面向高稳定可调光电振荡器的频率漂移补偿技术研究

With the rapid development of modern high-frequency electronic devices, highly stable and tunable optoelectronic oscillator has attracted widespread attention and concern due to its ultra-low phase noise properties, which will also become the ideal signal generator for high frequency electronic systems. However, although the short-term frequency stability is a prominent feature of OEOs, its system has led to the problem of long-term frequency drift. The traditional phase-locked frequency stabilization of an external reference source cannot be applied to broadband tunable optoelectronic oscillator, and other frequency stabilization techniques lead to deterioration of the phase noise near the carrier frequency. Therefore, new demands and challenges are raised for the frequency drift compensation technology. This project will focus on the new issues and challenges brought forward by improving the long-term frequency stability of the tunable optoelectronic oscillator. We will investigate systematically the key technologies of the frequency drift compensation module from the perspectives of model building and mechanism, with an emphasis on solving the problems of frequency stabilization in a wide frequency range and over a wide temperature range，the suppression of additional phase noise, and high-dynamic, high-precision compensation control scheme, which also provides important theoretical basis and technical support for the development and application of the highly stable and tunable optoelectronic oscillator.

随着现代高频电子设备的飞速发展，高稳定可调光电振荡器因超低相位噪声特性而受到越来越广泛的重视和关注，成为高频电子系统非常理想的频率源。然而，光电振荡器的短期频率稳定性能虽然突出，但是系统构成也决定了其长期频率漂移的不足之处，目前传统的外参考锁相稳频技术不适用于宽带可调振荡器，并且众多其他稳频技术会引起振荡器输出信号近载频处相位噪声恶化，这对面向高稳定可调光电振荡器的频率漂移补偿技术提出了新的要求和挑战。本项目围绕提高可调光电振荡器长期频率稳定性带来的新问题和新挑战，在模型和机制两个方面深入系统研究频率漂移补偿模块的科学问题和关键技术，着力解决可调光电振荡器长期频率漂移补偿存在的宽带宽温自适应稳频、寄生相位噪声抑制以及大动态高精度协同补偿控制问题，最终为高稳定可调光电振荡器的发展和应用提供重要的理论基础和技术。

随着现代高频电子设备的飞速发展，高稳定可调光电振荡器因超低相位噪声特性而受到越来越广泛的重视和关注，成为高频电子系统非常理想的频率源。然而，光电振荡器的短期频率稳定性能虽然突出，但是系统构成也决定了其长期频率漂移的不足之处，目前传统的外参考锁相稳频技术不适用于宽带可调振荡器，并且众多其他稳频技术会引起振荡器输出信号近载频处相位噪声恶化，这对面向高稳定可调光电振荡器的频率漂移补偿技术提出了新的要求和挑战。本项目围绕提高可调光电振荡器长期频率稳定性带来的新问题和新挑战，在模型和机制两个方面深入系统研究频率漂移补偿模块的科学问题和关键技术，着力解决可调光电振荡器长期频率漂移补偿存在的宽带宽温自适应稳频、寄生相位噪声抑制以及大动态高精度协同补偿控制问题，最终为高稳定可调光电振荡器的发展和应用提供重要的理论基础和技术。.项目建立了相关光电振荡器频率漂移机理模型并进行了相关实验验证，研究分析了高稳定可调光电振荡器的相位噪声来源，并提出多种宽带宽温大动态高精度频率漂移补偿控制方案，可在室温无温控环境下长时间稳定工作，最终实现高稳定可调低相噪光电振荡器原型系统，输出信号频率为8-12GHz可调，相位噪声优于-145dBc/Hz@10kHz，长期频率稳定度优于10-11。.项目执行期间发表SCI文章14篇，其中影响因子大于2.0的文章11篇， 国际SCI期刊通信作者特邀论文1篇；发表国际会议报告12篇；国际会议特邀报告3篇；申请国家发明专利4项；培养博士研究生3名和硕士研究生6名。