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

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.

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...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a fault detection method, device and optical network system of an optical distribution network, which are used to solve the problem in the prior art that the OTDR cannot accurately detect whether each branch optical fiber is faulty after the optical splitter, thereby It realizes fast and accurate detection and location of faults in the optical distribution network, and improves the stability of the passive optical network PON system

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