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Method for balancing links performance and device for the same

A technology for link performance and equalization, which is applied in multiplexing system selection devices, selection devices, multiplexing communication, etc., can solve the problem of long adjustment time, achieve rapid adjustment, avoid iterative adjustment, eliminate dependent effect

Active Publication Date: 2014-04-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the adjustment of the previous adjustment point will affect the optical power change of the next adjustment point, each adjustment point can only be adjusted serially. For a complex ring network, the adjustment process will be an iterative process. The adjustment time very long

Method used

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  • Method for balancing links performance and device for the same
  • Method for balancing links performance and device for the same
  • Method for balancing links performance and device for the same

Examples

Experimental program
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Effect test

Embodiment 1

[0028] see figure 1 , this embodiment provides a method for balancing link performance, the method comprising:

[0029] 101: Obtain the link information of any OMS (Optical Multiplexer Section) in the optical wavelength division multiplexing system, and calculate the link information of each wavelength in the optical wavelength division multiplexing section according to the link information of any optical wavelength division multiplexing section. The input power of each optical amplifier in the multiplexing section;

[0030] 102: Calculate the optical signal-to-noise ratio degradation amount of each wavelength according to the input power of each optical amplifier in any optical wavelength division multiplexing section of each wavelength;

[0031] 103: When the difference in the degradation amount of optical signal-to-noise ratio of each wavelength is within the preset threshold range, calculate the output power of the last optical amplifier of each wavelength in any one of t...

Embodiment 2

[0036] see figure 2 , this embodiment provides a method for balancing link performance, the method comprising:

[0037] 201: Obtain link information of any optical wavelength division multiplexing section in the optical wavelength division multiplexing system;

[0038] Wherein, the link information includes: wavelength distribution, link loss, type of optical amplifier, gain of each wavelength of the optical amplifier, and the like.

[0039] In this embodiment, any one optical wavelength division multiplexing section is set as OMS(i). by image 3 For example, image 3 There are 3 power adjustment points in China, namely image 3 For OEQ-A, OEQ-B, and OEQ-C shown in , it is assumed that OMS (i) is between OEQ-A and OEQ-B.

[0040] 202: Calculate the input power of each optical amplifier of each wavelength in the any optical wavelength division multiplexing section according to the link information of the any optical wavelength division multiplexing section;

[0041] Specif...

Embodiment 3

[0066] see Figure 4 , this embodiment provides a device for balancing link performance, the device comprising:

[0067] Input power calculation module 301, is used for obtaining the link information of any optical wavelength division multiplexing section in the optical wavelength division multiplexing system, according to the link information of any optical wavelength division multiplexing section, calculates each wavelength in any optical wavelength division multiplexing section The input power of each optical amplifier in

[0068] The optical signal-to-noise ratio degradation calculation module 302 is used to calculate the optical signal-to-noise ratio degradation of each wavelength according to the input power of each optical amplifier in any optical wavelength division multiplexing section for each wavelength;

[0069] The target power calculation module 303 is used to calculate the output power of the last optical amplifier of each wavelength in any optical wavelength d...

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Abstract

Provided are a method and apparatus for balancing link performance, which relate to the field of optical wavelength division multiplexing. The present invention may compute the target input power spectra, target output power spectra of all OMS segments in a network and the single wave attenuation amount of power adjustment points in parallel based on link information about the OMS segments, may also realize quick adjusting of the complex network topology, and may realize that by one step, thereby avoiding the problem of iterative adjustment resulting from power influence among all power adjustment points during the serial adjustment of a ring network. In addition, optical path opening is not required in a computing stage, and then dependence on the optical path opening is eliminated during the process of balancing link performance.

Description

technical field [0001] The invention relates to the field of optical wavelength division multiplexing, in particular to a method and device for equalizing link performance. Background technique [0002] In WDM (Wavelength Division Multiplexing, wavelength division multiplexing) system, light of different wavelengths is transmitted in the link, due to SRS (Stimulated Raman Scattering, stimulated Raman scattering effect), the optical power of short wavelength will be transferred to long wavelength In addition, due to the unevenness of the gain spectrum and noise index spectrum of the OA (Optical Amplifier, optical amplifier) ​​for each wavelength in the link, and the inconsistency of the loss of the link for each wavelength, the transmit power and OSNR (Optical Signal to Noise Ratio (optical signal-to-noise ratio) The power and OSNR of each wavelength signal with the same wavelength after long-distance transmission will deviate greatly, so that the service performance of each ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J14/02
CPCH04J14/0261H04Q2213/1301H04B10/2935H04J14/0221H04J14/02H04Q11/00H04B10/294H04B10/2931H04Q2213/1308H04J14/02216H04B10/07953H04B10/07955H04B10/564
Inventor 张森冯志勇韩建蕊
Owner HUAWEI TECH CO LTD