Method and apparatus for obtaining status information...

H - Electricity – 04 – B

Patent

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H04B 10/08 (2006.01)

Patent

CA 2552711

A method is provided for locating a fault arising in one or more optical amplifiers from among a plurality of optical amplifiers operating in saturation and located along an optical transmission path. The method begins by generating a COTDR trace representing a backscattered and/or reflected optical power level along the transmission path and comparing the COTDR trace to a previously obtained reference COTDR trace to generate a difference trace that represents a change in gain. The change in gain is assigned to at least one of the plurality of optical amplifiers based on the difference trace.

La présente invention concerne un procédé permettant de localiser un défaut survenant dans un ou dans plusieurs amplificateurs optiques parmi une pluralité d'amplificateurs optiques fonctionnant en saturation et situés le long d'un trajet de transmission optique. Ce procédé commence par la génération d'une trace COTDR représentant un niveau de puissance optique rétrodiffusée et/ou réfléchie le long de ce trajet de transmission et par la comparaison de cette trace COTDR avec une trace COTDR de référence obtenue précédemment de façon à générer une trace de différence qui représente un changement de gain. Ce changement de gain est attribué à au moins un des amplificateurs optiques à partir de cette trace de différence.

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