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Device and method for monitoring failures of time division multiplexing optical network link

A technology of network link and multiplexed light, applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve the problems of low spatial resolution, small dynamic range, low sensitivity, etc., and achieve low spatial resolution and precision. The effect of improving and improving the sensitivity

Active Publication Date: 2014-12-10
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to solve the problems of low spatial resolution, complex structure, low sensitivity and small dynamic range of the existing time-division multiplexing passive optical network fault monitoring technology, the present invention provides a device and method for monitoring time-division multiplexing optical network link faults

Method used

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  • Device and method for monitoring failures of time division multiplexing optical network link
  • Device and method for monitoring failures of time division multiplexing optical network link
  • Device and method for monitoring failures of time division multiplexing optical network link

Examples

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Embodiment 1

[0045] A device for monitoring link failures of a time-division multiplexing optical network, including a time-division multiplexing optical network and a monitoring device;

[0046] The time-division multiplexing optical network includes an optical terminal, a feeder optical fiber, an optical splitter of n channels, n branch optical fibers, and n optical network units; the optical terminal is connected to the common port of the optical splitter through the feeder optical fiber; the n optical splitters The splitting port is connected one by one to the incident end faces of n optical network units through n branch optical fibers;

[0047] The monitoring device includes a semiconductor laser without an isolator, a coupler, an optical coupling device, a photodetector, a signal acquisition and processing device, and n optical feedback devices; the semiconductor laser without an isolator is connected to the coupler; the large ratio of the coupler The output end is connected to the ...

Embodiment 2

[0058] A device for monitoring link failures of a time-division multiplexing optical network, including a time-division multiplexing optical network and a monitoring device;

[0059] The time-division multiplexing optical network includes an optical terminal, a feeder optical fiber, an optical splitter of n channels, n branch optical fibers, and n optical network units; the optical terminal is connected to the common port of the optical splitter through the feeder optical fiber; the n optical splitters The splitting port is connected one by one to the incident end faces of n optical network units through n branch optical fibers;

[0060] The monitoring device includes a semiconductor laser without an isolator, a coupler, an optical coupling device, a photodetector, a signal acquisition and processing device, and n optical feedback devices; the semiconductor laser without an isolator is connected to the coupler; the large ratio of the coupler The output end is connected to the in...

Embodiment 3

[0071] A device for monitoring link failures of a time-division multiplexing optical network, including a time-division multiplexing optical network and a monitoring device;

[0072] The time-division multiplexing optical network includes an optical terminal, a feeder optical fiber, an optical splitter of n channels, n branch optical fibers, and n optical network units; the optical terminal is connected to the common port of the optical splitter through the feeder optical fiber; the n optical splitters The splitting port is connected one by one to the incident end faces of n optical network units through n branch optical fibers;

[0073] The monitoring device includes a semiconductor laser without an isolator, a coupler, an optical coupling device, a photodetector, a signal acquisition and processing device, and n optical feedback devices; the semiconductor laser without an isolator is connected to the coupler; the large ratio of the coupler The output end is connected to the ...

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Abstract

The invention relates to an optical fiber communication network failure monitoring technology, in particular to a device and a method for monitoring failures of a time division multiplexing optical network link, and solves the problems that the present time division multiplexing passive optical network failure monitoring technology is low in spatial resolution, complicated in structure, low in sensitivity and small in dynamic range. The device comprises a time division multiplexing optical network and a monitoring device, wherein the time division multiplexing optical network comprises an optical line terminal, a feeder fiber, an n-branch optical splitter, n branch fibers and n optical network units; the monitoring device comprises an isolator-free semiconductor laser, a coupler, an optical coupling device, a photoelectric detector, a signal acquisition and treatment device and n optical feedback devices. The semiconductor laser is connected with the coupler, and the large-scale output terminal of the coupler is connected with the input terminal of the optical coupling device. The device is suitable for monitoring failures of a time division multiplexing passive optical network.

Description

technical field [0001] The invention relates to an optical fiber communication network fault monitoring technology, in particular to a device and method for monitoring a time division multiplexing optical network link fault. Background technique [0002] At present, the optical fiber communication network has rapidly developed from the intercity backbone network to the household optical fiber access network. In various home fiber access networks, the passive optical network (PON, Passive Optical Network) that combines wavelength division multiplexing (WDM, Wavelength Division Multiplexing) and time division multiplexing (TDM, Time Division Multiplexing) technology is the realization The best access solution for high-speed, large-capacity communications. Therefore, timely and accurate diagnosis of PON faults is of great significance to guarantee communication and digital services. Optical Time Domain Reflectometry (OTDR, Optical Time Domain Reflectometry) is currently the m...

Claims

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Application Information

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IPC IPC(8): H04B10/071
Inventor 赵彤王安帮张明江王冰洁王云才
Owner TAIYUAN UNIV OF TECH
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