B. Wang, C. Gao, W. L. Chen, J. Miao, Y. Bai, T. Li, L. J. Wang
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Fiber-based time and frequency dissemination between THU and NIM
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.
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