Spatially resolved chromatic dispersion measurement by abidirectional OTDR technique

摘要

A technique for spatially resolved chromatic dispersionnmeasurement of installed optical fiber links is presented. The method isnbased on the analysis of bidirectional optical time-divisionnreflectometer (OTDR) traces at different wavelengths obtained by anspecifically designed tunable external source. Measurement accuracy isnimproved through a particular algorithm that corrects the OTDRnnonlinearity error. Experimental data on spatially resolved chromaticndispersion of installed dispersion-shifted and nonzero-dispersion fibersnare reported