液相沉积金属毛细管氧化锗空芯光纤及其激光传输可靠性研究

项目名称： 液相沉积金属毛细管氧化锗空芯光纤及其激光传输可靠性研究

项目编号： No.61275100

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 敬承斌

作者单位： 华东师范大学

项目金额： 75万元

中文摘要： 本项目探索用力学和散热性能更好的金属毛细管代替传统石英玻璃毛细管制备传输二氧化碳激光可靠性更高的氧化锗红外空芯光纤。选择柔韧、高熔点和低化学活性金属毛细管（镍、铌、钽合金等），用内循环高压脉冲微纳粒子流体抛光管内表面，在管内壁上用水性溶胶制备氧化铝缓冲层，通过室温液相沉积在管内生长氧化锗反射膜，将膜原位熔融致密化后得到光纤。本项目拟通过金属毛细管材质尺寸优化设计、毛细管内抛光机制、用氧化铝缓冲层调控沉积氧化锗膜和阻止金属管内表面热氧化、光纤传输激光性质和可靠性规律等方面的研究，获得有较高可靠性金属毛细管氧化锗空芯光纤的研制原理和技术，揭示这类光纤传输二氧化碳激光的可靠性规律，为促进二氧化碳激光在红外探测、激光生命医疗、窄禁带半导体电子自旋调控、长波红外信息传输、激光点火、材料成型加工等领域的深入应用提供提供理论和技术支持。

中文关键词： 金属毛细管；空芯光纤；二氧化碳激光；液相沉积；传输可靠性

英文摘要： We intend to fabricate germanium dioxide hollow optical fiber with higher reliability for delivery of carbon dioxide laser beam by substituting a robust metal pipe for a conventional silica glass tube. Flexible, robust metallic pipes with high melting points as well as low chemical reactivity are selected as structural tubes. The inner wall of the metal pipe will be polished using a pulse high-pressure driven fluid containing micro- to nano-meter sized solid particles. An alumina buffer layer is coated on the inner tube wall using an aqueous alumina sol. A homogeneous liquid phase deposition (LPD) process is used to grow germanium dioxide reflective films inside the tubes at room temperature. A hollow waveguide sample can be obtained after densification of the germanium dioxide film at a temperature close to its melting point. The type and size of the metal pipe will be carefully designed. We will also develop a proper method to polish the metal pipe. The alumina buffer layer and its behaviors in improvement of the quality of the LPD-derived germanium dioxide film and oxidation resistance of the metal pipe will be studied. This project also aims at analyzing the properties and rules of the laser beam transmitted through the metal pipe germanium dioxide optical fiber. We expect to establish the principles and fin

英文关键词： metallic capillary tube；hollow fiber；carbon dioxide laser；liquid phase depositon；reliability for delivering laser radiations