Effect of thermal stresses on the static fatigue of double-coated optical fibers

2005 ◽  
Vol 89 (1) ◽  
pp. 159-163 ◽  
Author(s):  
Sham-Tsong Shiue ◽  
Ting-Ying Shen
Keyword(s):  
Optical Fibers ◽  
Thermal Stresses ◽  
Static Fatigue

Effect of coating thickness on thermal stresses in tungsten-coated optical fibers

2000 ◽  
Vol 87 (8) ◽  
pp. 3759-3762 ◽  
Author(s):  
Sham-Tsong Shiue ◽  
Pin-Tzu Lien ◽  
J.-L. He
Keyword(s):  
Optical Fibers ◽  
Coating Thickness ◽  
Thermal Stresses

Activation Energy for Strength Degradation of Fused Silica Optical Fibers

1998 ◽  
Vol 531 ◽  
Author(s):  
Yunn-Shin Shiue ◽  
M. John Matthewson
Keyword(s):  
Activation Energy ◽  
Optical Fibers ◽  
Pure Water ◽  
Strength Degradation ◽  
Fused Silica ◽  
Static Fatigue ◽  
Buffer Solution ◽  
Silica Fibers ◽  
Apparent Activation Energies ◽  
Stress Dependent

AbstractThe strength degradation behavior of fused silica optical fiber is well known to be sensitive to the temperature and an apparent activation energy can be determined. In addition, it has been observed that the activation energy also depends on the applied stress and the nature of the environment. However, no consistent model for this behavior has emerged. We propose a chemical kinetics model which accounts for the temperature dependence of the dissociation of water which predicts that degradation should be faster in pH 7 buffer than in pure water. Static fatigue of fused silica fibers in both water and pH 7 buffer solution has been carefully studied as a function of temperature to test the model. The apparent activation energies are stress dependent, and, while the dependency is not clear, different environments give different dependencies. These observations support the proposed model.

Aging of Silica Optical Fiber in Static Fatigue Tests

2016 ◽  
Vol 859 ◽  
pp. 3-8
Author(s):  
Noella Evano ◽  
Rochdi El Abdi ◽  
Marcel Poulain
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Fatigue Tests ◽  
Hot Water ◽  
Static Fatigue ◽  
Time To Failure ◽  
Thermal Dependence ◽  
Arrhenius Model ◽  
Bending Stresses ◽  
Silica Optical Fiber

During their use, optical fibers are subject to harsh installation and environmental conditions. To evaluate more precisely the lifetime of an optical fiber, it is necessary to study the mechanical behavior of optical fibers under extreme conditions, in particular under mechanical and thermal stress.This paper presents the results of new silica optical fibers aged in hot water between 20°C and 70°C and subjected to mechanical static bending stresses from 3 GPa to 3.5 GPa. Thermal dependence of the time to failure was observed. This dependence can be described by the Arrhenius model, where the activation energy is one of the main physical characteristic.

Effect of buffer coating on static fatigue of optical fibers in bending

1987 ◽  
Author(s):  
ENRIQUE CUELLAR ◽  
DANIEL R. ROBERTS ◽  
LEE M. MIDDLEMAN
Keyword(s):  
Optical Fibers ◽  
Static Fatigue
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