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Statistical model for the validation of unidirectional OTDR splice loss measurements

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6 Author(s)
Colton, A.L. ; Lucid Training Centre, Lucid Opt. Services Ltd., Sedbergh ; Beech, C. ; Colton, J.R. ; Frost, P.
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A mathematical model is developed along with an associated software tool which, for two given fibre types and a given one-way optical time domain reflectometer splice loss result, evaluates the probability of the splice being within a set specification. The model includes both mode field diameter (MFD) mismatch splice loss, difference in backscatter levels due to MFD and refractive index (RI) differences for each fibre, and also takes into account the statistical variation of MFD and RI. The mathematical assumptions are validated against Monte Carlo simulations, and the mathematical model against a data set of bi-directional splice loss measurements from 1638 splices between seven fibre types with MFDs ranging from 5.98 to 11.8 mum. Practically, the model is implemented as a stand-alone software package featuring a user-friendly interface

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Optoelectronics, IEE Proceedings  (Volume:153 ,  Issue: 5 )