Ultra-low noise microwave frequency generation based on optical frequency comb

被引：1
作者：
Shao Xiao-Dong [1 ,2 ]
Han Hai-Nian [1 ]
Wei Zhi-Yi [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
来源：
ACTA PHYSICA SINICA | 2021年 / 70卷 / 13期
关键词：
optical frequency comb; microwave frequency generation; microwave photonics; phase noise; PHASE-NOISE; FIBER LASER; NOBEL LECTURE; STABILITY; SIGNALS; OSCILLATORS; SYNCHRONIZATION; INTERFEROMETRY; FOUNTAIN;
D O I：
10.7498/aps.70.20201925
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Low noise microwave frequency has important applications in radar, long baseline interferometer and other fields. The phase noise of microwave signal generated by optical frequency comb is lower than 100 dBc/Hz at 1 Hz frequency offset and -170 dBc/ Hz at high frequencies (> 100 kHz), which is the lowest in the noise produced by all existing microwave frequency generation technologies. This paper introduces the basic principle of optical frequency comb generating microwave frequency, analyzes and summarizes various kinds of noise of microwave frequency signals and noise suppressing technologies. Then the low noise measuring methods are introduced, and several typical experimental devices generating microwave frequency and the obtained results are described. With the continuous improvement of optical frequency comb and noise suppression technology, microwave frequency source with very low noise will have wider application prospects and application fields.
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页数：14
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