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Connecting method and equipment for fiber optic amplifier supporting single fiber bidirectional light transmission

A fiber amplifier, single-fiber bi-directional technology, applied in the direction of optical fiber transmission, transmission system, optical waveguide coupling, etc., can solve the problems of difficult maintenance work, increase the price of optical transmission system, etc., and achieve the effect of simplifying the network structure and reducing costs

Inactive Publication Date: 2003-12-31
HUAWEI TECH CO LTD
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Problems solved by technology

However, the optical fiber amplifier is a relatively expensive and complicated part of the optical transmission system, which greatly increases the price of the entire optical transmission system, and the maintenance work is difficult

Method used

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  • Connecting method and equipment for fiber optic amplifier supporting single fiber bidirectional light transmission
  • Connecting method and equipment for fiber optic amplifier supporting single fiber bidirectional light transmission
  • Connecting method and equipment for fiber optic amplifier supporting single fiber bidirectional light transmission

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Embodiment approach

[0025] One solution of the present invention is to use four comb filters and one unidirectional optical fiber amplifier, two more comb filters are used than the traditional optical large nodes, but one less one-way optical fiber amplifier is used.

[0026] The specific optical path connection is illustrated by using four comb filters as an example, please refer to Figure 4 , while noting and image 3 comparing:

[0027] 1. The eastbound optical signal enters the optical amplification node from the left side of the figure, and first enters through the multiplexing port, passes through the comb filter 1, and is separated from the westbound optical signal. The westward optical signal enters the multiplexing port from the right side of the figure, passes through a comb filter 4, and is separated from the eastward optical signal.

[0028] 2. The west direction optical signal from comb filter 4 demultiplexing port will enter the corresponding demultiplexing port of comb filter 2 ...

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Abstract

The invention provides the linking process and apparatus of the optical fiber amplifier supporting single fiber two way optical transmission characterized by that, optical combining and dividing devices are used to transform the two way transmission optical signal into the one-way transmission optical signal, which is sent to the same optical fiber amplifier for magnification, then the optical combining and dividing devices are used again to divide the one way transmission optical signal, and to be sent to the two directional optical fiber. When the optical signal of the two directions are in different frequency bands, the optical combining and dividing device uses wavelength-division multiplexer. When the optical signal of the two directions are in the same frequency bands, the optical combining and dividing device uses comb filter, the linking modes are the same.

Description

technical field [0001] The invention proposes a novel optical fiber amplifier connection method and device supporting single-fiber bidirectional optical transmission, especially the bidirectional optical amplification problem in single-fiber bidirectional optical transmission realized by using an optical fiber amplifier. This technology is applied in the optical transmission system and can support single-fiber bidirectional optical transmission. Background technique [0002] The optical fiber communication system can effectively utilize the huge bandwidth in the transmission optical fiber, and has been widely used. Bidirectional transmission in the same optical fiber (that is, single-fiber bidirectional) is an effective way to further improve the utilization rate of optical fiber bandwidth, and it has been widely used at present. However, in a single-fiber bidirectional optical transmission system, if a relay node needs optical amplification, two optical fiber amplifiers ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/26H04B10/25H04B10/297
Inventor 易兴文
Owner HUAWEI TECH CO LTD
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