公开(公告)号：US10040714B2

公开(公告)日：2018-08-07

申请号：US14888930

申请日：2014-03-26

申请人： Council of Scientific & Industrial Research ,  Department of Electronics and Information Technology

发明人： Ranjan Sen ,  Maitreyee Saha

IPC分类号： C03B37/018 ,  C03B37/025

摘要： The present invention provides a process for fabrication of ytterbium (Yb) doped optical fiber through vapor phase doping technique. The method comprises deposition of Al2O3 and Yb2O3 in vapor phase simultaneously in combination with silica during formation of sintered core layer. This is followed by collapsing at a high temperature in stepwise manner to produce the preform and drawing of fibers of appropriate dimension. The process parameters have been optimized in such a way that Al and Yb-chelate compounds can be transported to the reaction zone without decomposition and condensation of precursor materials. Thus variations of dopants concentration along the length of the preform have been minimized to

公开(公告)号：US20160083284A1

公开(公告)日：2016-03-24

申请号：US14888930

申请日：2014-03-26

申请人： COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH ,  DEPARTMENT OF ELECTRONICS AND INFORMATION TECHNOLOGY

发明人： Ranjan Sen ,  Maitreyee Saha

IPC分类号： C03B37/018 ,  C03B37/025

CPC分类号： C03B37/01853 ,  C03B37/018 ,  C03B37/01807 ,  C03B37/01815 ,  C03B37/025 ,  C03B2201/36 ,  C03B2203/22 ,  C03B2207/50 ,  C03B2207/66 ,  C03B2207/81 ,  C03B2207/90

摘要： The present invention provides a process for fabrication of ytterbium (Yb) doped optical fiber through vapor phase doping technique. The method comprises deposition of Al2O3 and Yb2O3 in vapor phase simultaneously in combination with silica during formation of sintered core layer. This is followed by collapsing at a high temperature in stepwise manner to produce the preform and drawing of fibers of appropriate dimension. The process parameters have been optimized in such a way that Al and Yb-chelate compounds can be transported to the reaction zone without decomposition and condensation of precursor materials. Thus variations of dopants concentration along the length of the preform have been minimized to

摘要翻译： 本发明提供了一种通过气相掺杂技术制造掺杂镱（Yb）的光纤的方法。 该方法包括在形成烧结芯层的过程中同时与二氧化硅一起沉积气相中的Al2O3和Yb2O3。 随后在高温下以逐步的方式塌缩，以产生预制件并拉出适当尺寸的纤维。 已经优化了工艺参数，使得Al和Yb螯合化合物可以转运到反应区而不会分解和冷凝前体材料。 因此，沿着预制件的长度的掺杂剂浓度的变化已经被最小化到<1％，并且还实现了该方法的良好的重复性。 所得到的纤维也具有光滑的芯包覆边界，没有任何星形缺陷。 该方法可以可靠地用于制造大型Yb掺杂光纤。 纤维还显示出低损耗，可忽略的中心浸渍和良好的光学性能，适用于光纤激光器。