Automatic Identification Method of Optical Fiber Signal Transmission Faults

Abstract

The invention discloses a fiber signal transmission fault automatic identification method. An optical transmitter and receiver comprises a Serdes chip and a logic processing chip; the logic processing chip detects a Serdes chip state pin output end and determines whether the optical transmitter and receiver works normally; the Serdes chip state pin output end is provided with a level difference value amplification unit circuit; the logic processing chip detects the output level of the level difference value amplification unit circuit; if the level difference value amplification unit circuit outputs low level, a timer performs timing, and if timing exceeds a preset time, it is determined that a fiber link fault occurs; and if the level difference value amplification unit circuit outputs high level, the timer performs timing, and if timing exceeds a preset time, it is determined that an optical transmitter and receiver power supply fault occurs. By using the fiber signal transmission fault automatic identification method, whether a fault occurring point is an optical transmitter and receiver power supply fault or a fiber link fault can be determined in an intelligentized mode so that the construction period of a fiber system or an optical cable system can be effectively shortened, and the equipment debugging and maintenance cost can be reduced.

Description

technical field [0001] The invention relates to the fields of optical communication and optical transmission, in particular to an automatic identification method for optical fiber signal transmission faults. Background technique [0002] An optical transceiver is an electronic transmission device that uses the principles of electro-optical conversion and photoelectric conversion to transmit signals over long distances through optical cables. Its main function is to convert various electrical signals (video signals, audio signals, control signals, and switching signals) into optical signals, and then restore them to electrical signal output after long-distance transmission through optical fibers or optical cables. As a long-distance transmission device, it uses cheap optical fiber or optical cable instead of cables, which not only has good signal quality, strong anti-interference, but also greatly reduces transmission costs. [0003] With the rapid development of optical com...

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Problems solved by technology

[0003] With the rapid development of optical communication technology, optical fiber or optical cable long-distance transmission technology has become very mature. Judging the fault and automatically judging the cause of the fault will effectively reduce the cost of construction, commissioning and maintenance

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