Title :
Fiber-based time and frequency dissemination between THU and NIM
Author :
Wang, B. ; Gao, C. ; Chen, W.L. ; Miao, J. ; Bai, Y. ; Li, T.C. ; Wang, L.J.
Author_Institution :
Joint Lab. for Meas. Sci., Tsinghua Univ., Beijing, China
Abstract :
We build up a time and frequency dissemination system via the 80 km urban telecommunication fiber network between Tsinghua university (THU) and the National Institute of Metrology (NIM). A 9.1 GHz microwave frequency is disseminated on this link. Using the proposed phase noise compensation method, the frequency dissemination stability on the order of 7 × 10-15/s and 4.5 × 10-19/105 s has been demonstrated. In addition, we also disseminate the timing signal between THU and NIM. Using the delay time compensation method, transfer delay stability within 50 ps at measurement periods from 1s to 1000s has been demonstrated.
Keywords :
delays; optical fibre networks; phase noise; stability; NIM; THU; Tsinghua university; delay time compensation method; fiber-based time dissemination; frequency 9.1 GHz; frequency dissemination stability; microwave frequency; phase noise compensation method; time 1 s to 1000 s; time 50 ps; timing signal; transfer delay stability; urban telecommunication fiber network; Delay; Frequency modulation; Laser stability; Optical fiber communication; Phase noise; Stability criteria; Time frequency analysis;
Conference_Titel :
Frequency Control Symposium (FCS), 2012 IEEE International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1821-2
DOI :
10.1109/FCS.2012.6243591
