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Method and device for realizing wavelength division multiplexing optical signal branching

A technology of signal splitting and wavelength division multiplexer, applied in the field of optical transmission, can solve the problems of increasing delay, power consumption, and high cost

Active Publication Date: 2020-07-21
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the second application scenario, that is, the lack of optical fiber resources but the power supply conditions, the active switching solution is adopted, such as: sliced ​​packet network, on the one hand, the cost is high, mainly reflected in the remote active switching equipment
On the other hand, active switching equipment needs to parse / package AAU signals, which increases delay and power consumption

Method used

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  • Method and device for realizing wavelength division multiplexing optical signal branching
  • Method and device for realizing wavelength division multiplexing optical signal branching
  • Method and device for realizing wavelength division multiplexing optical signal branching

Examples

Experimental program
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Effect test

Embodiment 1

[0063] see figure 1 As shown, this embodiment provides a method for realizing wavelength division multiplexing optical signal branching, the method includes the following steps:

[0064] At the remote node, the wavelength division multiplexing optical signal is demultiplexed to obtain multiple AAU signals with specific wavelengths for demultiplexing;

[0065] Perform photoelectric conversion and electro-optical conversion on each AAU signal of a specific wavelength in turn to obtain multiple regenerated AAU signals within the preset wavelength range, wherein the number of different wavelengths corresponding to the multiple regenerated AAU signals is less than that of multiple AAUs with specific wavelengths The number of different wavelengths corresponding to the signal, and the multiple regenerated AAU signals are sent to each AAU device.

[0066] Specifically, for the downlink direction, the wavelength division multiplexed optical signal in this embodiment is obtained by mul...

Embodiment 2

[0070] As a better implementation, on the basis of Embodiment 1, the wavelength division multiplexing optical signal is demultiplexed to obtain multiple AAU signals of specific wavelengths. The specific steps are:

[0071] The wavelength division multiplexer is used to demultiplex the wavelength division multiplexed optical signal, and the wavelength division multiplexer adopts an arrayed waveguide grating AWG supporting the first band channel and the second band channel, and the wavelength division multiplexer includes A multiplexing port and a plurality of demultiplexing ports, each of which corresponds to a first band channel and a second band channel;

[0072] The wavelength division multiplexing optical signal of the central office is received through the multiplexing port, and the wavelength division multiplexing optical signal is demultiplexed to obtain multiple AAU signals with the wavelength of the first band or the second band, and the demultiplexing is realized throu...

Embodiment 3

[0086] As a better implementation mode, on the basis of Embodiment 2, when performing photoelectric conversion and electro-optical conversion on the AAU signal of each specific wavelength in sequence, the mode switching module is used between the DWDM optical module and the client-side optical module. , to perform signal input and output, and the working modes of the mode switching module include a transparent transmission mode and a signal shaping mode.

[0087] see image 3 As shown, when the mode switching module is in the transparent transmission mode, the digital signal output port of the DWDM optical module is directly connected to the digital signal input port of the client-side optical module through a high-speed data line; the digital signal input port of the DWDM optical module The port is directly connected to the digital signal output port of the client-side optical module through a high-speed data cable.

[0088] see Figure 4 As shown, when the mode switching m...

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Abstract

The invention discloses a method and device for realizing wavelength division multiplexing optical signal branching, and relates to the field of optical transmission technology. AAU signals with a specific wavelength are split. Perform photoelectric conversion and electro-optical conversion on each AAU signal of a specific wavelength in turn to obtain multiple regenerated AAU signals within the preset wavelength range, wherein the number of different wavelengths corresponding to the multiple regenerated AAU signals is less than that of multiple AAUs with specific wavelengths The number of different wavelengths corresponding to the signal, and the multiple regenerated AAU signals are sent to each AAU device. The present invention does not need to analyze / package the wavelength division multiplexing optical signal, and has low delay, and the AAU device can avoid using an optical module with adjustable wavelength to support the transmission of the wavelength division multiplexing optical signal.

Description

technical field [0001] The invention relates to the technical field of optical transmission, in particular to a method and device for realizing wavelength division multiplexing optical signal branching. Background technique [0002] With the continuous development of Internet applications, such as: big data, cloud computing, high-definition video, etc., the evolution of optical networks has entered the 5G era. The main characteristics of the services to be provided by the 5G network include large bandwidth, low latency, and massive connections, which put forward higher requirements for the bandwidth, capacity, latency, and networking flexibility of the bearer network, especially the mobile fronthaul network. Among them, the mobile fronthaul network is responsible for connecting the active antenna unit (AAU, active antenna unit) and the distributed unit (DU, distributed unit). Source WDM. [0003] The optical fiber direct connection solution directly connects the DU and AAU...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02H04Q11/00G02B6/293G02B6/12
CPCG02B6/12009G02B6/29316H04J14/02H04Q11/0062H04Q2011/0079
Inventor 胡荣王素椅王志军
Owner FENGHUO COMM SCI & TECH CO LTD