G. W. Barton

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An optical fiber taper is fabricated by heating and stretching a fiber. The resulting taper shape is important as it strongly affects optical performance. In this paper, the tapering process of solid optical fiber is modeled and analyzed under several heating and stretching conditions. The fiber material is assumed to be of non-Newtonian inelastic type. The(More)
By combining theoretical, numerical, and experimental analyses, this paper examines the continuous draw process that underpins the fabrication of microstructured optical fibers (MOFs) with the aim of quantifying the impact of material properties and drawing conditions on the hole structure in the finished fiber. First, by treating the continuous draw(More)
In drawing microstructured optical fibers (MOFs), the cross-sectional hole structure, including holes' relative size and shape, in a finished fiber drawn down from a preform can be different from that designed in the preform due to combined effects of draw tension and surface tension. As a result, the fiber's optical properties relative to the initial(More)
The Department of Chemical Engineering, Sydney University, has established a program built on a problem-based learning (PBL) approach that incorporates a diversity of major projects. This program is both novel and aligned with the graduate attributes prescribed by professional accreditation bodies, both nationally and internationally. Within the new(More)
Microstructured optical fibres were first developed in 1996 and have subsequently generated enormous interest. Important features associated with such fibres are their ability to remain single-moded over a very large frequency range, to be single-moded with a large mode area, and the ability to guide light in air. Modifications of the hole structure have(More)
A uniform transverse temperature profile is crucial for the direct draw of microstructured optical fibers (MOFs). This can be difficult to achieve for preforms made from materials of poor thermal conductivity, such as polymer. In this paper, we have investigated the transient heating process for drawing MOFs from preforms made from polymethylmethacrylate.(More)
There is an emerging demand for specialty silica-based fibres whose specifications are considerably tighter than those for current telecommunications grade fibre. This study considers measurement and control related issues that needs to be successfully addressed so as to meet these specifications. Both key stages in the overall process (i.e. preform(More)