the proposed scheme, the bias port of the electro-optic intensity modulator in the cavity was driven by a sinusoidal signal. The frequency of the sinusoidal signal () was set to betimes of the free spectral range of the OEO cavity to realize fundamental () and harmonic () mode locking, where the repetition rate of the generated microwave pulse signal was equal to. In the proof-of-concept experiment, 10th-, 50th- and 100th-order harmonic mode locking were realized, where the repetition rate of the generated microwave pulse signal was 360 kHz, 1.8 MHz and 3.6 MHz, respectively. The proposed actively mode-locked OEO scheme provides a new way to generate low-phase-noise microwave pulse signals for pulse Doppler radar application. |
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