Long-distance optical fiber detecting method, apparatus, device and system, and storage medium

A long-distance optical fiber detecting device, comprising:

• two optical time-domain reflectometer OTDR modules disposed at each end of a to-be-detected optical fiber, and a long-distance optical fiber detecting apparatus, wherein:
• in response to a detection request of a target node on the to-be-detected optical fiber, one of the two OTDR modules sends a first optical signal and obtains a first sampling sequence formed by propagating the first optical signal on the to-be-detected optical fiber, or, an other of the two OTDR modules sends a second optical signal and obtains a second sampling sequence formed by propagating on the to-be-detected optical fiber;
• the long-distance optical fiber detecting apparatus includes a response module, a determining module, a generating module, and a sending module, wherein the response module responds to the detection request of the target node on the to-be-detected optical fiber, determines the first sampling sequence and the second sampling sequence formed by respectively propagating the first and second optical signals on the to-be-detected optical fiber;
• the determining module determines a total length of the to-be-detected optical fiber;
• the generating module generates a detection result according to the first sampling sequence, the second sampling sequence and the total length;
• and the sending module sends the detection result to the target node,
• wherein the determining the total length of the to-be-detected optical fiber comprises:
• determining a sending time of a third optical signal recorded by a sending node;
• the third optical signal being used for measuring the to-be-detected optical fiber;
• determining a receiving time of the third optical signal recorded by a receiving node;
• determining a propagation duration of the third optical signal on the to-be-detected optical fiber according to the sending time and the receiving time;
• and
• determining the total length of the to-be-detected optical fiber according to the propagation duration.

A non-transitory computer readable medium comprising a computer program stored thereon that, when executed by a processor, causes a method to be performed, the method comprising:

• in response to a detection request of a target node on a to-be-detected optical fiber, determining a first sampling sequence and a second sampling sequence that are formed by respectively propagating, on the to-be-detected optical fiber, a first optical signal and a second optical signal respectively sent from each end of the to-be-detected optical fiber by an OTDR;
• determining a total length of the to-be-detected optical fiber;
• generating a detection result according to the first sampling sequence, the second sampling sequence, and the total length;
• and
• sending the detection result to the target node,
• wherein the determining the total length of the to-be-detected optical fiber comprises:
• determining a sending time of a third optical signal recorded by a sending node;
• the third optical signal being used for measuring the to-be-detected optical fiber;
• determining a receiving time of the third optical signal recorded by a receiving node;
• determining a propagation duration of the third optical signal on the to-be-detected optical fiber according to the sending time and the receiving time;
• and
• determining the total length of the to-be-detected optical fiber according to the propagation duration.