Common faults in optical fiber lines

Update:27-07-2019
Summary:

Common faults in fiber optic lines are as follows:      […]

Common faults in fiber optic lines are as follows:
       (1) All communication is interrupted
In-station phenomenon: The transmission station receives the “no light” alarm, and the upstream station has no “no light” alarm.
Possible reasons are: the fiber optic cable is cut, broken or broken by the external force; the power supply system of the relay station is interrupted.
(2) Individual system communication interruption
In-station phenomenon: The transmission station receives the “no light” alarm, and the upstream station has no “no light” alarm.
Possible reasons for the line are: the cable is damaged by external force, the fiber is broken, and the original connection point is broken.
(3) The quality of communication in individual systems is degraded
In-station phenomenon: There is no “no light” or no “no light” alarm, but an “error” alarm occurs.
The possible reasons for the optical fiber line are: during the deployment and connection of the optical cable, the damage of the optical fiber causes the line to be lost when the line is lost; the movable connector is not inserted, or there is slight pollution, or other reasons cause the adaptation time Bad; the performance of the fiber is not good, its dispersion and loss characteristics are affected by environmental factors; the fiber is subjected to side stress and the whole process is increased; the mouse termite damages the cable; the cable connector box enters the water; the fiber is at some special point (such as the connector) The fiber in the box is broken, but it has not been broken.