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DWDM optical channel identification monitoring method and system based on frequency domain perturbation optical label

A monitoring system and optical label technology, applied in the field of optical communication, can solve the problems of rising system complexity, high cost, sharp increase in network capacity, etc., and achieve the effect of reducing cost and complexity, and reducing system cost and complexity.

Active Publication Date: 2020-08-07
WUHAN POST & TELECOMM RES INST CO LTD
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AI Technical Summary

Problems solved by technology

Traditional optical network nodes need to restore the optical-electrical-optical signal of each channel, so all channel information and parameters can be extracted synchronously when each channel is individually demodulated, which is costly and complex
As the backbone network enters the era of coherent detection, the network capacity increases sharply, the cost of devices, and the complexity of the system increase significantly, and traditional technical methods can no longer meet the demand

Method used

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  • DWDM optical channel identification monitoring method and system based on frequency domain perturbation optical label
  • DWDM optical channel identification monitoring method and system based on frequency domain perturbation optical label
  • DWDM optical channel identification monitoring method and system based on frequency domain perturbation optical label

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Embodiment Construction

[0062] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0063] An embodiment of the present invention provides a DWDM optical channel identification and monitoring method based on frequency domain perturbation optical labels, including the following steps:

[0064] At the transmitting end of the DWDM system in multiple transmission directions, a group of sine wave electrical signals with equal frequency intervals are used to form a low-frequency perturbation signal, and the low-frequency perturbation signal is respectively loaded on the optical signal of each DWDM channel in multiple transmission directions Carry out modulation, and send the modulated optical signal into the optical fiber link for transmission;

[0065] When the optical signals of multiple DWDM channels in multiple transmission directions enter an optical network node, the optical signals in multiple transmission directions in the o...

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Abstract

The invention discloses a DWDM optical channel identification monitoring method and system based on a frequency domain perturbation optical label, relates to the technical field of optical communication. Only one group of receiving devices is required in one transmission direction so as to greatly reduce the cost and complexity of future optical network nodes. According to the invention, the DWDMoptical channel signal does not need to be demodulated at the optical network node, only spectral analysis needs to be carried out on the label signal, any effective information does not need to be loaded on the label signal, and meanwhile, the label signal does not need to be demodulated at the node, so that a complex DSP algorithm is avoided, and the system cost and complexity are reduced.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a DWDM optical channel identification and monitoring method and system based on frequency domain perturbation optical tags. Background technique [0002] With the rapid development of the Internet, cloud computing, mobile broadband, and data centers, the demand for network transmission bandwidth has shown explosive growth, driving the development of ultra-large-capacity optical transmission systems. In order to increase the capacity of the existing optical transmission system, key technologies such as wavelength division multiplexing technology, digital coherent reception, and low-noise optical amplification are considered to be effective solutions to increase capacity. Since the introduction of wavelength division multiplexing technology into the field of optical fiber communication in the late 1980s, the single-fiber transmission capacity of single-mode optical fi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J14/02H04Q11/00
CPCH04J14/0202H04J14/0272H04J14/0258H04Q11/0062H04Q2011/0079H04Q2011/0083
Inventor 罗鸣李响贺志学杨超
Owner WUHAN POST & TELECOMM RES INST CO LTD
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