公开(公告)号：US4582480A

公开(公告)日：1986-04-15

申请号：US637246

申请日：1984-08-02

申请人： Brian Lynch ,  Pundi L. Narasimham ,  Fred P. Partus

发明人： Brian Lynch ,  Pundi L. Narasimham ,  Fred P. Partus

IPC分类号： C03C17/02 ,  B01D1/00 ,  B01D1/14 ,  B01J4/02 ,  B01J7/02 ,  C03B37/014 ,  C03B37/018 ,  C23C16/44 ,  C23C16/448 ,  C23C16/455 ,  C23C16/52 ,  F27D23/00 ,  B01D47/02 ,  F22B1/28 ,  F27B17/00

CPC分类号： C23C16/4482 ,  B01D1/0082 ,  B01D1/14 ,  C03B37/01413 ,  C03C17/02 ,  C03B2207/86 ,  C03B2207/87

摘要： A vapor delivery system for the manufacture of an optical preform includes a deposition bubbler (60) and another bubbler (40) referred to as a supply bubbler which is interposed between a reservoir (24) of a liquid and the deposition bubbler. Heat energy is applied to the supply bubbler and to the deposition bubbler to vaporize liquid therein. A carrier gas is introduced into the liquid in the supply bubbler at a location below the free surface and into the deposition bubbler to cause vapor of the liquid to become entrained in the carrier gas and to flow from the supply bubbler into the deposition bubbler and from the deposition bubbler to a substrate tube from which an optical preform is made. Facilities are provided for maintaining sufficient liquid in the supply bubbler and suitable temperatures of the liquid in the supply and deposition bubblers to control the vapor flow into and out of the deposition bubbler to prevent unintended perturbations in the deposition bubbler. As a result, the concentration level of the vapor which is entrained in the carrier gas and delivered to the substrate tube is maintained at a substantially constant value.

摘要翻译： 用于制造光学预型件的蒸气输送系统包括沉积起泡器（60）和称为供应起泡器的另一起泡器（40），其被插入在液体的储存器（24）和沉积起泡器之间。 将热能施加到供应起泡器和沉积起泡器以使其中的液体蒸发。 将载气引入供应起泡器中的液体在自由表面下方的位置并进入沉积起泡器，以使液体的蒸汽夹带在载气中并从供应起泡器流入沉积起泡器，并从 沉积起泡器到达制造光学预型件的基底管。 提供了用于在供应起泡器中保持充足液体的设施和在供应和沉积起泡器中的液体的适当温度以控制进入和离开沉积起泡器的蒸汽流，以防止沉积起泡器中的意外的扰动。 结果，夹带在载气中并被输送到基底管的蒸气的浓度水平保持在基本恒定的值。

公开(公告)号：US4941905A

公开(公告)日：1990-07-17

申请号：US168552

申请日：1988-03-04

申请人： Pundi L. Narasimham

发明人： Pundi L. Narasimham

IPC分类号： G02B6/00 ,  C03B37/014 ,  C03B37/016

CPC分类号： C03B37/016 ,  C03B37/01446 ,  C03B37/01486 ,  Y02P40/57 ,  Y10S65/901

摘要： An optical preform is prepared first by depositing soot about a glass subate rod (22) to form a boule. Then the soot boule is sintered to consolidate the material and provide a preform from which optical fiber is drawn. The boule is relatively large so that the resulting preform is capable of providing more optical fiber than those used in the past. In order to be able to sinter successfully the enlarged boule, microwave energy from a furnace (60) is coupled to the glass rod so that the sintering proceeds from the rod radially outwardly thereby allowing gases readily to escape and rendering the process highly efficient.

公开(公告)号：US4578253A

公开(公告)日：1986-03-25

申请号：US575600

申请日：1984-01-31

申请人： Roger F. Gill ,  Pundi L. Narasimham

发明人： Roger F. Gill ,  Pundi L. Narasimham

IPC分类号： B01D53/46 ,  B01D33/00 ,  B01D36/00 ,  B01D37/00 ,  B01D53/34 ,  B01D53/64 ,  B01D53/77 ,  B01D61/14 ,  C03B37/014 ,  C03B37/018 ,  C03B37/025 ,  C03B37/075

CPC分类号： C03B37/01846 ,  B01D36/00 ,  B01D53/46 ,  B01D61/147 ,  B01D61/18 ,  B01D63/06 ,  C03B37/0144 ,  Y10S261/46

摘要： The effluent of a process for making a preform from which an optical fiber is drawn is directed into a scrubber (40) of a loop (20) where it is treated with an aqueous solution to provide a solvent mixture which comprises particulates and a solvent solution including germanium. Subsequently, the solvent mixture is moved into a first filter system (55) which provides a filtrate free of particulates above a first size that is returned to the scrubber for reuse and a residue. Then the residue from the first filter system is moved into a second filter system (80) which provides a filtrate free of particulates larger than a second size that is smaller than the first size and a residue. The filtrate from the second filter system also is returned to the scrubber for reuse while the residue from the second filter system is recirculated therethrough. When the germanium concentration reaches a predetermined level, portions of the residue from the second filter system are withdrawn and subsequently treated with a precipitating agent to recover germanium.

摘要翻译： 用于制造预成型体的方法的流出物被引导到环（20）的洗涤器（40）中，其中用水溶液处理，以提供包含颗粒和溶剂溶液的溶剂混合物 包括锗。 随后，将溶剂混合物移入第一过滤系统（55），该第一过滤器系统（55）提供不含高于第一大小的微粒的滤液，其返回到洗涤器中用于再利用和残留。 然后将来自第一过滤系统的残余物移入第二过滤器系统（80），其提供不含比第一尺寸小的第二尺寸的颗粒的滤液和残余物。 来自第二过滤器系统的滤液也被返回到洗涤器中以便重新使用，而来自第二过滤器系统的残余物通过其再循环。 当锗浓度达到预定水平时，取出来自第二过滤系统的残余物的一部分，然后用沉淀剂处理以回收锗。