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Multimode Fiber Launch Study: Estimating the Impact on Measurements of Delay



Tasshi Dennis


The purpose of this study was to evaluate measurement uncertainties introduced into time delay calibrations of multimode fiber reference spools. While the principles described are generally applicable, the results could be different for other types of available multimode fiber and should be evaluated on an individual basis. The study was conducted by use of a high-accuracy NIST technique for measuring delay, and again the results obtained could be different, and with higher uncertainty, for more conventional measurement methods. The results of this study are presented, along with suggested guidance and areas for future study.
Technical Note (NIST TN) -


Multimode Fiber, Time Delay, OTDR, Optical Fiber, Calibration, Uncertainty Analysis


Dennis, T. (2010), Multimode Fiber Launch Study: Estimating the Impact on Measurements of Delay, Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD (Accessed April 20, 2024)
Created August 1, 2010, Updated February 19, 2017