Abstract
In this work a theoretical and experimental thermal behaviour study ofoptical fibres with a high-purity SiO2 core transporting concentratedradiative energy is carried out. A theoretical unidimensional model for thesimultaneous transport of heat by conduction and radiation in opticalfibres, including the heat losses by convection at the surface, isdeveloped. This model considers a constant linear absorption coefficient andit is solved analytically. An experimental method to determine the linearcoefficient of absorption is developed. The time evolution of the axialtemperature distribution of two kinds of fibres is recorded and comparedwith the theoretical predictions. These experimental results validate thetheoretical model proposed.
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