Fault detection method and apparatus of optical distribution network and opticla network system

An optical distribution network and fault detection technology, applied in the field of optical networks, can solve problems such as optical fiber faults, achieve accurate detection and positioning, and improve stability
CN102356571AActive Publication Date: 2012-02-15HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2012-02-15

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Abstract

The invention provides a fault detection method and an apparatus of an optical distribution network and an opticla network system. At least one optical identification device is respectively arranged on a main opticla fiber and branch opticla fibers; the optical identification device carries out unique identfification on the main optical fiber and the branch optical fibers through address codes; after an optical signal for detection use is sent to the optical distribution network, the optical signal returned by the optical identification devices in the optical distribution network is received, analyzed and processed; the address codes of the optical identification devices are obtained; according to the obtained address codes of the optical identification devices, faults of the optical fibers corresponding to the address codes are detected; the problem that OTDR can not precisely detect whether the branch optical fibers behind an opticla splitter have faults in the prior arts is solved; rapid and accurate detection and location of the fault of the optical distribution network are realized; and the stability of a passive optical network PON system is increased.
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Description

technical field

[0001] The present invention relates to the field of optical network technology, more specifically, to a fault detection method and device for an optical distribution network and an optical network system. Background technique

[0002] With the development of broadband technology, passive optical network (Passive Optical Network, PON) technology is currently one of the most widely used Fiber To The Home (Fiber To The Home, FTTH) technologies. As the PON network is used more and more frequently, the technology for detecting whether the PON network fails is also becoming more and more important. At present, an Optical Time Domain Reflectometer (OTDR) is a main means for detecting optical path performance and locating optical path faults. When using OTDR to detect PON network online, OTDR uses the wavelength of 1625nm / 1650nm, avoiding the working wavelength of PON network. The OTDR is connected to the ODN network at the OLT side through the wavelength division...

Claims

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