Distributed optical fiber broadband stable-phase transmission system and method based on ring topology

Abstract

The invention discloses a distributed optical fiber broadband stable-phase transmission system and method based on ring topology, and the system comprises a broadband frequency source, an optical fiber frequency stable-phase transmission unit, N user units, and M optical amplification units. The optical fiber frequency stable-phase transmission unit is provided with a first port, a second port, and a third port. The output end of the broadband frequency source is connected with a first port of the optical fiber frequency stable-phase transmission unit, and a second port of the optical fiber frequency stable-phase transmission unit is connected with a third port of the optical fiber frequency stable-phase transmission unit through N user units and M optical amplification units in sequence to form a single-fiber bidirectional series annular topological path; while distributed optical fiber broadband stable-phase transmission is realized, the influence of environmental factors such as internal temperatures of different transmitting stations on an optoelectronic device can be avoided, and the defects of large size and complex control of a central station optical fiber frequency stable-phase transmission unit system along with increase of distributed nodes can also be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of optical fiber broadband transmission, in particular to a distributed optical fiber broadband phase-stable transmission system and method based on a ring topology. Background technique [0002] High-precision frequency signals have important application value in the fields of satellite navigation, aerospace, deep space exploration, reconnaissance and early warning. Optical fiber transmission has the advantages of low loss, large capacity, large bandwidth, high speed, high stability, safety and reliability, and has been widely used in the communication field. Optical fiber-based frequency transmission technology is an effective way to achieve higher-precision frequency transmission and distribution, and continues to promote the development of microwave photonics related fields. Optical fiber-based frequency transmission technology faces the problem that the transmission delay of the optical fiber link chan...

AI Technical Summary

Problems solved by technology

Optical fiber-based frequency transmission technology faces the problem that the transmission delay of the optical fiber link changes with factors such as temperature, stress, vibration, and transmission wavelength. The continuous deterioration of the frequency / phase of the transmission frequency signal cannot meet the high-precision requirements of users; in the distribution In the traditional frequency-phase stable transmission system, there is no guarantee that each user node can achieve phase synchronization / consistent frequency signal reception

[0003] For distributed frequency-stable transmission, a commonly used method is to operate multiple sets of point-to-point frequency-stable transmission systems independently, but as the number of distributed nodes increases, the entire distributed transmission system will become larger and larger, and the control will become more and more complicated

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