Progress in reliability of silica optical fibres

Abdi²,

Poulain³

et al. 2010

SPIE Proceedings

Self Cite

Based on the increased interest for optical fibres development for the use in smart structures and sensors, this study has aimed to investigate the chemical reliability of standard commercial epoxy-acrylate polymer coated fibres subjected to aggressive chemical reagents in gaseous and liquid phase, such as acetylene, ammoniac, dimethyl sulfoxide. Multimode optical fibre was exposed to gaseous reagents for different durations after prior vide exposure. Tensile testing results were treated using Weibull statistics. A comparison of mean failure strength of as-aged fibres to the water influence for similar exposure duration has revealed the highest sensitivity to dimethyl sulfoxide reagent.

Section: Tensile Testing Proceduresmentioning

confidence: 99%

Strength of silica optical fibre subjected to chemical environment

Abdi²,

Poulain³

et al. 2010

SPIE Proceedings

Self Cite

“…To ensure the long-term mechanical strength of the optical fibers, a polymer coating is applied onto the fiber surface during fabrication. The fiber coating protects the cladding from any external damage, including chemical reaction in humid environment and, not lastly, ensures fatigue protection and bending insensitivity [6,7].…”

Section: Introductionmentioning

confidence: 99%

Stress corrosion in silica optical fibers: Review of fatigue testing procedures

AIP Conference Proceedings

Borda

Dumitrache-Rujinski

et al. 2018

Self Cite

The expected lifetime of optical fibers used either in telecommunication technologies or smart applications are closely related to the chemical reaction on the silica network. Due to the manufacturing processes or the handling procedures, the flaws spread on the fiber surface are inherently present. The aging mechanism is assumed to enlarge or to extend these flaws. Based on systematic experiments one may notice that water may induce a certain curing effect. Silica optical fibers have been aged in water; series of samples have been subjected to overlapped stretching or bending. Other series have been subjected to overlapped aging effect of microwaves and hot water. Finally, samples were submitted to dynamic tensile testing. The Weibull's diagram analysis shows mono or bimodal dispersions of flaws on the fiber surface, but the polymer coating appears vital for fiber lifetime. While humidity usually affects the fiber strength, the series of testing has revealed that in controlled conditions of chemical environment and controlled applied stress, fiber strength may be increased. A similar effect may be obtained by external factors such as microwaves or previous elongation, too.

“…In this respect, reliability issues have been studied, much work being achieved on this matter [1, 2 a.o]. Our previous studies have concerned optical fibres aging in water for long periods (from several months up to 2 years), then shorter periods (from several days up to 3 months) and then overlapping a supplementary energy (a controlled applied stress) to the water corrosion factor [3,4].…”

Section: Introductionmentioning

confidence: 99%

Reliability Evolution of Optical Fibre Subjected to Chemical Environment

Abdi

Poulain

et al. 2012

AMM

The increased optical fiber development for a variety of physical and chemical measurements using smart structures and sensors leads to investigate the mechanical and chemical reliability of standard commercial acrylate polymer coated fibers. A comparison of mean failure strength of as-aged fibres to the water influence for similar exposure duration has revealed the highest sensitivity to dimethyl sulfoxide reagent (DMSO). SEM investigation revealed different damage levels in function of the aging conditions.