-
公开(公告)号：US06802191B2
公开(公告)日：2004-10-12
申请号：US09837983
申请日：2001-04-19
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。
-
公开(公告)号：US06801700B2
公开(公告)日：2004-10-05
申请号：US10128876
申请日：2002-04-24
IPC分类号： G02B602
CPC分类号： G02B6/02076 , G02B6/02 , G02B6/021 , G02B6/02138 , G02B6/03688 , G02B6/03694 , G02B6/102 , G02B6/2852 , G02B6/4469
摘要： The specification describes optical fibers that are constructed to prevent theft of optical signals. One construction is designed to block access of the core of the fiber to the “writing” radiation necessary to form a grating tap. In this embodiment the optical fiber cladding is provided with a highly absorbing UV layer. In a variation of this embodiment, one or more additional optical paths are provided in the optical fiber to accommodate monitoring signals. The added optical paths allow monitoring signals to be transmitted in the optical fiber, separate from the information signal, to signal an attempt to breach the outer coating or the cladding of the optical fiber. A second case of intrusion is addressed by increasing the sensitivity of the optical fiber to microbending loss to the extent that bends in the fiber cause such high attenuation of the signal that the bends do not go undetected at the receiving station.
摘要翻译： 该规范描述了被构造为防止光信号被盗的光纤。 一种结构被设计成阻挡光纤的核心到形成光栅丝锥所需的“写入”辐射。 在该实施例中，光纤包层设置有高吸收UV层。 在该实施例的变型中，在光纤中提供一个或多个附加光路以适应监视信号。 添加的光路允许监测信号在光纤中传输，与信息信号分离，以表示试图破坏光纤的外涂层或包层。第二种入侵的情况是通过增加第 在光纤弯曲的程度上，光纤到微弯损耗导致信号的这种高衰减，使得弯曲在接收站处不被检测到。
-
公开(公告)号：US06715322B2
公开(公告)日：2004-04-06
申请号：US09755914
申请日：2001-01-05
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。
-
4.发明授权Chemical powder deposition method for the manufacture of optical fiber preforms and optical fibers 有权用于制造光纤预制棒和光纤的化学粉末沉积方法公开(公告)号：US07874180B2
公开(公告)日：2011-01-25
申请号：US11975882
申请日：2007-10-22
IPC分类号： C03C25/16
CPC分类号： C03C13/00 , C03B37/0128 , C03C25/00
摘要： The specification describes the production of optical fibers and optical fiber preforms using Chemical Powder Deposition (CPD). In this process a slurry of silica powders and dopant powders in a liquid carrier is prepared and the inside surface of a silica glass starter tube is coated with the slurry, then dried. The coating is then consolidated and the tube collapsed as in the conventional MCVD process. Multiple coatings, and coatings with varying compositions, can be used to produce any desired profile. In an alternative embodiment, doped silica glass of the desired final composition is prepared, and then pulverized to form the powder for the slurry. In both embodiments, the use of powders of known composition in the slurry allows direct control over the final glass composition, as compared with conventional processes in which the composition in the final glass is indirectly controlled by control of the thermodynamics of a vapor phase reaction.
摘要翻译： 该规范描述了使用化学粉末沉积（CPD）制造光纤和光纤预制棒。 在该方法中，制备液体载体中的二氧化硅粉末和掺杂剂粉末的浆料，并且将石膏玻璃起始管的内表面涂覆有浆料，然后干燥。 然后将涂层固化，并且管如同传统的MCVD工艺那样折叠。 可以使用具有不同组成的多个涂层和涂层来产生任何所需的轮廓。 在替代实施例中，制备所需最终组成的掺杂二氧化硅玻璃，然后粉碎以形成用于浆料的粉末。 在两个实施方案中，与其中通过控制气相反应的热力学间接控制最终玻璃中的组成的常规方法相比，在浆料中使用已知组合物的粉末允许直接控制最终的玻璃组合物。
-
公开(公告)号：US07100400B2
公开(公告)日：2006-09-05
申请号：US10378769
申请日：2003-03-04
IPC分类号： C03B37/016 , C03C3/00
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：US06521156B1
公开(公告)日：2003-02-18
申请号：US09415746
申请日：1999-10-12
申请人： Jeffrey Linn Bream , George John Shevchuk , Philip Habbauer , Thomas Edward Stockert , John Burnette MacChesney
发明人： Jeffrey Linn Bream , George John Shevchuk , Philip Habbauer , Thomas Edward Stockert , John Burnette MacChesney
IPC分类号： B29C4708
CPC分类号： B29C47/34 , B29C47/0023
摘要： A tube take-up apparatus is provided to handle a length of freshly extruded tube. The apparatus includes an elongated housing in which a pair of parallel, spaced-apart rollers extend lengthwise in a position just below the extruded tubing. The housing is removably mounted on an elongated supporting fin which is secured to the extruder at its near end, extends upwardly between the two rollers and substantially along the entire length of the housing, and is, in turn, supported on a fixed pedestal at its remote end. After the full length of tubing has been extruded, the housing and rollers as a unit are lifted with the tube from the supporting fin and replaced by an empty housing, to extrude the next tube, while the full housing is carried away to a dryer.
摘要翻译： 提供了一种收管装置来处理一段新鲜挤出的管子。 该装置包括细长的壳体，一对平行的间隔开的辊子在刚好在挤压管道下方的位置上纵向延伸。 壳体可移除地安装在细长的支撑翅片上，该细长的支撑翅片在其近端固定到挤出机，在两个辊之间基本上沿着壳体的整个长度向上延伸，并且又在其上固定在固定基座上 远端。 在整个管道已经挤出之后，作为一个单元的外壳和滚子由管子从支撑翅片提升，并被一个空的壳体取代，以挤出下一个管子，同时将整个壳体带到干燥器上。
-
公开(公告)号：US06386002B1
公开(公告)日：2002-05-14
申请号：US08971460
申请日：1997-11-17
申请人： Suhas Dattatreya Bhandarkar , David Wilfred Johnson, Jr. , John Burnette MacChesney , Thomas Edward Stockert
发明人： Suhas Dattatreya Bhandarkar , David Wilfred Johnson, Jr. , John Burnette MacChesney , Thomas Edward Stockert
IPC分类号： C03B3716
CPC分类号： C01B33/1417 , C03C1/006
摘要： A silica-water dispersion suitable for use as a sol for sol-gel fabrication is produced from a silica-water mixture with addition of alkaline agent. The agent functions to increase viscosity so as to improve dispersing efficiency during shear mixing.
摘要翻译： 适合用作溶胶 - 凝胶制造的溶胶的二氧化硅 - 水分散体由添加碱性试剂的二氧化硅 - 水混合物制备。 该试剂的作用是提高粘度，以提高剪切混合时的分散效率。
-
公开(公告)号：US06571582B2
公开(公告)日：2003-06-03
申请号：US09838727
申请日：2001-04-19
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。
-
10.发明授权
公开(公告)号：US6080339A
公开(公告)日：2000-06-27
申请号：US097496
申请日：1998-06-15
申请人： Debra Anne Fleming , Philip Hubbauer , David Wilfred Johnson, Jr. , John Burnette MacChesney , Thomas Edward Stockert , Frederick W. Walz, Jr.
发明人： Debra Anne Fleming , Philip Hubbauer , David Wilfred Johnson, Jr. , John Burnette MacChesney , Thomas Edward Stockert , Frederick W. Walz, Jr.
IPC分类号： C03B8/02 , C03B19/12 , C03B20/00 , C03B37/012 , C04B35/14 , C04B35/624 , B29D11/00
CPC分类号： C04B35/14 , C03B19/12 , C04B35/624
摘要： The invention is a sol-gel extrusion process which allows fabrication of both thick and thin wall tubes. For example, the process is capable of preparing silica overcladding tubes in a manner easier than sol-gel casting processes, and also capable of preparing relatively thin substrate tubes, which are difficult to cast. According to the invention, a silica dispersion containing a stabilizing agent is provided, a gelling agent is added to the dispersion to induce gellation, and the resultant gel is extruded into a silica body, in the substantial absence of polymeric material from the gel. Substantially avoiding the inclusion of such polymeric material in overcladding and substrate tubes offers significant commercial advantages by reducing the time and energy required to remove organic materials from the tube bodies, by reducing environmental impact, and by reducing the amount of impurities introduced in the tubes.
摘要翻译： 本发明是一种溶胶 - 凝胶挤出方法，其允许制造厚壁和薄壁管。 例如，该方法能够以比溶胶 - 凝胶浇铸方法更容易的方式制备二氧化硅包覆管，并且还能够制备难以浇铸的相对薄的基材管。 根据本发明，提供含有稳定剂的二氧化硅分散体，向分散体中加入胶凝剂以引起凝胶化，并将所得凝胶挤出成二氧化硅体，基本上不存在来自凝胶的聚合材料。 通过减少从管体中除去有机材料所需的时间和能量，减少环境影响以及通过减少引入管中的杂质的量，基本上避免了这种聚合物材料在外包装和底物管中的包含。
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.013 秒)
