When light is launched into either an optical fiber or a bulk glass rod, discrimination of scattered and absorbed energies is possible through the different thermokinetics of these phenomena. The design and performance of a differential calorimetric arrangement are presented and simultaneous measurements of the various loss coefficients are reported. At the present time, sensitivity is of the order of 1 dB/km and can be further improved.
Nous présentons des résultats expérimentaux sur la dégradation des caractéristiques optiques des fibres pour télécommunications lorsqu'elles sont soumises à une contrainte de tension. Après avoir localisé les défauts mécaniques à l'intérieur de la fibre, on enregistre leur évolution sous contrainte croissante. Des résultats de fatigue statique sont également présentés.Abstract. 2014 We report experimental evidence of the optical degradation of a fiber under tensile stress. The localization of the fiber defects, their evolution under increasing stress and static fatigue results are presented.
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