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Line protector for four-fiber bidirectional optical amplification section of WDM optical transmission system

A protection device and optical transmission technology, applied in wavelength division multiplexing systems, optical guides, optics, etc., can solve the problems of limited length of optical transmission lines, limited number of optical channels, low utilization rate of optical channels, etc. Wide service transmission bandwidth and low insertion loss

Inactive Publication Date: 2007-09-05
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a four-fiber bidirectional optical amplification section line protection device for an optical wavelength division multiplexing transmission system, which overcomes the limitation of the network topology, the length of the optical transmission line, and the number of optical channels in the prior art. The problem of low utilization of optical channels

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  • Line protector for four-fiber bidirectional optical amplification section of WDM optical transmission system
  • Line protector for four-fiber bidirectional optical amplification section of WDM optical transmission system
  • Line protector for four-fiber bidirectional optical amplification section of WDM optical transmission system

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Embodiment Construction

[0040] FIG. 1 is a structural diagram of the first four-fiber bidirectional optical amplification section line protection device of the present invention applied to two optical transmission end nodes. In Fig. 1, an end node 1 is connected to another end node 3 through four bidirectional optical fibers 8, 9, 10, 11, wherein the optical fiber 8 is used as a means for transmitting optical signals from the end node 1 to the end node 3 The main optical transmission line, optical fiber 9 is used as a backup optical transmission line for transmitting optical signals from end node 1 to end node 3, and optical fiber 10 is used as a main optical transmission line for transmitting optical signals from end node 3 to end node 1 , the optical fiber 11 is used as a backup optical transmission line for transmitting optical signals from the end node 3 to the end node 1 . Usually, the one with the smaller optical attenuation among the two optical transmission lines in the same direction is sele...

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Abstract

The invention relates to a four fiber two-way light amplifying section line preserver in the light wavelength-division multiplex transmission system, which uses the light transmission line with different path between the two light transmission joints and a light transmission line to preserve the light transmission line of another path; it is suit for each kind of light network structure and can reduce the complication of the light transmission system.

Description

technical field [0001] The invention relates to an optical wavelength division multiplexing (WDM) transmission system, in particular to a four-fiber bidirectional optical amplification section line protection device in the optical wavelength division multiplexing transmission system. Background technique [0002] Optical wavelength division multiplexing (WDM) transmission systems include coarse wavelength division (CWDM), dense wavelength division (DWDM), optical add / drop multiplexing (OADM) and optical crossover (OXC) transmission systems. Wherein, the signal of the optical wavelength division multiplexing (WDM) equipment is transmitted through the optical fiber. Because the transmission signal has a response, it is generally completed by two optical fibers that transmit in opposite directions. In the wavelength division transmission system, especially in the long-distance optical transmission system, due to the complexity of the optical fiber routing, the breakage phenomen...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00H04J14/02
Inventor 雷非吴珊
Owner FENGHUO COMM SCI & TECH CO LTD