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    Process for solution-doping of optical fiber preforms
    143.
    发明申请
    Process for solution-doping of optical fiber preforms 审中-公开
    光纤预制棒的溶液掺杂工艺

    公开(公告)号：US20030213268A1

    公开(公告)日：2003-11-20

    申请号：US10213830

    申请日：2002-08-06

    Inventor： Daniel Scott Homa

    IPC: C03B037/018

    CPC classification number: C03B37/01838 ,  C03B2201/36

    Abstract: A method for producing an optical fiber preform is disclosed. The fiber core is solution-doped with a high dopant concentration of an index modifier, preferably aluminum. High aluminum concentrations can be achieved without incorporating phosphorus in the core.

    Abstract translation: 公开了一种用于制造光纤预制棒的方法。 纤维芯溶液掺杂有高掺杂浓度的指数调节剂，优选铝。 可以在不在铁芯中掺入磷的情况下实现高铝浓度。

    Method of fabricating rare earth doped optical fibre
    144.
    发明申请
    Method of fabricating rare earth doped optical fibre 有权
    稀土掺杂光纤的制造方法

    公开(公告)号：US20030182970A1

    公开(公告)日：2003-10-02

    申请号：US10106868

    申请日：2002-03-27

    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH

    Inventor： Ranjan Sen ,  Mrinmay Pal ,  Mukul Chandra Paul ,  Shyamal Kumar Bhadra ,  Somesh Chatterjee ,  Kamal Dasgupta

    IPC: C03B037/075

    CPC classification number: C03B37/01807 ,  C03B37/01838 ,  C03B37/01853 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/36

    Abstract: The present invention provides a method of fabricating rare earth doped preforms and optical fibres by a combination of modified chemical vapour deposition (MCVD) process and solution doping technique said MCVD process is used to develop matched or depressed clad structure inside a silica glass substrate tube followed by deposition of porous silica soot layer containing GeO2, P2O5 or such refractive index modifiers by the backward deposition method for formation of the core and presintering the deposited particulate layer by backward pass with flow of GeCl4 and/or corresponding dopant halides, soaking the porous soot layer into an alcoholic/aqueous solution of RE-salts containing codopants such as AlCl3 in definite proportion, drying, oxidation, dehydration and sintering of the RE containing porous deposit and by collapsing at a high temperature to produce the preform followed by drawing the fibres by known technique to produce fibres with suitable core-clad dimensions and geometry.

    Abstract translation: 本发明提供了一种通过改进的化学气相沉积（MCVD）工艺和溶液掺杂技术的组合制造稀土掺杂的预成型件和光纤的方法，所述MCVD工艺用于在石英玻璃衬底管内开发匹配或凹陷的包层结构，随后 通过用于形成芯的反向沉积方法沉积含有GeO 2，P 2 O 5或这种折射率改性剂的多孔二氧化硅烟灰层，并通过GeCl 4和/或相应的掺杂剂卤化物的流动反向通过沉积的颗粒层，浸泡多孔烟灰 将含有RE的多种沉积物的含RE的盐类，如AlCl 3的含水醇溶液/干燥，氧化，脱水和烧结，并在高温下收缩，制成预成型体，然后用纤维拉伸 已知的技术来生产具有合适的芯包层尺寸和几何形状的纤维。

    Method of forming an optical fiber
    147.
    发明授权
    Method of forming an optical fiber 有权
    形成光纤的方法

    公开(公告)号：US06523369B1

    公开(公告)日：2003-02-25

    申请号：US09766121

    申请日：2001-01-18

    Applicant: Ying-Hua Zhang ,  Brian M. Laliberte ,  Ray F. Robinson

    Inventor： Ying-Hua Zhang ,  Brian M. Laliberte ,  Ray F. Robinson

    IPC: C03B37018

    CPC classification number: C03C25/105 ,  C03B37/01807 ,  C03B37/01838 ,  C03B37/027 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2207/81 ,  C03B2207/90

    Abstract: A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low numerical aperture, low core attenuation, and high pumping power absorption. The high concentrations of rare earth dopant material are accomplished through either the “hybrid vapor processing” (HVP) method or a “hybrid liquid processing” (HLP) method, each capable of being practiced in combination or independently of one another. The HVP method involves the vaporization of a rare earth halogen by the exposure thereof to a sufficiently elevated temperature, independently, or contemporaneously with the transport of the resultant rare earth halogen laden vapor, into a glass forming oxidation reaction zone on a flowing stream of essentially an unreactive inert gas, such as helium. According to the HLP method, a first amount of rare earth dopant is provided according to the HVP method and/or other vapor source of rare earth dopant which is mixed with glass forming vapors to form a deposited soot layer on the internal surface of a glass tube. The soot-deposited tube is then impregnated with a dopant solution which may be formulated with a second amount of rare earth dopant. The tube is then thermally collapsed resulting in an optical preform with a an enhanced amount of incorporated first and second amounts of rare earth dopant.

    Abstract translation: 公开了一种用于制造具有相当高浓度的稀土掺杂剂材料的光纤预制件的方法和装置，因此可以将其拉制和加工成具有低数值孔径，低内核衰减和高的光纤 抽吸功率吸收。 高浓度的稀土掺杂剂材料通过“混合蒸气处理”（HVP）方法或“混合液体处理”（HLP）方法实现，每种方法可以彼此组合或独立地实施。 HVP方法包括通过将稀土卤素的蒸发独立地或同时地将所得的含稀土卤素的蒸汽输送到基本上流动的流动的玻璃形成氧化反应区中，将稀土卤素的蒸发蒸发到足够高的温度 非反应性惰性气体，例如氦气。 根据HLP方法，根据HVP法和/或稀土掺杂剂的其它蒸汽源与玻璃形成蒸气混合，提供第一量的稀土掺杂剂，以在玻璃的内表面上形成沉积的烟灰层 管。 然后将烟灰沉积管用掺杂剂溶液浸渍，掺杂剂溶液可以用第二量的稀土掺杂剂配制。 然后将管热收缩，导致具有增加量的掺入的第一和第二量的稀土掺杂剂的光学预制件。

    Method of forming a glass preform
    148.
    发明授权
    Method of forming a glass preform 失效
    形成玻璃预制件的方法

    公开(公告)号：US06490889B1

    公开(公告)日：2002-12-10

    申请号：US09745954

    申请日：2000-12-21

    Applicant: Ying-Hua Zhang ,  Brian M. Laliberte ,  Ray F. Robinson

    Inventor： Ying-Hua Zhang ,  Brian M. Laliberte ,  Ray F. Robinson

    IPC: C03B37075

    CPC classification number: C03C25/105 ,  C03B37/01807 ,  C03B37/01838 ,  C03B37/027 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2207/81 ,  C03B2207/90

    Abstract: A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low numerical aperture, low core attenuation, and high pumping power absorption. The high concentrations of rare earth dopant material are accomplished through either the “hybrid vapor processing” (HVP) method or a “hybrid liquid processing” (HLP) method, each capable of being practiced in combination or independently of one another. The HVP method involves the vaporization of a rare earth halogen by the exposure thereof to a sufficiently elevated temperature, independently, or contemporaneously with the transport of the resultant rare earth halogen laden vapor, into a glass forming oxidation reaction zone on a flowing stream of essentially an unreactive inert gas, such as helium. According to the HLP method, a first amount of rare earth dopant is provided according to the HVP method and/or other vapor source of rare earth dopant which is mixed with glass forming vapors to form a deposited soot layer on the internal surface of a glass tube. The soot-deposited tube is then impregnated with a dopant solution which may be formulated with a second amount of rare earth dopant. The tube is then thermally collapsed resulting in an optical preform with a an enhanced amount of incorporated first and second amounts of rare earth dopant.

    Abstract translation: 公开了一种用于制造具有相当高浓度的稀土掺杂剂材料的光纤预制件的方法和装置，因此可以将其拉制和加工成具有低数值孔径，低内核衰减和高的光纤 抽吸功率吸收。 高浓度的稀土掺杂剂材料通过“混合蒸气处理”（HVP）方法或“混合液体处理”（HLP）方法实现，每种方法可以彼此组合或独立地实施。 HVP方法包括通过将稀土卤素的蒸发独立地或同时地将所得的含稀土卤素的蒸汽输送到基本上流动的流动的玻璃形成氧化反应区中，将稀土卤素的蒸发蒸发到足够高的温度 非反应性惰性气体，例如氦气。 根据HLP方法，根据HVP法和/或稀土掺杂剂的其它蒸汽源与玻璃形成蒸气混合，提供第一量的稀土掺杂剂，以在玻璃的内表面上形成沉积的烟灰层 管。 然后将烟灰沉积管用掺杂剂溶液浸渍，掺杂剂溶液可以用第二量的稀土掺杂剂配制。 然后将管热收缩，导致具有增加量的掺入的第一和第二量的稀土掺杂剂的光学预型件。

    Rare earth and alumina-doped optical fiber preform process
    149.
    发明授权
    Rare earth and alumina-doped optical fiber preform process 有权
    稀土和氧化铝掺杂光纤预制棒工艺

    公开(公告)号：US06474106B1

    公开(公告)日：2002-11-05

    申请号：US09451175

    申请日：1999-11-30

    Applicant: Carl E. Crossland ,  Gang Qi

    Inventor： Carl E. Crossland ,  Gang Qi

    IPC: C03B37027

    CPC classification number: C03B37/0142 ,  C03B37/0124 ,  C03B37/01413 ,  C03B37/01446 ,  C03B37/027 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/36 ,  C03B2205/08 ,  C03B2207/66 ,  C03B2207/70 ,  C03B2207/85 ,  C03B2207/86 ,  C03B2207/87 ,  C03B2207/90

    Abstract: The present invention discloses novel methods for fabricating optical fiber glass preforms which may contain alumina, germania, erbium, or other rare earth metals as dopants. Doping with a higher concentration of alumina enhances the solubility of the erbium, or other rare earth, dopant within the glass and the resultant optical properties of the fiber. However, the addition of an alumina dopant can cause processing difficulties due to the formation of inclusions, such as gas bubble, seeds or crystallite formation, within the glass preform or glass cane. The present invention overcomes these processing difficulties and produces glass preforms or canes that are inclusion-free.

    Abstract translation: 本发明公开了可以含有氧化铝，锗，铒或其它稀土金属作为掺杂剂的光纤玻璃预制件的制造方法。 用较高浓度的氧化铝掺杂增强了玻璃内的铒或其他稀土掺杂剂的溶解度以及所得的纤维的光学性质。 然而，添加氧化铝掺杂剂可能由于在玻璃预成型件或玻璃棒内形成夹杂物，例如气泡，种子或微晶形成而导致加工困难。 本发明克服了这些加工困难，并且生产了不含夹杂物的玻璃预制件或者手杖。

    Method of manufacturing an optical fiber preform
    150.
    发明申请
    Method of manufacturing an optical fiber preform 审中-公开
    制造光纤预制棒的方法

    公开(公告)号：US20020088252A1

    公开(公告)日：2002-07-11

    申请号：US09764648

    申请日：2001-01-17

    Inventor： Ying-Hua Zhang ,  Brian M. Laliberte ,  Ray F. Robinson

    IPC: C03B037/075

    CPC classification number: C03C25/105 ,  C03B37/01807 ,  C03B37/01838 ,  C03B37/027 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2207/81 ,  C03B2207/90

    Abstract: A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low numerical aperture, low core attenuation, and high pumping power absorption. The high concentrations of rare earth dopant material are accomplished through either the nullhybrid vapor processingnull (HVP) method or a nullhybrid liquid processingnull (HLP) method, each capable of being practiced in combination or independently of one another. The HVP method involves the vaporization of a rare earth halogen by the exposure thereof to a sufficiently elevated temperature, independently, or contemporaneously with the transport of the resultant rare earth halogen laden vapor, into a glass forming oxidation reaction zone on a flowing stream of essentially an unreactive inert gas, such as helium. According to the HLP method, a first amount of rare earth dopant is provided according to the HVP method and/or other vapor source of rare earth dopant which is mixed with glass forming vapors to form a deposited soot layer on the internal surface of a glass tube. The soot-deposited tube is then impregnated with a dopant solution which may be formulated with a second amount of rare earth dopant. The tube is then thermally collapsed resulting in an optical preform with a an enhanced amount of incorporated first and second amounts of rare earth dopant.

    Abstract translation: 公开了一种用于制造具有相当高浓度的稀土掺杂剂材料的光纤预制件的方法和装置，因此可以将其拉制和加工成具有低数值孔径，低内核衰减和高的光纤 抽吸功率吸收。 高浓度的稀土掺杂剂材料通过“混合蒸气处理”（HVP）方法或“混合液体处理”（HLP）方法实现，每种方法可以彼此组合或独立地实施。 HVP方法包括通过将稀土卤素的蒸发独立地或同时地将所得的含稀土卤素的蒸汽输送到基本上流动的流动的玻璃形成氧化反应区中，将稀土卤素的蒸发蒸发到足够高的温度 非反应性惰性气体，例如氦气。 根据HLP方法，根据HVP法和/或稀土掺杂剂的其它蒸汽源与玻璃形成蒸气混合，提供第一量的稀土掺杂剂，以在玻璃的内表面上形成沉积的烟灰层 管。 然后将烟灰沉积管用掺杂剂溶液浸渍，掺杂剂溶液可以用第二量的稀土掺杂剂配制。 然后将管热收缩，导致具有增加量的掺入的第一和第二量的稀土掺杂剂的光学预型件。

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