公开(公告)号：US07100400B2

公开(公告)日：2006-09-05

申请号：US10378769

申请日：2003-03-04

申请人： Suhas Bhandarkar ,  Yoram De Hazan ,  John Burnette MacChesney ,  Thomas Edward Stockert

发明人： Suhas Bhandarkar ,  Yoram De Hazan ,  John Burnette MacChesney ,  Thomas Edward Stockert

IPC分类号： C03B37/016 ,  C03C3/00

CPC分类号： C03C1/006 ,  C03B19/12

摘要： The use of large dense vitreous spherical (LDVS) silica powders for making sol-gel silica bodies has been found to have important advantages. Among these are higher gel strength, higher silica loading, more rapid aging and drying of the gel, a reduction in the amount of organic additives leading to reduced process time required for organic burn-off, and easier removal of contaminant particles due to their larger size. It was also discovered that combining LDVS particles with conventional non-spherical, lower density, aggregate particle mixtures, further improves the process.

摘要翻译： 已经发现使用大密度玻璃球（LDVS）二氧化硅粉末制备溶胶 - 凝胶二氧化硅体具有重要的优点。 其中包括较高的凝胶强度，较高的二氧化硅负载量，更快速的老化和凝胶干燥，减少有机添加剂的量，从而有机燃烧所需的工艺时间缩短，并且由于较大的污染物颗粒更容易去除污染物颗粒 尺寸。 还发现将LDVS颗粒与常规的非球形，低密度聚集体颗粒混合物结合，进一步改善了工艺。

公开(公告)号：US06571582B2

公开(公告)日：2003-06-03

申请号：US09838727

申请日：2001-04-19

申请人： Suhas Bhandarkar ,  Yoram De Hazan ,  John Burnette MacChesney ,  Thomas Edward Stockert

发明人： Suhas Bhandarkar ,  Yoram De Hazan ,  John Burnette MacChesney ,  Thomas Edward Stockert

IPC分类号： C03B37016

CPC分类号： C03C3/06 ,  C03B19/12 ,  C03B37/016 ,  C03C1/00

摘要： The use of silica powders having large particle sizes in making sol-gel silica bodies has been found to have important advantages. Among these are higher gel strength, higher silica loading, more rapid aging and drying of the gel, a reduction in the amount of organic additives leading to reduced process time required for organic burn-off, and easier removal of contaminant particles due to their larger size. It was also discovered that spherical particle morphology contributes to the improved properties.

公开(公告)号：US06467312B1

公开(公告)日：2002-10-22

申请号：US09613320

申请日：2000-07-11

申请人： Yoram De Hazan ,  John Burnette MacChesney ,  Thomas Edward Stockert ,  Dennis J Trevor ,  Robert Scott Windeler

发明人： Yoram De Hazan ,  John Burnette MacChesney ,  Thomas Edward Stockert ,  Dennis J Trevor ,  Robert Scott Windeler

IPC分类号： C03B37025

CPC分类号： G02B6/02347 ,  C03B19/12 ,  C03B37/016 ,  C03B2203/14 ,  C03B2203/42

摘要： The disclosed method of making microstructured optical fiber comprises providing a mold, with a multiplicity of elongate elements extending into the mold and being maintained in a predetermined spatial arrangement with respect to the mold. Silica-containing sol is introduced into the mold and is caused to or permitted to gel, such that a gel body results. After removing the elongate elements from the gel body and removing the gel body from the mold, the gel body is dried, sintered and purified, and the microstructured fiber is drawn from the sintered body.

摘要翻译： 公开的制造微结构光纤的方法包括提供模具，多个细长元件延伸到模具中并相对于模具保持预定的空间布置。 将含硅溶胶引入模具中并引起或允许凝胶化，从而导致凝胶体。 从凝胶体中除去细长元件并从模具中取出凝胶体后，将凝胶体干燥，烧结和纯化，并将微结构纤维从烧结体中拉出。

公开(公告)号：US06715322B2

公开(公告)日：2004-04-06

申请号：US09755914

申请日：2001-01-05

申请人： Yoram De Hazan ,  John Burnette MacChesney ,  Thomas Edward Stockert ,  Christopher Alan White

发明人： Yoram De Hazan ,  John Burnette MacChesney ,  Thomas Edward Stockert ,  Christopher Alan White

IPC分类号： C03C2100

CPC分类号： C03B37/01446 ,  C03B2201/12

摘要： The process time required for fluorine doping of porous silica bodies to produce fluorine doped preforms for the manufacture of depressed index optical fibers is reduced by separating the doping step into a predeposit step, where “excess” fluorine is deposited on the silica particles, and a drive-in step where atomic fluorine is distributed into the silica particles. The drive-in step is conveniently combined with the sintering or consolidation step to further enhance the efficiency of the doping process.

摘要翻译： 通过将掺杂步骤分离成预沉积步骤，其中“过量的”氟沉积在二氧化硅颗粒上，减少多孔二氧化硅的氟掺杂以制备用于制造凹陷折射率光纤的氟掺杂预成型件所需的处理时间， 原子氟分布到二氧化硅颗粒中的进入步骤。 驱入步骤方便地与烧结或固化步骤组合以进一步提高掺杂过程的效率。

公开(公告)号：US06802191B2

公开(公告)日：2004-10-12

申请号：US09837983

申请日：2001-04-19

申请人： Yoram De Hazan ,  John Burnette MacChesney ,  Eric M. Monberg ,  Thomas Edward Stockert

发明人： Yoram De Hazan ,  John Burnette MacChesney ,  Eric M. Monberg ,  Thomas Edward Stockert

IPC分类号： C03C2560

CPC分类号： C03B37/01446 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22

摘要： The doped silica core region of a core rod for an optical fiber preform is protected against unwanted fluorine doping during fluorine doping of the outer silica layer by selectively consolidating the core region prior to fluorine doping. Due to dopants in the core region, the soot in the core region consolidates before the soot in the outer undoped region. This inherent property allows the entire core rod to be heated prior to fluorine doping resulting in selective partial consolidation and preventing fluorine doping of the doped center core region. The process time required may be reduced by using incremental fluorine doping. In the incremental doping process the doping step is separated into a deposit step, where “excess” fluorine is deposited on the silica particles, and a drive-in step where atomic fluorine is distributed into the silica particles. The drive-in step is conveniently combined with the sintering or consolidation step to further enhance the efficiency of the doping process.

摘要翻译： 用于光纤预制棒的芯棒的掺杂二氧化硅芯区域通过在氟掺杂之前选择性地固化芯区域来保护外氟化硅层的氟掺杂期间的不需要的氟掺杂。 由于核心区域中的掺杂剂，核心区域中的烟灰在外部未掺杂区域内的烟灰之前固结。 这种固有性质允许在氟掺杂之前将整个芯棒加热，从而导致选择性部分固结并防止掺杂中心芯区域的氟掺杂。 可以通过使用增量氟掺杂来减少所需的处理时间。 在增量掺杂过程中，掺杂步骤被分离成沉积步骤，其中“过量的”氟沉积在二氧化硅颗粒上，以及将原子氟分布到二氧化硅颗粒中的驱入步骤。 驱入步骤方便地与烧结或固结步骤组合以进一步提高掺杂过程的效率。