Qian Cao, Zhou Tong, Lei Liu, Jialiang Wang, Kang Ying, Fufei Pang, Youzhen Gui. Simultaneous transmission of time-frequency and data with co-amplification over urban fiber links[J]. Chinese Optics Letters, 2024, 22(1): 011201
- Chinese Optics Letters
- Vol. 22, Issue 1, 011201 (2024)
Fig. 1. Schematic of the urban fiber link connecting the SIOM, the SHB, and the SIMT.
Fig. 2. General scheme of transmitting metrological signals with data in the public telecommunication network. BPF, bandpass filter; PD, photodetector; VCO, voltage-controlled oscillator; DFB, distributed feedback laser; LF, loop filter; PS, power splitter.
Fig. 3. Measured overlapping Allan deviation of the RF signal.
Fig. 4. Time deviation (TDEV) of the 1 PPS signal.
Fig. 5. Frequency instability (OADEV) of the RF signal with different input power ratios.
Fig. 6. Instability (OADEV) of the RF signal over a 160-km urban fiber link.
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