首页|Long-term ultra-precision phase synchronization tech-nique for locking the repetition rate of OFCs based on FLOM-PD
Long-term ultra-precision phase synchronization tech-nique for locking the repetition rate of OFCs based on FLOM-PD
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Long-term ultra-precision synchronization between optical frequency combs(OFCs)and microwave oscillators is im-portant for various fields,including scientific observation,smart grid,positioning and navigation,etc.Here,a phase-locked loop system based on fiber loop optical-microwave phase detector(FLOM-PD)is proposed to realize the synchronization of the repetition rate of OFCs and rubidium atomic clocks.Firstly,the scheme and locking process of the system are elaborated,then the mathematical model of the system is established,and the feasibility of the scheme is proved by theoretical analysis and experimental verification.After synchronization,the instability of the system reaches 8.69×10-12 at 1 s and 2.94×10-13 at 1 000 s,indicating that the phase synchronization system can achieve ul-tra-precision and stability of OFCs repetition rate.
ZHOU Weifeng、HAO Shijie、CHEN Xing、ZHANG Wanpeng、YUE Zongjie、WU Hong
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College of Electronic Information and Optical Engineering,Nankai University,Tianjin 300350,China
Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology,Nankai University,Tianjin 300350,China
State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Tele-communications,Beijing 100876,China
Engineering Research Center of Thin Film Optoelectronics Technology,Nankai University,Tianjin 300350,China
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