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System and method of suppressing self-excitation in multi-section shared protection based on optical ring network

A technology of sharing protection and multiplexing sections, applied in the field of optical communication, can solve the problems of reduced operational flexibility, and achieve the effect of low cost and high flexibility

Inactive Publication Date: 2010-05-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method reduces the flexibility of the system to operate

Method used

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  • System and method of suppressing self-excitation in multi-section shared protection based on optical ring network
  • System and method of suppressing self-excitation in multi-section shared protection based on optical ring network
  • System and method of suppressing self-excitation in multi-section shared protection based on optical ring network

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Embodiment Construction

[0027] like image 3 As shown, it is a structural schematic diagram of the self-excited system for avoiding loops according to the embodiment of the present invention, which includes: an amplifying unit 1 composed of a preamplifier 11 and a power amplifier 12; a combined demultiplexing unit 2 composed of a component wave Unit 21 and combined wave unit 22; APS control unit 3; A direction optical switch 4, composed of A direction access optical switch 41 and A direction output optical switch 42; B direction optical switch 5, B direction input optical switch 51 It is composed of a B-direction output optical switch 52 ; an anti-vibration unit 6 ; and a filter 7 .

[0028] For the 32-wave system, the optical signal of the ring network is divided into two groups by combining the demultiplexers 21 and 22, the long-waveband (red band) optical signal and the short-waveband (blue band) optical signal. The clockwise red band light signal channel is reserved to protect the counterclockwi...

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Abstract

This invention provides a system and a method for suppressing self-excitation in an optical ring net multiplex section share protection, in which, the system forms an outer cycle and an inner cycle bya first and a second fibers of adjacent nodes, each cycle includes a working service path and a protection service path and the system includes a switching control unit for controlling signals of thering net to be switched between the working service path and the protection service path, a vibration-resistant unit having vibration-resistant and through states set on the protection service path of the cycle to control the on-off of the protection service path by the switch between the vibration -resistant and through states.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a system and method for suppressing self-excitation in multiplexing section sharing protection based on an optical ring network. Background technique [0002] Dense Wavelength Division Multiplexing (DWDM) is a multiplexing technology that utilizes the characteristic of non-interfering transmission of light waves of different wavelengths in the same optical fiber. In the DWDM optical transmission system, the ring network is a common communication network topology. Compared with other structures, the ring network is easier to implement and manage while maintaining high survivability, so it is widely used in urban optical transmission networks. [0003] The wavelength division multiplex (wavelength division multiplex, WDM) ring network retains the self-healing characteristics of the ring structure and has a variety of protection methods, and it is precisely because of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/12H04L12/42H04B10/20H04J14/02H04B10/275
Inventor 张乃罡魏晓强
Owner ZTE CORP
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