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Dispersion adjusting method and device of WDM system

A dispersion adjustment and dispersion technology, which is applied in transmission systems, wavelength division multiplexing systems, and distortion/dispersion elimination. It can solve the problems of having to search again, only consider service recovery, and fixation, so as to improve product competitiveness and save switching. Time, save the effect of protection

Pending Publication Date: 2021-12-17
ZTE CORP
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AI Technical Summary

Problems solved by technology

The present invention solves the technical problems that the prior art dispersion search algorithm only considers service recovery and does not consider the characteristics of actual application scenarios, that is, the OTN optical network transmission distance is basically fixed and must be re-searched after each service recovery, and further ensures the optical communication network. communication quality and application implementation

Method used

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  • Dispersion adjusting method and device of WDM system
  • Dispersion adjusting method and device of WDM system
  • Dispersion adjusting method and device of WDM system

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Embodiment Construction

[0034] image 3 It shows the principle of the dispersion search compensation method of the present invention, that is, considering the characteristics of the actual application scene, that is, the transmission distance of the OTN optical network is basically fixed and the situation of not necessarily re-searching after each service recovery, it is applied in the actual engineering site to obtain stable dispersion compensation After setting the value, increase the memory function, that is, save the stable dispersion compensation value color, so as to automatically adjust the dispersion search strategy and search range, thereby reducing the system recovery time and improving the overall system stability and customer satisfaction.

[0035] exist image 3 In the principle of the dispersion search compensation method shown, two stable dispersion compensation values, such as the optimal value -1600 and the suboptimal value -2000, are saved and applied in the actual engineering site....

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Abstract

The invention discloses a dispersion adjustment method and device based on a WDM system, and the method comprises the steps: monitoring service interruption time, and determining whether the service interruption time is first service interruption time or enters second service interruption time from the first service interruption time; when the service interruption time is determined to be the first service interruption time, performing dispersion compensation on the WDM system by using a dispersion compensation value obtained by an initialization parameter; when the service interruption time is determined to be the second service interruption time, searching a required dispersion compensation value in a default dispersion compensation search range obtained by the initialization parameter, and performing dispersion compensation on the WDM system by using the searched required dispersion compensation value.

Description

technical field [0001] The invention relates to the field of DWDM (Dense Wavelength Division Multiplexing) optical communication and high-order modulation technology, in particular to a dispersion adjustment method and device for a WDM (Wavelength Division Multiplexing) system. Background technique [0002] With the development of society and the advancement of technology, people's demand for communication system bandwidth is increasing. With the application of 5G and the prosperity and development of the Internet, Internet companies have higher and higher requirements for the bandwidth and stability of the data communication network. In this context, the application scenarios of single-wavelength 200G, 400G, and 600G on the line side continue to increase. The dispersion compensation function of the DSP (DigitalSignal Processing) chip is also supported. However, due to differences in transmission distances, the dispersion compensation values ​​corresponding to different tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2513H04B10/2525H04J14/02
CPCH04B10/2513H04B10/25253H04J14/0202H04J14/02H04B10/2525
Inventor 高立东
Owner ZTE CORP
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