Device, method and device for positioning the optical fiber failure

Abstract

The invention discloses a fiber fault location equipment, method and device in the optical receiving network field. The optical time-domain echo wave length selecting module of the equipment comprises the following parts: an optical switch and an array waveguide raster. The method comprises the following steps: detecting the fault of the turn-up channel by the fiber fault location equipment; informing the optical line ending equipment corresponding with the upgoing channel to break the sending of the downgoing data; producing the line diagnostic signal; proceeding with the downgoing sending of the light source modulating the optical line ending equipment; receiving selectively and analyzing the reflected line diagnostic signal by the fiber fault location equipment; reporting the concrete position of the fiber fault to the network administrator according to the analyzed result. The device comprises the following parts: a control module, a modulating module, a sending module and a fiber fault position module. The invention reduces the cost of the fiber fault position system.

Description

technical field [0001] The invention relates to the field of optical access networks, in particular to an optical fiber fault location equipment, method and device. Background technique [0002] Recently, with the continuous emergence of various data services, the demand for broadband access services has increased rapidly. In order to meet these high-bandwidth and large-capacity access needs, an ATM-based passive optical network (APON-ATM Passive Optical Network) has emerged. TDMA-PON ( Time Division Multiple Access-Passive Optical Network (Time Division Multiple Access-Passive Optical Network) network. However, due to the increase in user bandwidth requirements, and the TDMA-PON network is limited by the burst technology and only one transmission wavelength, it is difficult to expand the bandwidth and transmission capacity. To increase the bandwidth, it is necessary to increase the optical wavelength of user data transmission. At present, the WDM-PON-Wavelength Division M...

AI Technical Summary

Problems solved by technology

However, the traditional OTDR measurement method needs to adjust the tunable optical filter to dynamically align the central wavelength of the OTDR with the wavelength of the AWG (Array Waveguide Grating-Array Waveguide Grating) at the remote node in the system under test when locating the fiber fault. , and this alignment operation is very difficult, and at the same time, the price of the tunable optical filter is relatively high, which will inevitably lead to the high application cost of the optical fiber fault location system

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