Effects of Polymer Coatings on Strength and Fatigue Properties of Fused Silica Optical Fibers

Wei, T.

doi:10.1111/j.1551-2916.1986.tb00022.x

Cited by 15 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inert strength after zero-stress aging can be expressed empirically as a function of aging time t by26 S = S0(1+at) (6) where S0 is the initial inert strength and a, 3 are aging constants. The rate of strength degradation due to aging can be obtained by taking the derivative of Eq.…”

Section: 1mentioning

confidence: 99%

Accelerated static fatigue behavior of optical glass fibers

Cuéllar¹,

Kennedy²,

Roberts³

et al. 1993

SPIE Proceedings

View full text Add to dashboard Cite

Optical glass fibres can exhibit an accelerated static fatigue behaviour at long times under moderate stresses. This behaviour is manifested by a transition in the static fatigue plot of In (time to failure) vs. In (applied stress). Such nonlinear behaviour is not predicted by simple crack growth models and leads to overestimation of lifetimes at low stress levels. This fatigue transition depends on temperature, humidity, pH, and on the presence or absence and type of polymeric coating on the fibre. While the transition has been reported by numerous investigators for fibres tested in water immersion, there is only one observation in the literature of a transition in relative humidity (Wang and Zupko, 1978). Similarly, optical fibres can exhibit a pronounced strength degradation due to zero-stress aging. The onset of significant strength loss due to zero-stress aging in water occurs at about the same time as the static fatigue transition.The two-point bending static fatigue and zero-stress aging behaviours of two commercial telecommunications fibres were measured at 85°C in water immersion and in 60% and 85% r.h. In tests extending out to 680 days, neither fibre has shown evidence of a transition occurring in relative humidity. Similarly, both fibres showed modest changes in their two-point bending strength after aging for 1.5 years in the same humidity environments. A model was developed which accounts for the simultaneous effects of zero-stress aging and stress corrosion on crack growth. This model can be used to predict the occurrence of the static fatigue transition, and was applied to both the 85°C water immersion and the 85°C, 85% r.h. data.

show abstract

Section: 1mentioning

confidence: 99%

Accelerated static fatigue behavior of optical glass fibers

Cuéllar¹,

Kennedy²,

Roberts³

et al. 1993

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

“…The bare fiber section compromises the long-term reliability of the fiber component. The combination of moisture and stress can cause microscopic flaws in the glass to propagate, resulting in fiber failure [13]. Recently, acoustooptic coupling using torsional waves was demonstrated in a thin metal-coated optical fiber [14].…”

Section: Introductionmentioning

confidence: 99%

Acousto-optic interaction in polyimide coated optical fibers with flexural waves

Alcusa-Saez¹,

Dı́ez²,

Rivera–Pérez³

et al. 2017

Opt. Express

View full text Add to dashboard Cite

Acousto-optic coupling in polyimide-coated single-mode optical fibers using flexural elastic waves is demonstrated. The effect of the polyimide coating on the acousto-optic interaction process is analyzed in detailed. Theoretical and experimental results are in good agreement. Although the elastic attenuation is significant, we show that acousto-optic coupling can be produced with a reasonably good efficiency. To our knowledge, it is the first experimental demonstration of acousto-optic coupling in optical fibers with robust protective coating.

show abstract

“…Certainly both strength and time-to-failure of optical fibers are good if the polymer protective coating adheres well to the glass fiber surface and the diffusion of water vapor through this polymer is small. 4 The influence of water vapor diffusion through the polymer protective layers on the mechanical properties of optical fibers was widely investigated. There are also many methods of quantitative determination of the water diffusion ~oefficient.~.~ Unfortunately, the determination of adhesion of UV-cured polymers to the fused silica optical fibers is more troublesome.…”

Section: Introductionmentioning

confidence: 99%