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Fault localization method and fault localization device in a passive optical network, and passive optical network having the fault localization device

A fault location and passive network technology, applied in the direction of testing optical fiber/optical waveguide equipment, detecting backscattered light in the time domain, optical fiber transmission, etc., can solve the problem of no compatibility, low economic efficiency, and complex systems and other issues, to achieve the effect of high reliability and stability

Inactive Publication Date: 2011-09-07
KOREA ADVANCED INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the fault detection method used in TMD-PON complicates the whole system and has low economic efficiency and no compatibility

Method used

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  • Fault localization method and fault localization device in a passive optical network, and passive optical network having the fault localization device
  • Fault localization method and fault localization device in a passive optical network, and passive optical network having the fault localization device
  • Fault localization method and fault localization device in a passive optical network, and passive optical network having the fault localization device

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Embodiment Construction

[0027] Hereinafter, the present invention will be described in more detail with reference to embodiments of the invention and accompanying drawings.

[0028] figure 1 A diagram illustrating a fault location method and a fault location device in a PON according to an embodiment of the present invention is shown.

[0029] see figure 1 , a fault location method and a fault location device in a PON according to an embodiment of the present invention show a method and a device, which pass from a remote location only when needed when the PON is generally operated as a passive network Temporarily supplying power to selectively configure an optical path of the remote node, and inserting a monitoring signal through the selectively configured optical path to detect a failure occurring on the selectively configured optical path.

[0030] Specifically, it shows a fault location method and a fault location device according to the present invention, as well as a PON configuration with the...

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Abstract

Disclosed are a fault localization method and a fault localization device in a passive optical network (PON), and a passive optical network having the fault localization device. The fault localization method in a passive optical network (PON) of the present invention comprises: a) a step wherein said PON operates as a passive network at all times, and receives power temporarily if needed, thereby optionally configuring the optical path of a remote node (RN); and (b) a step wherein the monitoring signal of an OTDR device located in a central office (CO) is made incident via said optical path that is optionally configured, thereby localizing a fault that takes place on said optical path that has been optionally configured.

Description

technical field [0001] The invention relates to a fault location method and a fault location device in a passive optical network (PON), and a PON with the fault location device. More specifically, the present invention relates to a fault location method and a fault location device in a PON and a PON having the fault location device, the PON selectively configures the optical path of a specific distribution fiber through remote control and utilizes a fault detection device of the fiber through selective configuration A typical example of the optical fiber fault detection device is an optical time domain reflectometer (hereinafter referred to as "OTDR"). Background technique [0002] In order to improve the reliability of the PON adapting to the sharply increased bandwidth demand, it is necessary to monitor a fault occurring on the PON and quickly detect and eliminate the fault when it occurs. It is hoped that the PON including only passive components from the switching cente...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/08H04B10/071H04B10/077
CPCH04B10/071H04B10/0771G01M11/3136H04B10/2581
Inventor 李昌熹李宗训崔技万文实球文贞亨李焄根金埈煐吴尚珉
Owner KOREA ADVANCED INST OF SCI & TECH