High-Temperature Ageing of Modern Polymer-Coated Optical Fibres

Autor: Ph. M. Nellen, Pascal Mauron, Urs Sennhauser
Rok vydání: 1998
Předmět:
Zdroj: MRS Proceedings. 531
ISSN: 1946-4274
0272-9172
DOI: 10.1557/proc-531-125
Popis: Reliability and durability are essential for optical fibres in both telecommunication networks and sensor applications. We report on stress-free accelerated ageing of modem telecommunication fibres in a temperature range from 60 °C to 150 °;C in dry air, relative humidity (rh) up to 85 %, and deionised water. Fibre fracture stress was measured by dynamic tensile testing according to IEC 60793-1-3 standard requirements. Ambient humidity effects on fibre fracture strength are shown. High temperature and relative humidity ageing behaviour of fibres and acrylate coatings is discussed. Fibre fracture strengths were fitted as functions of ageing time and ageing temperature using single process Arrhenius-based models. Acceleration factors can differ by several orders of magnitude, depending on the activation energy of the process. High temperatures damage acrylate coatings, which might deteriorate its adhesion to the fibre, thus introducing new ageing mechanisms not experienced under service conditions. Nevertheless, short time ageing at high temperature is useful for estimating relative lifetime of different products and for optimizing production process.
Databáze: OpenAIRE
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