• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>55th IWCS/Focus~TM Conference >Formation of Hydroxyl Due To Reaction of Hydrogen with Quartz during Optical Fiber Preform Making By Furnace Chemical Vapour Deposition (FCVD) Method
【24h】

Formation of Hydroxyl Due To Reaction of Hydrogen with Quartz during Optical Fiber Preform Making By Furnace Chemical Vapour Deposition (FCVD) Method

机译：炉化学气相沉积（FCVD）法制备光纤预制棒时氢与石英反应形成羟基

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hydroxyl (OH) groups are one of the main impurities contributing to optical transmission loss in fibers. In modified chemical vapor deposition (MCVD) process, which is widely used for quartz preform fabrication, one of the sources of OH is oxygen-hydrogen burner. During the deposition and especially "jacketing" processes with heating the tubes in a burner flame, molecular hydrogen deeply penetrates tube wall and reacts with the preexisting defects in quartz to form hydroxyl. In FCVD preform fabrication method an induction furnace is used instead of oxygen-hydrogen burner. Furnace hot zone is purged by argon gas flow in order to protect heating elements from oxidation in air. Using this method to produce optical fiber preforms makes it possible to avoid on of the main sources of hydrogen and significantly reduce its diffusion into quartz. In this work, the formation mechanism of hydroxyl due to reaction of hydrogen with quartz during preform making by FCVD method was investigated. The obtained results proved that OH concentration in preform made by furnace CVD process can be reduced to a lower level than in standard MCVD process. This improvement makes possible to fabricate optical fibers with significantly reduced water peak by internal deposition process.
机译：羟基（OH）是造成光纤中光传输损耗的主要杂质之一。在广泛用于石英预制棒制造的改进化学气相沉积（MCVD）工艺中，OH的来源之一是氢氧燃烧器。在沉积过程中，尤其是在用燃烧器火焰加热管的过程中，“分子夹层”会深深地渗透到管壁中，并与石英中预先存在的缺陷反应形成羟基。在FCVD瓶坯制造方法中，使用感应炉代替氢氧燃烧器。炉子热区被氩气流吹扫，以保护加热元件不受空气中氧化的影响。使用这种方法生产光纤预制棒，可以避免使用氢的主要来源，并显着减少其向石英中的扩散。在这项工作中，研究了在通过FCVD方法制备预成型坯过程中氢与石英反应引起的羟基形成机理。获得的结果证明，与标准的MCVD工艺相比，通过炉CVD工艺制备的预成型坯中的OH浓度可以降低到较低的水平。这种改进使得可以通过内部沉积工艺来制造水峰明显减少的光纤。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号