Fiber Mechanical Reliability - Basics
A Response to Assertions that Fiber Manufactured in a Clean Room is Stronger and Less Susceptible to Fatigue
Abstract: From time to time it has been asserted that making fiber in an "ultra-clean" environment could improve optical fiber strength and make the optical fiber less susceptible to fatigue failure and subcritical crack growth. In particular, recently a manufacturer has implied that by making fiber in a clean room, strength values close to the theoretical strength of glass can be obtained. Because of the historical importance of this topic to Corning and the inaccuracy of the above claims we felt it necessary to provide a technical response.
Deployment Considerations for FTTH in Multiple Dwelling Units
Abstract: Densely populated urban areas are being targeted for the next roll-out of fiber-to-the-home (FTTH) deployments. Early investigations by operators into the feasibility of deploying optical cable into MDUs have unveiled new constraints regarding installation techniques and deployments that must be taken into consideration.
The Mechanical Reliability of Corning Optical Fiber in Small Bend Scenarios
Abstract: This paper provides guidance on the mechanical reliability of Corning's optical fiber for the particular case of very tight bends encountered in fiber-to-the-home (FTTH) and premises networks.
Relationship Between Mirror Dimensions and Failure Stress for Optical Fibers
Abstract: In this report the classical dependence of failure stress on fracture mirror size was found to overestimate failure stress for large mirrors. A new empirical relationship was developed to enable predictive determinations of failure stress to levels as low as 20 to 25 kpsi (0.14 to 0.17 GPa).
The Mechanical Reliability of Corning® Optical Fiber in Bending
Abstract: Optical fiber often finds itself in the situation where it is coiled in a tight space, routed through a package or bent as it connects devices together. Each of these situations can place tight bends on the fiber. This paper will examine the effects of bending on the reliability of Corning fiber and give some guidance for fitting fiber into small places.
Mechanical Reliability: Applied Stress Design Guidelines
Abstract: Corning’s mechanical reliability model is used to determine safe tensile and bending stress guidelines for a wide variety of fiber applications.
Suggested Guidelines For the Handling of Optical Fiber
Abstract: The technique with which optical fiber is handled can have a significant impact on the functionality and reliability of a manufacturer's final product. This paper outlines suggested guidelines for the proper handling of optical fiber.
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.