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Fiber Mechanical Reliability - Testing

An Indentation Method for Creating Reproducible Proof-Stress Level Flaws in Commercial Optical Fibers  
Abstract: A technique was developed for obtaining proof-stress level flaws in commercial optical fiber with low variability in strength. A Weibull modulus of 50 was achieved with a value of 100 over the lower portion of the distribution. This method will be useful in static fatigue testing of fiber with proof test level flaws.

Quantifying the Puncture Resistance of Optical Fiber Coatings 
Abstract: A simple puncture resistance test has been developed to quantify the ability of fiber coatings to protect the underlying glass surface. Fibers with a wide range of coated dimensions were examined with this test method.

Method for Obtaining Long-Length Strength Distributions for Reliability Prediction  
Abstract: Obtaining a long-length strength distribution is essential for the reliability modeling of optical fibers. This paper demonstrates a technique for measuring the fiber strength distribution of several hundred kilometers of fiber.

A Fiber Bragg Grating Measurement System for Monitoring Optical Fiber Strain  
Abstract: A practical method has been developed for handling optical fiber while simultaneously monitoring fiber stress. The sensing system employs the use of fiber Bragg gratings and is able to produce an accurate history of dynamic stresses in the optical fiber during processing, cabling, and installation events.

Extrinsic Strength Measurements and Associated Mechanical Reliability Modeling of Optical Fiber  
Abstract: Strength testing was performed on over 3,800 km of fiber to obtain a distribution for use in mechanical reliability predictions. With the proper strength distribution, a reliability model has been developed to predict failure probabilities for various stress events.

High Speed Strength Testing of Optical Fiber  
Abstract: Optical fiber models for mechanical reliability require that the initial strength and crack growth parameters be measured. A high speed strength testing apparatus has been fabricated to measure these parameters for fast processing events such as proof testing, coloring, and cabling.

Mechanical Reliability Predictions: An Attempt at Measuring the Initial Strength of Draw-Abraded Optical Fiber Using High Stressing Rates  
Abstract: Strength testing over eight decades in stressing rates was performed on draw-abraded silica-clad fiber. The strength was found to level off at stressing rates in the range of 200,000 kpsi/s (1400 GPa/s).

Optical Fiber Failure Probability Predictions from Long-Length Strength Distributions   
Abstract: Strength data from a recently developed apparatus for measuring long-length fiber strength distributions are analyzed in terms of proof test theory for truncated distributions.

Strength and Dynamic Fatigue Characteristics of Aged Fiber   
An experiment was performed to examine the strength and dynamic fatigue performance of polymer coated optical fiber after various aging conditions including: 30-day hot-humid zero stress aging, shelf life aging, and cyclic hot-humid aging.

Fiber Bragg gratings for stress field characterization inside a connector  
Abstract: This study presents results from an experiment where Bragg gratings were used to measure the stress on a bare optical fiber placed inside a 3M VF-45 connector.