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Characterization of an Optical Time Domain Reflectometer Calibrator



Donald R. Larson, Nicholas Paulter, Kenneth C. Blaney


We report the results of an investigation into the signal characteristics and behavior of an instrument used by the US Air Force Metrology and Calibration Program to calibrate optical time domain reflectometers. The instrument is calibrated using NIST calibrated optical fiber spools of approximately 1, 2, and 4 km lengths. Calibration results performed at various US Air Force Precision Measurement Equipment Laboratories have indicated some anomalous distances or pulse delays, and NIST efforts were focused on identifying the cause and suggesting a correction for this anomalous behavior.
Technical Note (NIST TN) - 1475
Report Number


calibration, delay, optical fiber, optical time domain reflectometer, uncertainty


Larson, D. , Paulter, N. and Blaney, K. (2006), Characterization of an Optical Time Domain Reflectometer Calibrator, Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD, [online],, (Accessed April 17, 2024)
Created March 31, 2006, Updated October 12, 2021