Multiple-acquisition otdr method and device

摘要

An OTDR device and method for characterizing one or more events in an optical fiber link are provided. A plurality of light acquisitions is performed. For each light acquisition, test light pulses are propagated in the optical fiber link and the corresponding return light signals from the optical fiber link are detected. The light acquisitions are performed under different acquisition conditions, for example using different pulsewidths or wavelengths. Parameters characterizing the event are derived using the detected return signal from at least two of the plurality of light acquisitions.

主权项

1. An OTDR method for characterizing an event in an optical fiber link, comprising the steps of:
a) performing a plurality of light acquisitions, each light acquisition comprising propagating at least one test light pulse in the optical fiber link and detecting a return light signal from said optical fiber link for each of said at least one test light pulse, said light acquisitions being performed under different acquisition conditions wherein the corresponding test light pulses have at least one of different pulsewidths and different wavelengths; b) deriving at least one parameter characterizing said event using the detected return signals from at least two of the plurality of light acquisitions, said deriving comprising computing a value for a target parameter from said at least one parameter by combining information from more than one of the light acquisitions.