Optical Fiber Drawing and Manufacture: Optimization of Material Properties and Draw Tower Parameters

9633194在拉丝过程中，光纤的材料流动过程和热历史是决定光纤质量的两个因素。本项目研究用于光纤制造的创新拉伸控制技术。为了研究光波导中的残余应力、缺陷的产生和扩散、光纤直径的控制以及由此引起的折射率变化，将开展系统的实验研究，并建立详细的解析/数值模型。将开发用于绘制三种类型的预制件材料和构型的创新技术，包括实践中通常用于验证所开发模型的多层壳体。这项研究的结果对未来光纤制造工艺的需求至关重要。该研究项目在理论和实验之间取得了平衡，将为光纤制造行业提供有价值的发现。

9633194 Jaluria The material flow processes and the thermal history of the optical fibers are two factors in determining the quality of the fiber in the fiber drawing process. This project investigates innovation drawing control techniques for the fabrication of optical fibers. A systematic experimental study along with a detailed analytical/numerical model will be developed to study the residual stresses, generation and diffusion of defects, fiber diameter control, and the resulting refractive index variation in optical waveguides. Innovative techniques will be developed for drawing three types of preform materials and configurations, including the multi-layer case generally used in practice to validate the developed models. The outcomes of the study are critical to the future needs in fiber fabrication process. The research project has a balance between theory and experiment, and will provide valuable findings for the fiber fabrication industry.