公开(公告)号：US06240748B1

公开(公告)日：2001-06-05

申请号：US09306470

申请日：1999-05-06

申请人： Danny L. Henderson ,  Ming-Jun Li ,  Daniel A. Nolan ,  Glenda R. Washburn

发明人： Danny L. Henderson ,  Ming-Jun Li ,  Daniel A. Nolan ,  Glenda R. Washburn

IPC分类号： C03B3712

CPC分类号： G02B6/02285 ,  C03B37/027 ,  C03B37/02745 ,  C03B37/03 ,  C03B37/032 ,  C03B2203/06 ,  C03B2203/18 ,  C03B2203/20 ,  C03B2203/36 ,  C03B2205/06

摘要： The invention provides improved methods for reducing polarization mode dispersion (PMD) in single mode fiber by spinning the fiber during the drawing process in accordance with a spin function having sufficient harmonic content to achieve low levels of PMD for commercial fibers for which the beat lengths of the fibers, including the beat lengths of different portions of the fibers, are variable and thus not readily known in advance. The spin functions of the invention take advantage of certain resonances in energy transfer between polarization modes to achieve substantial reductions in PMD for a wide range of beat lengths. Examples of suitable spin functions include frequency-modulated and amplitude-modulated sine waves.

摘要翻译： 本发明提供了通过根据具有足够的谐波含量的自旋函数在拉伸过程中纺丝纤维来实现单模光纤中的偏振模色散（PMD）的改进方法，以实现商业光纤的低水平的PMD， 包括纤维的不同部分的间隔的纤维是可变的，因此预先不容易知道。 本发明的自旋功能利用在极化模式之间的能量转移中的某些共振，以实现大范围的拍子长度的PMD的显着降低。 合适的自旋函数的实例包括频率调制和幅度调制的正弦波。

公开(公告)号：US5943466A

公开(公告)日：1999-08-24

申请号：US784574

申请日：1997-01-21

申请人： Danny L. Henderson ,  Ming-Jun Li ,  Daniel A. Nolan ,  Glenda R. Washburn

发明人： Danny L. Henderson ,  Ming-Jun Li ,  Daniel A. Nolan ,  Glenda R. Washburn

IPC分类号： G02B6/00 ,  C03B37/027 ,  C03B37/03 ,  G02B6/02 ,  G02B6/024

CPC分类号： G02B6/02285 ,  C03B37/027 ,  C03B37/02745 ,  C03B37/03 ,  C03B37/032 ,  C03B2203/06 ,  C03B2203/18 ,  C03B2203/20 ,  C03B2203/36 ,  C03B2205/06

摘要： The invention provides improved methods for reducing polarization mode dispersion (PMD) in single mode fiber by spinning the fiber during the drawing process in accordance with a spin function having sufficient harmonic content to achieve low levels of PMD for commercial fibers for which the beat lengths of the fibers, including the beat lengths of different portions of the fibers, are variable and thus not readily known in advance. The spin functions of the invention take advantage of certain resonances in energy transfer between polarization modes to achieve substantial reductions in PMD for a wide range of beat lengths. Examples of suitable spin functions include frequency-modulated and amplitude-modulated sine waves.

摘要翻译： 本发明提供了通过根据具有足够的谐波含量的自旋函数在拉伸过程中纺丝纤维来实现单模光纤中的偏振模色散（PMD）的改进方法，以实现商业光纤的低水平的PMD， 包括纤维的不同部分的间隔的纤维是可变的，因此预先不容易知道。 本发明的自旋功能利用在极化模式之间的能量转移中的某些共振，以实现大范围的拍子长度的PMD的显着降低。 合适的自旋函数的实例包括频率调制和幅度调制的正弦波。

公开(公告)号：US5879649A

公开(公告)日：1999-03-09

申请号：US926254

申请日：1997-09-05

申请人： Danny L. Henderson ,  Dale R. Powers

发明人： Danny L. Henderson ,  Dale R. Powers

IPC分类号： C03B19/14 ,  C03B37/014 ,  C03C3/06 ,  C07F7/20 ,  C07F7/21 ,  C01B33/12

CPC分类号： C03B37/01413 ,  C03B19/1415 ,  C03C3/06 ,  C07F7/20 ,  C07F7/21 ,  C03B2201/02 ,  C03B2207/32 ,  C03B2207/81 ,  C03B2207/87 ,  C03B2207/88 ,  C03B2207/89 ,  C03B2207/90 ,  C03C2201/02 ,  C03C2203/27

摘要： The present invention is directed to a purified polyalkylsiloxane composition having a boiling point, under atmospheric conditions, of less than about 250.degree. C. and containing high boiling impurities, including siloxanes and silanol-terminated siloxanes, that have boiling points, under atmospheric conditions, of greater than about 250.degree. C. in a total concentration of less than 14 ppm. The present invention is further directed to a method of producing a purified polyalkylsiloxane composition, having a boiling point, under atmospheric conditions, of less than about 250.degree. C., by distilling a polyalkylsiloxane starting material containing high boiling impurities having boiling points, under atmospheric conditions, of greater than about 250.degree. C. in a total concentration of at least 14 ppm, under conditions effective to produce a purified polyalkylsiloxane composition having a boiling point under atmospheric conditions of less than about 250.degree. C., and containing high boiling impurities, having boiling points, under atmospheric conditions, of greater than about 250.degree. C., in a total concentration of less than 14 ppm. In preferred embodiments, low boiling components (including silanols and preferably also hexamethylcyclotrisiloxane) are reduced to less than about 100 ppm. The present invention is further directed to a method of producing fused silica glass by conversion of the purified polyalkylsiloxane composition.

摘要翻译： 本发明涉及一种纯化的聚烷基硅氧烷组合物，其在大气条件下沸点低于约250℃，并且在大气条件下含有沸点高的沸点杂质，包括硅氧烷和硅烷醇封端的硅氧烷， 大于约250℃，总浓度小于14ppm。 本发明还涉及通过在大气压下蒸馏含有沸点高沸点杂质的聚烷基硅氧烷起始材料，在大气条件下制备小于约250℃沸点的纯化聚烷基硅氧烷组合物的方法 条件，大于约250℃，总浓度为至少14ppm，在有效产生在大气条件下沸点小于约250℃的纯化聚烷基硅氧烷组合物的条件下，并含有高沸点杂质 在大气条件下具有大于约250℃的沸点，总浓度小于14ppm。 在优选的实施方案中，低沸点组分（包括硅烷醇，优选六甲基环三硅氧烷）降低至小于约100ppm。 本发明还涉及通过纯化的聚烷基硅氧烷组合物的转化生产熔融石英玻璃的方法。

公开(公告)号：US5703191A

公开(公告)日：1997-12-30

申请号：US574961

申请日：1995-12-19

申请人： Danny L. Henderson ,  Dale R. Powers

发明人： Danny L. Henderson ,  Dale R. Powers

IPC分类号： G02B6/00 ,  C03B8/04 ,  C03B19/06 ,  C03B19/14 ,  C03B20/00 ,  C03B37/014 ,  C03B37/018 ,  C03C1/02 ,  C03C3/06 ,  C03C13/04 ,  C07F7/20 ,  C07F7/21 ,  C08G77/04 ,  C08L83/04 ,  C08G77/12

CPC分类号： C03B37/01413 ,  C03B19/1415 ,  C03C3/06 ,  C07F7/20 ,  C07F7/21 ,  C03B2201/02 ,  C03B2207/32 ,  C03B2207/85 ,  C03C2201/02 ,  C03C2203/27

摘要： The present invention is directed to a purified polyalkylsiloxane composition having a boiling point, under atmospheric conditions, of less than about 250.degree. C. and containing high boiling impurities, including siloxanes and silanol-terminated siloxanes, that have boiling points, under atmospheric conditions, of greater than about 250.degree. C. in a total concentration of less than 14 ppm. The present invention is further directed to a method of producing a purified polyalkylsiloxane composition, having a boiling point, under atmospheric conditions, of less than about 250.degree. C., by distilling a polyalkylsiloxane starting material containing high boiling impurities having boiling points, under atmospheric conditions, of greater than about 250.degree. C. in a total concentration of at least 14 ppm, under conditions effective to produce a purified polyalkylsiloxane composition having a boiling point under atmospheric conditions of less than about 250.degree. C., and containing high boiling impurities, having boiling points, under atmospheric conditions, of greater than about 250.degree. C., in a total concentration of less than 14 ppm. In preferred embodiments, low boiling components (including silanols and preferably also hexamethylcyclotrisiloxane) are reduced to less than about 100 ppm. The present invention is further directed to a method of producing fused silica glass by conversion of the purified polyalkylsiloxane composition.

摘要翻译： 本发明涉及一种纯化的聚烷基硅氧烷组合物，其在大气条件下沸点低于约250℃，并且在大气条件下含有沸点高的沸点杂质，包括硅氧烷和硅烷醇封端的硅氧烷， 大于约250℃，总浓度小于14ppm。 本发明进一步涉及通过在大气压下蒸馏含有沸点高沸点杂质的聚烷基硅氧烷原料，制备在大气条件下沸点低于约250℃的纯化聚烷基硅氧烷组合物的方法 条件，大于约250℃，总浓度为至少14ppm，在有效产生在大气条件下沸点小于约250℃的纯化聚烷基硅氧烷组合物的条件下，并含有高沸点杂质 在大气条件下具有大于约250℃的沸点，总浓度小于14ppm。 在优选的实施方案中，低沸点组分（包括硅烷醇，优选六甲基环三硅氧烷）降低至小于约100ppm。 本发明还涉及通过纯化的聚烷基硅氧烷组合物的转化生产熔融石英玻璃的方法。

公开(公告)号：US06565823B1

公开(公告)日：2003-05-20

申请号：US08767653

申请日：1996-12-17

申请人： Daniel W. Hawtof ,  Danny L. Henderson ,  Greg E. Smith ,  Eric H. Urruti

发明人： Daniel W. Hawtof ,  Danny L. Henderson ,  Greg E. Smith ,  Eric H. Urruti

IPC分类号： C01B3312

CPC分类号： B01J19/26 ,  B01J2219/00157 ,  B01J2219/00159 ,  C01B33/183 ,  C03B19/1415 ,  C03B19/1423 ,  C03B37/01413 ,  C03B37/0142 ,  C03B2207/06 ,  C03B2207/14 ,  C03B2207/20 ,  C03B2207/32 ,  C03B2207/34 ,  C03B2207/42 ,  C03B2207/80 ,  C03C1/00 ,  C03C3/06 ,  C03C2201/06 ,  C03C2203/40 ,  Y02P40/57

摘要： The present invention is directed to a method for making fused silica glass. A liquid, preferably halide-free, silicon-containing compound capable of being converted by thermal oxidative decomposition to SiO2 is provided and introduced directly into the flame of a combustion burner, thereby forming finely divided amorphous soot. The amorphous soot is deposited on a receptor surface where, either substantially simultaneously with or subsequently to its deposition, the soot is consolidated into a body of fused silica glass. The invention further relates to an apparatus for forming fused silica from liquid, preferably halide-free, silicon-containing reactants which includes: a combustion burner which, in operation, generates a flame; an injector for supplying a liquid silicon-containing compound to the flame to convert the compound by thermal oxidative decomposition to a finely divided amorphous soot; and a receptor surface on which the soot is deposited.

摘要翻译： 本发明涉及制造熔融石英玻璃的方法。 提供能够通过热氧化分解转化为SiO 2的液体，优选不含卤素的含硅化合物，并将其直接引入燃烧器的火焰中，由此形成细碎的无定形烟灰。 无定形烟灰沉积在受体表面上，其中基本上同时或随后沉积，烟灰被固结成熔融石英玻璃体。 本发明还涉及一种用于从液体形成熔融二氧化硅的设备，优选不含卤素的含硅反应物，其包括：在操作中产生火焰的燃烧器; 用于向火焰供应液体含硅化合物以通过热氧化分解将化合物转化为细碎的无定形烟灰的注射器; 以及沉积有烟灰的受体表面。

公开(公告)号：US5979185A

公开(公告)日：1999-11-09

申请号：US89869

申请日：1998-06-03

申请人： Jeffery L. Blackwell ,  Xiaodong Fu ,  Daniel W. Hawtof ,  Danny L. Henderson

发明人： Jeffery L. Blackwell ,  Xiaodong Fu ,  Daniel W. Hawtof ,  Danny L. Henderson

IPC分类号： C03B20/00 ,  C01B33/18 ,  C03B8/02 ,  C03B19/14 ,  C03B37/014

CPC分类号： C03B37/01413 ,  C01B33/18 ,  C03B19/1423 ,  C03B37/0142 ,  C03B2207/06 ,  C03B2207/14 ,  C03B2207/20 ,  C03B2207/32 ,  C03B2207/34 ,  C03B2207/46 ,  C03B2207/80 ,  Y02P40/57

摘要： The present invention is directed to a method for making silica glass and silica glass preforms. A liquid, preferably halide-free, silicon-containing compound capable of being converted by thermal oxidative decomposition to SiO.sub.2 is provided and introduced directly into the flame of a combustion burner, which converts the compound to silica, thereby forming finely divided amorphous soot. The soot is vaporized proximate the site where the liquid is converted into silica glass by atomizing the liquid, preferably with a stream of atomizing gas. A heater proximate the burner face and around the burner flame increases soot capture rate and allows for a reduction of the velocity of the atomizing gas. The amorphous soot is deposited on a receptor surface where, either substantially simultaneously with or subsequently to its deposition, the soot is consolidated into a body of fused silica glass.

摘要翻译： 本发明涉及一种制造石英玻璃和石英玻璃预制件的方法。 提供能够通过热氧化分解转化为SiO 2的液体，优选不含卤素的含硅化合物，并将其直接引入燃烧器的火焰中，该燃烧器将该化合物转化为二氧化硅，从而形成细碎的无定形烟灰。 烟灰在靠近液体被转化成石英玻璃的位置附近被气化，优选用雾化气流雾化液体。 靠近燃烧器表面和燃烧器火焰附近的加热器增加烟灰捕获速率，并允许降低雾化气体的速度。 无定形烟灰沉积在受体表面上，其中基本上同时或随后沉积，烟灰被固结成熔融石英玻璃体。