Device and method for positioning branch fault in passive optical access network

A technology for access network and fault location, applied in data exchange network, electromagnetic network arrangement, digital transmission system, etc., can solve the problems of difficult maintenance, inability to distinguish branches, increase maintenance costs, etc., to support the splitting ratio, reduce The effect of difficult maintenance and convenient operation

Active Publication Date: 2016-05-11
WUHAN POST & TELECOMM RES INST CO LTD
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a PON network with huge branches, what the OTDR receives is the signal after the r

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for positioning branch fault in passive optical access network
  • Device and method for positioning branch fault in passive optical access network
  • Device and method for positioning branch fault in passive optical access network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0035] like figure 1 As shown, the device for branch fault location in the passive optical access network of the present invention includes monitoring modules 1, 1: N splitters / combiners 2 and N wavelength-related reflective element cascade structures 3; monitoring module 1 It also includes a dual light source module 11 , a coupling module 12 , a light receiving module 13 and a data processing module 14 . The dual light source module 11 is used to emit two different wavelengths of probe light; the coupling module 12 is connected to the 1:N splitter / combiner 2 through the optical fiber trunk 4 for link connection; N reflective elements cascaded structure 3 are respectively set on each branch to reflect the detection light on the branch; 1: N splitter / combiner 2 has two functions, one is to divide the detection light into multiple paths on aver...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a device and a method for positioning a branch fault in a passive optical access network, and relates to the field of optical fiber communication technology. The device comprises a double optical source module, a 1:N splitter/combiner and N reflective element cascade structures with relevant wavelengths; the double optical source module transmits wavelength probe light into each branch; the probe light is reflected by a reflective element, and a peak graph of reflection peaks of each branch is obtained by the 1:N splitter/combiner, a coupling module, an optical receiving module and a data processing module; the double optical source module transmits another wavelength probe light to obtain the peak graph of the reflection peaks of another group of branches; and the two results are respectively compared with a peak graph in the case of no fault, and the faulty branch is determined according to the distance between the two reflection peaks having the same peak variation amplitude. The device provided by the invention can quickly identify each branch fault in the passive optical access network and realize distance measurement, thereby reducing the maintenance difficulty and lowering the maintenance cost.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a device and a method for locating branch faults in a passive optical access network. Background technique [0002] Passive Optical Network (PON, Passive Optical Network) has low cost, simple maintenance, easy expansion and upgrade, making it a mainstream technology in the access network. With the further commercialization of fiber-to-the-home, the number of laid optical fibers is increasing, the coverage area is wider and wider, and the business volume carried is also increasing. To create a low-cost, large-capacity, and high-reliability passive optical fiber Internet is necessary. [0003] The distribution network of PON is composed of many passive devices, which are susceptible to failure due to the influence of the external environment. At the same time, the branches in PON are huge. If the fault branch cannot be judged in time and accurately, it will not...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L12/24H04B10/27
CPCH04B10/27H04L41/0677
Inventor 李蔚袁誉星余少华
Owner WUHAN POST & TELECOMM RES INST CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap