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    Method of forming optical fiber preforms
    1.
    发明授权
    Method of forming optical fiber preforms 有权
    形成光纤预制棒的方法

    公开(公告)号：US07089766B2

    公开(公告)日：2006-08-15

    申请号：US11034359

    申请日：2005-01-10

    申请人： Gerald E. Burke ,  Steven B. Dawes ,  V. Srikant ,  Pushkar Tandon

    发明人： Gerald E. Burke ,  Steven B. Dawes ,  V. Srikant ,  Pushkar Tandon

    IPC分类号： C03B37/018 ,  C03B37/029

    CPC分类号： G03F7/70216 ,  C03B19/1407 ,  C03B19/1415 ,  C03B19/1423 ,  C03B19/1453 ,  C03B37/01202 ,  C03B37/01406 ,  C03B37/01413 ,  C03B37/0142 ,  C03B37/0146 ,  C03B2201/12 ,  C03B2203/22 ,  C03B2207/02 ,  C03B2207/06 ,  C03B2207/08 ,  C03B2207/14 ,  C03B2207/20 ,  C03B2207/30 ,  C03B2207/38 ,  C03B2207/40 ,  C03B2207/42 ,  C03B2207/46 ,  C03B2207/54 ,  C03B2207/70 ,  C03B2207/81 ,  C03C3/06 ,  C03C2201/12 ,  C03C2201/20 ,  C03C2201/23 ,  C03C2201/30 ,  C03C2201/32 ,  F23D14/22 ,  F23D14/32 ,  G03F1/60 ,  G03F7/70958

    摘要： Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphere, removing water from the transport process, or combinations thereof. In a first embodiment, substantially water-free soot, preforms or glass are achieved by using a hydrogen-free fuel, such as carbon monoxide, in the deposition process. In another embodiment, a soot producing burner has parameters that enable operation on a substantially hydrogen-free fuel. End burners, which minimize water production, are also described. Such water-free methods are useful in depositing fluorine-doped soot because of the low water present and the efficiency in which fluorine is incorporated. In another embodiment, glassy barrier layer methods and apparatus are described for minimizing dopant migration, especially fluorine. Laser and induction methods and apparatus for forming the barrier layer are depicted. A chlorine, fluorine and silica precursor, such as chlorofluorosilane, may be utilized to form fluorinated soot. Other methods and apparatus are directed to combinations of conventional and substantially water-free processes. One embodiment is directed to combustion enhancing additives for addition to the substantially hydrogen-free fuels. The methods and apparatus in accordance with the invention are particularly useful for producing photomask substrates and optical fiber preforms.

    摘要翻译： 用于生产基本上无水的二氧化硅烟灰，预成型件和玻璃的方法，装置和前体。 该方法和装置通过除去水作为反应产物，从大气中除去水分，从运输过程中除去水或其组合，从而使基本上无水的熔融二氧化硅预制件或玻璃。 在第一实施方案中，在沉积工艺中通过使用无氢燃料如一氧化碳来实现基本上无水的烟灰，预型体或玻璃。 在另一个实施方案中，产生烟灰的燃烧器具有能够在基本上无氢燃料上操作的参数。 还描述了最小化水的生产的终端燃烧器。 这种无水方法由于存在低的水和掺入氟的效率而用于沉积氟掺杂烟灰。 在另一个实施例中，描述了用于最小化掺杂剂迁移，特别是氟的玻璃状阻挡层方法和装置。 描述了用于形成阻挡层的激光和感应方法和装置。 可以使用氯，氟和二氧化硅前体，例如氯氟硅烷来形成氟化烟灰。 其它方法和装置涉及常规和基本无水方法的组合。 一个实施方案涉及用于加入基本上无氢燃料的燃烧增强添加剂。 根据本发明的方法和装置特别适用于制造光掩模基片和光纤预制棒。

    Fluorine doping a soot preform
    3.
    发明授权
    Fluorine doping a soot preform 失效
    氟掺杂烟炱预制件

    公开(公告)号：US06813907B2

    公开(公告)日：2004-11-09

    申请号：US09999553

    申请日：2001-11-30

    申请人： Steven B. Dawes ,  William W. Johnson ,  Jason A. LaCoe ,  Michael T. Murtagh ,  Pushkar Tandon

    发明人： Steven B. Dawes ,  William W. Johnson ,  Jason A. LaCoe ,  Michael T. Murtagh ,  Pushkar Tandon

    IPC分类号： C03B37075

    CPC分类号： C03B37/01446 ,  C03B37/0148 ,  C03B2201/12 ,  C03B2207/52

    摘要： The invention includes a method of incorporating fluorine into a preform that may be used to produce an optical article. A method that may be used to practice the invention includes a method of making an optical fiber preform. The method includes reacting a fluorine containing precursor in a flame of a combustion burner without forming a soot, thereby forming a fluorine doping atmosphere. A further method that may be practiced to practice the invention includes the step reacting at least a fluorine containing precursor in a flame of a combustion burner, wherein the precursors reacted in the flame are substantially devoid of the element of silicon, thereby forming a fluorine containing atmosphere for the doping of a soot preform. An additional method that may be used to practice the invention includes the step of reacting at least one precursor in the flame of a combustion burner, wherein said precursors comprise at least one fluorine containing compound and the precursors are substantially free of any silicon containing compound, and the additional step of directing a reaction product of said reacting step toward a soot preform.

    Substantially dry, silica-containing soot, fused silica and optical fiber soot preforms, apparatus, methods and burners for manufacturing same
    5.
    发明申请
    Substantially dry, silica-containing soot, fused silica and optical fiber soot preforms, apparatus, methods and burners for manufacturing same 审中-公开
    基本干燥的含二氧化硅的烟灰，熔融石英和光纤烟炱预制件，用于制造相同材料的装置，方法和燃烧器

    公开(公告)号：US20050120752A1

    公开(公告)日：2005-06-09

    申请号：US11033001

    申请日：2005-01-10

    申请人： John Brown ,  Lisa Chacon ,  Steven Dawes ,  V. Srikant ,  Pushkar Tandon ,  Joseph Whalen

    发明人： John Brown ,  Lisa Chacon ,  Steven Dawes ,  V. Srikant ,  Pushkar Tandon ,  Joseph Whalen

    IPC分类号： C03B19/14 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018

    CPC分类号： C03C3/06 ,  C03B19/1407 ,  C03B19/1415 ,  C03B19/1423 ,  C03B19/1453 ,  C03B37/01202 ,  C03B37/01406 ,  C03B37/01413 ,  C03B37/0142 ,  C03B37/0146 ,  C03B2201/12 ,  C03B2203/22 ,  C03B2207/02 ,  C03B2207/06 ,  C03B2207/08 ,  C03B2207/14 ,  C03B2207/20 ,  C03B2207/30 ,  C03B2207/42 ,  C03B2207/70 ,  C03B2207/81

    摘要： Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphere, removing water from the transport process, or combinations thereof. In a first embodiment, substantially water-free soot, preforms or glass are achieved by using a hydrogen-free fuel, such as carbon monoxide, in the deposition process. In another embodiment, a soot producing burner has parameters that enable operation on a substantially hydrogen-free fuel. End burners, which minimize water production, are also described. Such water-free methods are useful in depositing fluorine-doped soot because of the low water present and the efficiency in which fluorine is incorporated. In another embodiment, glassy barrier layer methods and apparatus are described for minimizing dopant migration, especially fluorine. Laser and induction methods and apparatus for forming the barrier layer are depicted. A chlorine, fluorine and silica precursor, such as chlorofluorosilane, may be utilized to form fluorinated soot. Other methods and apparatus are directed to combinations of conventional and substantially water-free processes. One embodiment is directed to combustion enhancing additives for addition to the substantially hydrogen-free fuels. The methods and apparatus in accordance with the invention are particularly useful for producing photomask substrates and optical fiber preforms.

    摘要翻译： 用于生产基本上无水的二氧化硅烟灰，预成型件和玻璃的方法，装置和前体。 该方法和装置通过除去水作为反应产物，从大气中除去水分，从运输过程中除去水或其组合，从而使基本上无水的熔融二氧化硅预制件或玻璃。 在第一实施方案中，在沉积工艺中通过使用无氢燃料如一氧化碳来实现基本上无水的烟灰，预型体或玻璃。 在另一个实施方案中，产生烟灰的燃烧器具有能够在基本上无氢燃料上操作的参数。 还描述了最小化水的生产的终端燃烧器。 这种无水方法由于存在低的水和掺入氟的效率而用于沉积氟掺杂烟灰。 在另一个实施例中，描述了用于最小化掺杂剂迁移，特别是氟的玻璃状阻挡层方法和装置。 描述了用于形成阻挡层的激光和感应方法和装置。 可以使用氯，氟和二氧化硅前体，例如氯氟硅烷来形成氟化烟灰。 其它方法和装置涉及常规和基本无水方法的组合。 一个实施方案涉及用于加入基本上无氢燃料的燃烧增强添加剂。 根据本发明的方法和装置特别适用于制造光掩模基片和光纤预制棒。

    METHODS FOR FORMING OPTICAL FIBER PREFORMS WITH SELECTIVE DIFFUSION LAYERS
    9.
    发明申请
    METHODS FOR FORMING OPTICAL FIBER PREFORMS WITH SELECTIVE DIFFUSION LAYERS 审中-公开
    用选择性扩散层形成光纤预制件的方法

    公开(公告)号：US20140174133A1

    公开(公告)日：2014-06-26

    申请号：US14107259

    申请日：2013-12-16

    申请人： Amanda Lee Billings ,  Liam Ruan de Paor ,  Robert Brett Desorcie ,  Robert Arnold Knowlton ,  Pushkar Tandon

    发明人： Amanda Lee Billings ,  Liam Ruan de Paor ,  Robert Brett Desorcie ,  Robert Arnold Knowlton ,  Pushkar Tandon

    IPC分类号： C03B37/014 ,  G02B6/036

    CPC分类号： C03B37/01446 ,  C03B37/014 ,  C03B37/01413 ,  C03B37/01453 ,  C03B2201/08 ,  C03B2201/20 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2203/22 ,  C03B2207/36 ,  G02B6/036

    摘要： Methods for forming optical fiber preforms are disclosed. According to one embodiment, a method for forming an optical fiber preform includes forming a preform core portion from silica-based glass soot. The silica-based glass soot may include at least one dopant species for altering an index of refraction of the preform core portion. A selective diffusion layer of silica-based glass soot may be formed around the preform core portion to form a soot preform. The selective diffusion layer may have an as-formed density greater than the density of the preform core portion. A diffusing species may be diffused through the selective diffusion layer into the preform core portion. The soot preform may be sintered such that the selective diffusion layer has a barrier density which is greater than the as-formed density and the selective diffusion layer prevents diffusion of the at least one dopant species through the selective diffusion layer.

    摘要翻译： 公开了形成光纤预制棒的方法。 根据一个实施例，用于形成光纤预制棒的方法包括从二氧化硅基玻璃烟炱形成预制芯部分。 二氧化硅基玻璃烟炱可以包括至少一种用于改变预制核心部分的折射率的掺杂物种类。 二氧化硅基玻璃烟炱的选择性扩散层可以在预制核心部分周围形成，以形成烟炱预制件。 选择性扩散层可以具有大于预制核心部分的密度的形成密度。 扩散物质可以通过选择性扩散层扩散到预制核心部分中。 烟炱预制件可以烧结，使得选择性扩散层具有大于形成密度的势垒密度，并且选择性扩散层防止至少一种掺杂剂物质通过选择性扩散层的扩散。

    Low bend loss optical fiber
    10.
    发明授权
    Low bend loss optical fiber 有权
    低弯曲损耗光纤

    公开(公告)号：US08666214B2

    公开(公告)日：2014-03-04

    申请号：US13680676

    申请日：2012-11-19

    申请人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

    发明人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

    IPC分类号： G02B6/02 ,  G02B6/028 ,  G02B6/032 ,  G02B6/10

    CPC分类号： G02B6/028 ,  G02B6/02266 ,  G02B6/0281 ,  G02B6/0283 ,  G02B6/0285 ,  G02B6/0286 ,  G02B6/03627 ,  G02B6/03638 ,  G02B6/0365

    摘要： One embodiment of a single mode optical fiber includes: a graded index central core region having outer radius r1 and relative refractive index Δ1; a cladding region comprising (i) a first inner cladding region having an outer radius r2 10 microns and comprising a minimum relative refractive index Δ3, wherein said second inner cladding region has at least one region with a relative refractive index delta that becomes more negative with increasing radius; and (iii) an outer cladding region surrounding the second inner cladding region and comprising relative refractive index Δ4, wherein Δ1>Δ2>Δ3, Δ3

    摘要翻译： 单模光纤的一个实施例包括：具有外半径r1和相对折射率Delta1的渐变折射率中心纤芯区域; 包层区域，包括（i）具有外半径r2 <10微米和相对折射率Delta2和0.65 @ r1 / r2 @ 1的第一内包层区域; （ii）和具有外径r3> 10微米并且包括最小相对折射率Delta3的第二内包层区域（即，沟槽），其中所述第二内包层区域具有至少一个具有相对折射率Δδ的区域， 半径越来越大; 和（iii）围绕第二内包层区域并包括相对折射率Delta4的外包层区域，其中Delta1> Delta2> Delta3，Delta3Δ4。