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

A time-frequency synchronization and signal transmission technology, applied in multiplexing communication, optical multiplexing system, time-division multiplexing system, etc. Effect

Active Publication Date: 2020-04-10
电信科学技术第五研究所有限公司
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 physic

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical fiber one-way time-frequency synchronization signal transmission method and device, medium and equipment
  • Optical fiber one-way time-frequency synchronization signal transmission method and device, medium and equipment
  • Optical fiber one-way time-frequency synchronization signal transmission method and device, medium and equipment

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0048] Depend on figure 2 It can be seen that when the IRIGB-DC code signal is sampled by the high-precision external clock input by the external clock interface of the photoelectric converter, there will be no phase jitter relative to the quasi-time delay of the high-precision time-frequency signal or the jitter is within an acceptable range.

[0049] On the public network side, taking the short-term stability of ±0.03ppm external clock 10MHz input as an example, the phase jitter generated when a stable IRIGB-DC code electrical signal is extracted unidirectionally and converted into an optical signal does not exceed Δt1=±30ns.

[0050] On the isolated network side, the photoelectric converter works in the mode of extracting the line clock, and the jitter generated when converting this optical signal into an electrical signal does not exceed Δt2=±30ns.

[0051] At this time, the IRIGB-DC code electric signal is introduced into the isolated network user equipment, and the time...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04J3/06H04J14/02
CPCH04J3/0617H04J3/0635H04J14/0227H04J14/0287
Inventor 黄嘉王茂凌何定高邓皓张骏杨张恒
Owner 电信科学技术第五研究所有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap