High precise time-synchronization based on ultrashort pulse

Author

Fan Shi ; Shengkang Zhang ; Huaiying Shang ; Hongbo Wang ; Haifeng Wang ; Hang Yi ; Zhenggang Ding ; Feng Nian ; Keming Feng

Author_Institution

Sci. & Technol. on Metrol. & Calibration Lab., Beijing Inst. of Radio Metrol. & Meas., Beijing, China

fYear

2015

fDate

12-16 April 2015

Firstpage

290

Lastpage

292

Abstract

We describe the idea of a high precise time-synchronization based on ultra-short pulse using auto-correlation method. The local pulse train is generated by a femtosecond laser system tightly locked to a local atomic clock. Then the optical pulse train is distributed to remote location. The backward propagating pulses and local pulses are combined and applied to the second-harmonic generation (SHG) crystal auto-correlator which is used for precise time delay measurements. The time compensation block is constructed by an optical delay line. We have measured calibration curve of the system. The time synchronization measurement is 10fs precision.

Keywords

atomic clocks; calibration; compensation; optical correlation; optical delay lines; optical harmonic generation; synchronisation; time measurement; SHG crystal autocorrelation method; atomic clock; backward pulse propagation; calibration curve; femtosecond laser system; optical delay line; precise time delay synchronization measurement; second-harmonic generation crystal autocorrelation method; time 10 fs; time compensation block; ultrashort optical pulse train generation; Delay effects; Free electron lasers; Laser theory; Measurement by laser beam; Synchronization; Ultrafast optics; auto-correlation method; time-synchronization; ultra-short pulse;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium & the European Frequency and Time Forum (FCS), 2015 Joint Conference of the IEEE International

Conference_Location

Denver, CO

Print_ISBN

978-1-4799-8865-5

Type

conf

DOI

10.1109/FCS.2015.7138843

Filename

7138843