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All-fiber-based photonic microwave generation with 10^(-15) frequency instability

Chinese Optics Letters 2022年第2期20卷 96-99页

作者：段怡菲黄亚峰李彦黎王亚婷叶美凤李明陈胤男周佳琦汪凌珂刘亮李唐 Key Laboratory of Quantum Optics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China University of Shanghai for Science and Technology Shanghai 200093China Shanghai Key Laboratory of Solid-State Laser and Application Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China

We demonstrate an all-fiber-based photonic microwave generation with 10^(-15) frequency *** system consists of an ultra-stable laser by optical fiber delay line,an all-fiber-based"figure-of-nine"optical frequency comb,a high signal-tonoise ratio photonic detection unit,and a microwave frequency *** whole optical links are made from optical fiber and optical fiber components,which renders the whole system compactness,reliability,and robustness with respect to environmental *** instabilities of 3.5×10^(-15) at 100 s for 6.834 GHz signal and 4.3×10^(-15) at 100 s for9.192 GHz signal were achieved.

关键词： ultra-stable laser optical frequency comb photonic microwave generation

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Progress of a commercial ultra-stable laser system for photonic microwave generation prototype

Progress of a commercial ultra-stable laser system for photo...

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第十三届中国卫星导航年会

作者： ZUO Yani FANG Fang Dai Shaoyang MENG Fei CAO Shiying CHEN Weiliang LIU Kun WANG Xiumei LI Tianchu Time and Frequency Division National Institute of Metrology PKU-HKUST Shen Zhen-Hong Kong Institution Beijing Institute of Radio Measurement and Metrology

The frequency generated from an ultra-stable laser locked on a highfinesse FP cavity can be converted into a microwave signal with extremely high fidelity, combined with an optical frequency comb. This so-called ultra-stable microwave down-conversion system can be used as local oscillators for fountain clocks to improve their stabilities. This article introduces a compact ultra-stable laser system with some key features to improve its robustness. A commercial truncated cube FP cavity with a length of 25 mm is rigidly fixed by a four-point tetrahedron installation, which will provide effective isolation from vibration disturbances. The resonant frequency of the FP cavity is 1.5 μm, to utilize the commercial lasers with high stability and narrow linewidth. The 1.5 μm laser will be locked to the FP cavity by the PDH method. And the whole package is designed for easy transportation and resistance to vibration and temperature disturbance.

关键词： ultra-stable laser photonic microwave generation engineering prototype

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photonic generation of RF and microwave signal with relative frequency instability of 10^(-15)

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Chinese Physics B 2018年第3期27卷 197-200页

作者：闫露露赵文宇张颜艳邰朝阳张攀饶冰洁宁凯张晓斐郭文阁张首刚姜海峰 Key Laboratory of Time and Frequency Primary Standards National Time Service Center School of Astronomy and Space Science University of Chinese Academy of Sciences School of Science Xi'an Shiyou University

We demonstrate the ultra-stable frequency sources aiming to improve the short-time instability of primary frequency standards. These sources are realized by using photonic generation approach, and composed of ultra-stable lasers, optical- frequency-combs, optical signal detecting parts, and synthesizers. Preliminary evaluation shows that the sources produce fixed-frequency at 9.54（/9.63） GHz, 10 MHz, and tunable-frequency around 9.192 GHz with relative frequency instability of 10^-15 for short terms.

关键词： ultra-stable laser optical frequency comb photonic microwave generation

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