CAREER: Transport Phenomena in the Chemical Vapor Deposition of Hermetic Optical Fiber Coatings: An Integrated Research and Education Program

这项研究计划将研究密封涂层，旨在限制水和氢向光纤中的扩散，以提高光纤的抗疲劳和氢致衰减能力。通过从根本上了解通过化学气相沉积制造这种薄膜所涉及的传输现象，可以发现改进的密封涂层。在新的实验和理论分析的指导下，该项目将利用工艺特性关系的基本知识，更好地了解如何制造优质的密封光纤涂层。从该项目中获得的基本知识将用于将拉伸速度、纤维温度和反应物气体浓度等工艺参数与涂层相、结构、密封性和沉积速度联系起来。由于这些关系将能够确定改善密封纤维性能的新方法和最佳条件，因此这项研究的结果有望提高纤维性能和可靠性，从而改善我们的信息技术基础设施。

This research program will investigate hermetic coatings designed to limit the diffusion of water and hydrogen into optical fibers in order to improve fiber resistance to fatigue and hydrogen-induced attenuation. An improved hermetic coating will be found by fundamentally understanding the transport phenomena involved in the manufacture of such films by chemical vapor deposition. Guided by new experimental and theoretical analyses, this project will develop a better understanding to manufacture superior hermetic optical fiber coatings using fundamental knowledge of process property relationships. Fundamental knowledge gained from this project will be used to link process parameters such as draw rate, fiber temperature, and reactant gas concentration to the coating phase, structure, hermeticity, and deposition rate. Since these relationships will be able to identify new methods and optimal conditions to improve hermetic fiber performance, results from this study are expected to enhance fiber performance and reliability, and hence improve our information technology infrastructure.