Thermal Processes in Optical Materials Fabrication: Aerosol Doping

研究目的是通过气溶胶掺杂来改进光纤（波导）的制造。提出的方法涉及MCVD（改性化学气相沉积）和OVD（外部气相沉积）技术中溶液液滴气溶胶的运输和蒸发。本研究的重点是模拟流体力学和传热方面。结果将包含在先前为MCVD过程开发的计算机代码中。这项工作将与布朗大学的实验工作合作完成。该方案的新颖之处在于，雾是由超声波雾化器产生的，并被输送到沉积表面。在光纤中掺杂非挥发性掺杂剂的新技术与制造用于电信目的的光纤激光放大器特别相关。

The research objective is to improve the fabrication of optical fibers (waveguides), by using aerosol doping. The proposed method involves the transport and evaporation of an aerosol of solution droplets in the MCVD (Modified Chemical Vapor Deposition) and OVD (Outside Vapor Deposition) techniques. The focus of this research is on the modelling fluid mechanics and heat transfer aspects. The results will be included in previously developed computer codes for the MCVD process. This work will be done in collaboration with the experimental effort carried out at Brown University. The novelty of the proposal consists in the way in which the mist is created by an ultrasonic nebulizer and transported to the deposition surface. The new techniques for the doping of non- volatile dopants into optical fibers have particular relevance to the fabrication of fiber laser amplifiers for telecommunications purposes.