Fictive temperature in silica-based glasses and its application to optical fiber manufacturing

Progress in Materials Science (Impact Factor: 27.42). 01/2012; 57(1):63-94. DOI: 10.1016/j.pmatsci.2011.05.002


This paper will thus give an overview of methods to reduce efficiently the Rayleigh scattering loss via the fictive temperature in silica-based optical fibers. We will first recall what the concept of fictive temperature Tf is and its limitations in section 2. We will see that both Raman and IR spectroscopy can be used to determine Tf (Section 3). Section 4 will thus give some examples of Tf profiles measured in optical fibers manufactured in different conditions. Finally, section 5 will present the main approaches to reduce Rayleigh scattering loss in silica-based fibers via a reduction of Tf.

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Available from: Matthieu Lancry, Oct 10, 2014
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    • "Il s'agit d'une étape importante dans le procédé de fabrication car les conditions d'étirage influencent les propriétés finales de la fibre optique (profil d'indice de réfraction, contraintes résiduelles…). Expérimentalement, les modifications apportées par cette étape se manifestent par une altération du profil de température fictive[1], traduisant une modification de la structure du verre à l'échelle nanométrique. De nombreuses études, expérimentales ou par simulation, traitent des verres de silice pure à température ambiante et des effets d'une traction[2] ou d'un cisaillement[3]. "

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    • "They tried to relate the position of these peaks with different T f , and estimated the time of heating treatment. They even tried to make calibration equations linking the wave number and T f of different silica materials [17] . "
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