Fig. 1. Principle of round-trip delay correction

Fig. 2. Relation between time jitter and the frequency of remote signals under different conditions (vertical axis is logarithmic axis). (a) Under different system noise floors; (b) under different transmission distances

Fig. 3. Principle of the optical and electrical heterodyne phase detection

Fig. 4. Principle of phase control of high-frequency signal via single sideband modulation

Fig. 5. Control principle of cascaded optical delay line

Fig. 6. Principle of phase-stable optically carried microwave signal transmission system based on phase pre-compensation

Fig. 7. Phase-stable optically carried microwave signal transmission system (dual-channel) based on phase pre-compensation

Fig. 8. Frequency stability and time jitter of the transmitted 100 GHz signal under different transmission distances. (a) Frequency stability; (b) time jitter

Fig. 9. Principle of time-stable optically carried microwave signal transmission system based on optical delay compensation

Fig. 10. Time-stable optically carried microwave signal transmission system (3-channel)

Fig. 11. Phase stability of a 25.00 GHz signal after 21 km transmission