Optical fiber one-way time-frequency synchronization signal transmission method and device, medium and equipment

Abstract

The invention discloses an optical fiber one-way time-frequency synchronization signal transmission method and device, a medium and equipment. The method comprises the following steps of: correspondingly converting a high-precision time electric signal and a high-precision frequency electric signal of a public network into a time optical signal and a frequency optical signal through a photoelectric converter, multiplexing the time optical signal and the frequency optical signal into the same single optical fiber link through an optical multiplexer, recovering a high-precision time optical signal and a high-precision frequency optical signal from the single optical fiber link through a demultiplexer, and correspondingly converting the high-precision time optical signal and the high-precision frequency optical signal into a high-precision time electric signal and a high-precision frequency electric signal through a photoelectric converter. According to the method, under the condition that a time-frequency taming device does not need to be added to an isolation network side, a public network with a close physical distance is selected as the isolation network to import single-fiber same-fiber one-way low-loss high-precision time-frequency signals, and isolation network time and frequency equipment directly uses imported time-frequency electric signals to perform time-frequency synchronization with the public network.

Description

technical field [0001] The present application relates to the field of optical fiber one-way time-frequency transmission, in particular, to a method, device, medium and equipment for optical fiber one-way time-frequency synchronization signal transmission. Background technique [0002] In some isolated networks, there are high requirements for network security. In order to prevent services in the network from being attacked or tampered with, it is necessary to physically isolate the isolated network and prohibit information exchange between certain isolated networks and the public network. However, the business operation of the isolated network requires time-frequency synchronization for support. [0003] To ensure physical isolation from the public network. At present, the method of time synchronization in an isolated network generally adopts independent synchronization of each node. [0004] The independent synchronization of each node generally uses independent time-fr...

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Problems solved by technology

[0008] This application provides a method, device, medium and equipment for optical fiber one-way time-frequency synchronization signal transmission to solve the existing technical problems, so that on the condition that the isolated network side does not need to add time-frequency taming equipment, select a company with a close physical distance The network is used to import single-fiber co-fiber one-way low-loss high-precision time-frequency signals for the isolated network, and the time-frequency and frequency-consuming devices of the isolated network directly use the imported time-frequency electrical signals to synchronize time-frequency with the public network

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