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Method and circuit for detecting fault of improper continuous radiation of optical module

A fault detection circuit and fault detection technology, applied in the field of optical communication, can solve the problems of user inconvenience, increase fault processing time and maintenance cost of the bureau, and achieve the effect of avoiding adverse effects

Active Publication Date: 2011-10-26
SOURCE PHOTONICS CHENGDU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This greatly increases the fault handling time and the maintenance cost of the bureau. For users who have not failed their own equipment in the same star network, they have to wait for the faulty equipment to be repaired before they can use their own equipment, which causes great inconvenience to users.

Method used

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  • Method and circuit for detecting fault of improper continuous radiation of optical module
  • Method and circuit for detecting fault of improper continuous radiation of optical module
  • Method and circuit for detecting fault of improper continuous radiation of optical module

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Embodiment Construction

[0029] The method for detecting abnormal continuous light-emitting faults of optical modules of the present invention includes the following steps:

[0030] a. Detect the luminous state of the laser, if the duration is too long, go to step b;

[0031] b. Put the light-emitting control drive signal of the laser in the "-" state, that is, by applying a signal to turn off the light-emitting signal to the laser control terminal, and then detect the light-emitting state of the laser; if it lights up, it indicates that the fault lies in the light-emitting circuit; if it does not light up, enter the step c;

[0032] c. Turn off the input enabling signal of the first control circuit, and then detect the output state of the first control circuit; if the first control circuit outputs a "+" signal, it indicates that the fault lies in the first control circuit 1; if the first control circuit outputs "- ” signal, indicating that there is no fault.

[0033] The input signal of the first c...

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Abstract

The invention includes following steps: (1) detecting glowing state of laser, if glowing duration is overlength, then entering into step (2); (2) setting up drive signal of controlling laser glowing to '-'state, then testing glowing state of laser again; if laser glows, then it indicates that the glowing circuit is in fault; if laser does not glow, then entering into step (3); (3) closing up the input enable signal of first control circuit, then testing state of output of the first control circuit; if the first control circuit outputs '+'signal, then it indicates that the first control circuit is in fault; if the first control circuit outputs '-'signal, it indicates there is no fault. Useful effects of the invention are: testing failure reason of non-normal continuous glowing precisely, and preventing harmful effect on system caused by fault module.

Description

technical field [0001] The invention relates to the optical communication technology, in particular to the fault detection technology of the communication unit in the optical communication. Background technique [0002] At present, there is a system for transmitting data, voice and video services in a point-to-multipoint network topology such as PON in the market. It consists of the following parts: [0003] The central office equipment OLT completes the aggregation and uplink of remote equipment data; the remote optical network unit ONU or optical network terminal ONT completes the access of various user services to the PON network; [0004] Optical distribution network, including optical fibers and optical splitters connecting central office equipment and remote equipment. When the optical module of a certain optical network unit or optical network terminal in the star topology network suddenly emits light continuously abnormally, other optical network units or optical ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00H04B10/12H04B10/075H04B17/10
Inventor 王健王志波张超
Owner SOURCE PHOTONICS CHENGDU