Stable frequency transfer for clock synchronization for telecom networks

Abstract A stable and reliable clock synchronization system that transfers reference clocks to nodes is essential for telecom networks. Mainly, the of networks carried out through satellite links. However, evolving ubiquitous wireless communications, especially in some harsh environments, such as underground trenches, satellite-based scheme bears inevitable obstacles, which may cause strategic risks networks, since no control manipulation can be imposed on systems. Therefore, ensure robust operation with performance guarantees, auxiliary means are desirable assist solely based In this article, we report a phase-stabilized frequency signal transmission branching optical fiber Particularly, phase fluctuation due carriers separation link compensated by feedback network, employs high-precision voltage-controlled oscillator phase-locked loop drive acousto-optic shifter fast correction. Furtherly, factors limitations distribution analyzed. Eventually, experiment results obtained show stabilized fiber-optic transfer used method high accuracy.