LIFE-CYCLE MANAGEMENT OF FAULTS OCCURING ON OPTICAL FIBRES

摘要

According to the invention, a device (46) is provided for keeping track of life-cycles of faults occurring in an optical fibre. The device comprises a first detector (21) configured to detect (1) from received signal power (5) first fault parameters (7) related to an occurrence of a first fault on this optical fibre. It further comprises a database (23) configured to store (6) the first fault parameters and a second detector (22) configured to detect (26) from the received signal power (5) second fault parameters (12) related to a restoration of a second fault on the optical fibre. It also comprises a comparator (24) configured to compare (13) the second fault parameters (12) with the stored fault parameters (25) and to decide that the fault is resolved if the first fault parameters (7) most closely match the second fault parameters (12).