Optical Fiber Preforms: Study of the Outside Vapor Deposition Process

本研究探讨光纤预制棒之外部气相沈积制程。该过程是包括颗粒形成、生长和沉积的过程的元素的复杂组合。研究的目的是确定颗粒的生长历史，颗粒成分和沉积效率。这将通过烟尘形成和沉积过程的实验研究以及颗粒形成、生长和运输的分析来实现。外部气相沉积工艺可生产最高性能的纤维。该工艺具有灵活性，可以以最低的成本生产各种纤维。然而，收集效率仅为50%左右。因此，了解这一过程的基本特征将有助于这一过程的推进。预计研究结果将促进这种生产技术的发展，并有助于优化工艺。

This research addresses the Outside Vapor Deposition process for the production of optical fiber preforms. The process is a complex combination of elements including the processes of particle formation, growth and deposition. The objective of the research is to determine the particle growth history, the particle composition and the efficiency of deposition. This will be achieved through both experimental studies of the soot formation and deposition processes and analysis of the particle formation, growth and transport. The Outside Vapor Deposition process produces the highest performance fibers. This process has the flexibility to manufacture diverse fibers at the lowest cost. However, the collection efficiency is only about 50 percent. Therefore the understanding of the basic characteristics of the process will contribute to the advancement of this process. It is expected that the results of the investigation will advance this production technique and aid in the optimization of the process.