Patent ID: 11901937
Assignee: ACCELINK TECHNOLOGIES CO., LTD.
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 6:
7. 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.