Self-recovery method of disabled transmitting terminal of optical module during OTDR test

Abstract

The invention discloses a self-recovery method of a disabled transmitting terminal of an optical module during an OTDR test, aiming at providing an application that the transmitting terminal of the optical module during the OTDR test performs self-recovery after turning off of a laser because of self protection. The technical scheme of the self-recovery method of a disabled transmitting terminal of an optical module during an OTDR test is implemented through the following steps: setting a micro control unit MCU with self-recovery program software in an optical module, polling the working state of the optical module, and judging whether the displayed fault number of a Fault counter is less than 3 when the self-recovery program software detects that a Fault state occurs in the optical module; if so, automatically entering the interruption program, wherein an MCUI / O interface generates a high level trigger signal and sends the high level trigger signal to a driver chip; at the same time, adding 1 to the displayed fault number of the Fault counter, and recovering the transmitting terminal of the optical module to enable the transmitting terminal to work normally; and if the displayed fault number of the Fault counter is greater than 3, not entering the interruption program, and continuously executing the main program. The self-recovery method of a disabled transmitting terminal of an optical module during an OTDR test utilizes the self-recovery function of the optical module to clear the accidental fault state, so that normal usage of the optical module is not influenced and the later maintenance cost for a system operator and an optical module manufacturer is reduced.

Description

technical field [0001] The invention relates to a self-recovery method for a transmitting end of an optical module in the field of optical communication networks when the conventional optical time domain reflectometer (OTDR) test is performed. Background technique [0002] Optical cable is the main medium for transmitting information in modern wired communication. The stability and reliability of optical fiber work become the key to the normal operation of optical communication network. With the development of the times, the society's demand for data transmission is advancing by leaps and bounds. The current hardware equipment can no longer meet the demand for data volume, so it is required to continuously lay hardware facilities to meet the increasing demand. As the optical communication network becomes larger and larger, it is inevitable that the optical fiber will be broken during use. The broken optical fiber will first be reflected on the client, the network will be int...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a self-recovery method for the transmitting end to solve the above-mentioned problem that the optical module will fail due to too strong received light in the OTDR test

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