Analysis of fracture damage in silica optical fibers
نویسنده
چکیده
Microstructured optical fibres (with a periodic transverse microstructure) are of interest since they offer a simple alternative to controlling the index profile of optical waveguides. Although many types of optical fibres and cables have been developed to meet the needs of communications service providers for longterm performance and reliable operation, the brittle nature, aging and fatigue of these fibres, remains to be the key materials issues. The flaws on the surface of fibres caused by processing (drawing) or subsequent assembling make the situation more complex. In this work, experimental investigation and fracture mechanics analysis have been conducted to understand the fracture behavior of these newly developed optical fibres. The results are believed to be useful for design, fabrication and evaluation of optical fibres for a variety of applications.
منابع مشابه
Fabrication of polymer-SiO2 nanocomposite optical fibers with a new method
At first step polymer optical fibers (POFs) are used in short distance for optical data transmissions. At second step SiO2 nanoparticles were prepared by sonochemical-assisted method. Silica nanoparticles were added to polymer matrix to prepare polymer based nanocomposites. Most of the POF applications are in the medical and electrical devices. There are several methods for fabrication of POFs,...
متن کاملOptical Fiber Embedded in Epoxy Glass Unidirectional Fiber Composite System
We aimed to embed silica optical fibers in composites (epoxy vinyl ester matrix reinforced with E-glass unidirectional fibers in mass fraction of 60%) in order to further monitor the robustness of civil engineering structures (such as bridges). A simple system was implemented using two different silica optical fibers (F1-double coating of 172 µm diameter and F2-single coating of 101.8 µm diamet...
متن کاملStudy of optical fiber damage under tight bend with high optical power at 2140 nm
Expanding medical applications of laser power have resulted in an increase in demand for silica optical fibers, but these applications often require the fiber to endure the damaging combination of high laser power levels and increasingly tighter bends. In this study, we examine the damage to step index multimode fibers transmitting Ho:YAG laser light at a wavelength of 2140 nm when bent to a ra...
متن کاملDestruction of silica fiber cladding by the fuse effect.
The phenomenon of destruction of silica fiber cladding by the fiber fuse effect has been observed for the first time to the authors' knowledge. Experiments on the optical discharge propagation along a fiber were conducted with fibers of decreased cladding thickness. The destruction of fiber cladding led to expansion of the optical discharge plasma and to a decrease of its density. This resulted...
متن کاملNew age fibers: the children of the photonic revolution
The Photonics Crystal Fibers (PCFs) also know as “holey” or “micro-structured” fibers herald a new age for optical fibers. The astronomical applications could revolutionize instrument design through: broadband performance combined with excellent UV transmission, extremely large numerical aperture fibers, and aperture transforming fibers improving input coupling/sampling while maintaining a good...
متن کامل