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Method, apparatus and system for detecting serial connection order of components in optical network

A cascading sequence, component-level technology, applied in the field of optical transmission, can solve problems such as increased hardware cost, confusion and complexity of identification sets

Inactive Publication Date: 2011-01-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1. It is necessary to add an FID modulation device for each link span, and the cost is relatively high
[0010] 2. Since a new FID is added to each link span of the main optical channel, for a wavelength-switchable network, the set of identifiers detected by each detection point will be very chaotic and complicated, and may become larger and larger ; If the FID is deleted at the end of each link span, a device for removing the FID needs to be placed at each link span, which will further increase the hardware cost
[0011] 3. The larger the scale of the network, the greater the number of identifications required, which will cause the difficulty of modulation and demodulation, especially for some identifications. If frequency identification is used, the increase in the number of identifications will seriously increase the system implementation. difficulty

Method used

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  • Method, apparatus and system for detecting serial connection order of components in optical network
  • Method, apparatus and system for detecting serial connection order of components in optical network
  • Method, apparatus and system for detecting serial connection order of components in optical network

Examples

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Embodiment 1

[0073] see Figure 7 , the embodiment of the present invention provides a method for detecting the cascading sequence of components in an optical network, which specifically includes the following steps:

[0074] Step 101: Modulating a unique identification signal for each wavelength channel in the optical network;

[0075] Wherein, the identification signal can be a frequency signal, a data signal, a coded signal or a non-coded signal, etc., and a fixed top adjustment depth m is set.

[0076] Step 102: Detect the identification set of the port with the most wavelengths of each component in the optical network, the ratio of all wavelength power sum S to all power sum S' at each component, and the amplitude of the identification in the identification set, wherein, all power and S' is the sum of all wavelength power sum S and all noise power; when the number of wavelengths of the two ports of the component is the same, one of the ports is selected for detection.

[0077] For a...

Embodiment 2

[0096] In this embodiment, optical identification modulation is not performed at the sending end, but a spectrum analysis unit is used to detect the wavelength at each component in the network, see Figure 12 , the embodiment of the present invention also provides a method for detecting the cascading sequence of components in an optical network, which specifically includes the following steps:

[0097] Step 201: the sampling spectrum analysis unit detects the wavelength set of the port with the most wavelengths of each component in the optical network, the amplitude and OSNR (Optical Signal-to-Noise Ratio, optical signal-to-noise ratio) of the wavelength in the wavelength set; when the component When the wavelength sets of the two ports are the same, one of the ports is selected to detect the wavelength set and wavelength amplitude;

[0098] The spectrum analysis unit is an existing technology, and a spectrum analysis unit is added to each component in the optical network to d...

Embodiment 3

[0110] see Figure 13 , the embodiment of the present invention also provides a device for detecting the cascading order of components in an optical network, specifically including:

[0111] (1) a receiving module, configured to receive the identification set at the port with the most wavelengths of all components in the optical network, and receive the ratio of the sum of all wavelength powers at all components to the sum of all powers and the identification amplitude;

[0112] (2) grouping module, for deriving the identification set of the other end according to the identification set of one end of the part received by the receiving module, and grouping all the identification sets obtained, and the identification sets in each group are all the same;

[0113] (3) Analysis module, used to draw the parts cascading order in each group divided by the grouping module according to all identification sets, ratios and identification amplitudes; after obtaining the parts cascading ord...

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PUM

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Abstract

The invention discloses a method, a device and a system for detecting component cascading sequence in an optical network, which belongs to the optical transmission field. The method comprises steps of modulating identification signals for a wavelength channel, detecting an identification collection of a component port having most wavelengths, detecting the ratio of the total of all the wavelengthpower to the total of all power and the identification amplitude at the component, deducing an identification collection at the other end, dividing all the identification collections into groups, obtaining a cascading sequence within groups according to the above information, obtaining a cascading sequence among groups according to whether the same component exists or not, or the method comprisessteps of detecting wavelength collections, the wavelength amplitude and the optical signal to noise ratio, dividing the wavelength collections into groups, and then respectively obtaining a cascadingsequence within groups and a cascading sequence among groups. The device comprises a receiving module, a group module and an analyzing module. The system comprises a modulator, a detecting device andnetwork management equipment or comprises a detecting device and network management equipment. The method, the device and the system of the invention are capable of detecting component cascading sequence in an optical network and identifying all the topological structure of the network, which are simple, fast and easy.

Description

technical field [0001] The invention relates to the field of optical transmission, in particular to a method, device and system for detecting the cascade sequence of components in an optical network. Background technique [0002] With the development of optical transport technology, the optical transport network is developing towards an all-optical configurable network, and the network topology is also developing towards a MESH (mesh) network, and the network scale is becoming larger and larger. The wavelength channel in the all-optical configurable network is transmitted in the all-optical state, see figure 1 , there are three components, OA (Optical Amplifier, Optical Amplifier), OADM (Optical Add / Drop Multiplexer, Optical Add-Drop Multiplexer) and PXC (Photonic Cross-Connects, Optical Crossover), the wavelength channel passes through these three components There is no photoelectric conversion in the transmission process, so the channel information cannot be obtained by e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/08H04B10/20H04B10/07H04L12/24
Inventor 申书强冯志勇李利军吴秋游
Owner HUAWEI TECH CO LTD