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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
    2.
    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.

    Amplitude tunable filter
    5.
    发明授权
    Amplitude tunable filter 失效
    幅度可调滤波器

    公开(公告)号：US06697541B1

    公开(公告)日：2004-02-24

    申请号：US09569647

    申请日：2000-05-12

    申请人： Gang Chen ,  Steven B. Dawes ,  Glenn E. Kohnke ,  Laura A. Weller-Brophy

    发明人： Gang Chen ,  Steven B. Dawes ,  Glenn E. Kohnke ,  Laura A. Weller-Brophy

    IPC分类号： G02F1295

    CPC分类号： G02B6/02204 ,  G02B6/02095

    摘要： A dynamically tunable filter controls the magnitude of couplings between core and cladding modes of a waveguide by surrounding the waveguide with an overcladding having an adjustable refractive index. The coupled modes are attenuated along the core to produce the desired spectral response. The adjustment to the overcladding index is made in a range that is above the refractive index of the underlying cladding to vary amplitudes of attenuated bands of wavelengths without shifting central wavelengths of the bands.

    摘要翻译： 动态可调滤波器通过用具有可调折射率的外包围围绕波导来控制波导的芯和包层模式之间的耦合的大小。 耦合模式沿核心被衰减以产生期望的光谱响应。 对包层指数的调整在高于基底包层的折射率的范围内进行，以改变衰减的波长带的幅度，而不会移动带的中心波长。

    Thermally tunable optical devices
    6.
    发明授权
    Thermally tunable optical devices 有权
    热可调光学器件

    公开(公告)号：US06411746B1

    公开(公告)日：2002-06-25

    申请号：US09484491

    申请日：2000-01-18

    申请人： Darol Chamberlain ,  Gang Chen ,  Steven B. Dawes ,  Peter J. McNeilly ,  Mike X. Ouyang ,  Laura A. Weller-Brophy

    发明人： Darol Chamberlain ,  Gang Chen ,  Steven B. Dawes ,  Peter J. McNeilly ,  Mike X. Ouyang ,  Laura A. Weller-Brophy

    IPC分类号： G02F1035

    CPC分类号： G02F1/0147 ,  G02F1/0115 ,  G02F2201/307 ,  G05D23/24

    摘要： The present invention relates to a tunable optical device 10 that includes an optical fiber device 12 having optical properties that vary with temperature and a heater 14. The heater 14 is thermally coupled to the optical fiber device 12. The heater 14 includes a metal layer 18 and two electrical contacts 20, 22 that are electrically connected to the metal layer 18. The electrical contacts 20, 22 are spaced apart from one another along the metal layer 18. The electrical resistance of the portion of the metal layer 18 between the contacts 20, 22 varies with temperature and serves as a resistive heater. The invention also includes a controller 16 that is electrically connected to the heater 14. The controller 16 provides electrical power to the heater 14 and measures the electrical voltage across the heater 14. The controller 16 compares the measured electrical voltage to a pre-selected reference value. The controller then regulates the amount of electrical current supplied to the heater 14. By regulating the amount of electrical current supplied to the heater 14 the temperature of the heater 14 is controlled.

    摘要翻译： 本发明涉及一种可调谐光学器件10，其包括具有随温度变化的光学特性的光纤器件12和加热器14.加热器14热耦合到光纤器件12.加热器14包括金属层18 以及电连接到金属层18的两个电触点20,22.电触点20,22沿着金属层18彼此间隔开。金属层18在触点20之间的电阻 ，22随温度变化，用作电阻加热器。 本发明还包括电连接到加热器14的控制器16.控制器16向加热器14提供电力并测量加热器14两端的电压。控制器16将测得的电压与预选参考值进行比较 值。 然后，控制器调节供应给加热器14的电流量。通过调节供应给加热器14的电流量，控制加热器14的温度。

    Optical fiber component with shaped optical element and method of making same
    10.
    发明授权
    Optical fiber component with shaped optical element and method of making same 失效
    具有成形光学元件的光纤部件及其制造方法

    公开(公告)号：US06488414B1

    公开(公告)日：2002-12-03

    申请号：US09494073

    申请日：2000-01-28

    申请人： Steven B. Dawes ,  Robert J. Hagerty

    发明人： Steven B. Dawes ,  Robert J. Hagerty

    IPC分类号： G02B636

    CPC分类号： G02B6/262 ,  G02B6/241 ,  G02B6/32 ,  G02B6/4203 ,  G02B6/4206 ,  Y10S977/827

    摘要： A method of making an in situ shaped optical element on the terminal end of an optical fiber, and the resultant optical fiber component for manipulating light entering or exiting the terminal end of an optical fiber. The in situ shaped optical element is preferably an inorganic-organic hybrid sol-gel material which is adhered to the terminal end of the optical fiber and shaped in place to define an optical element or surface.

    摘要翻译： 一种在光纤的终端上制造原位成形的光学元件的方法，以及用于操纵进入或离开光纤终端的光的所得光纤部件。 原位成形的光学元件优选是无机 - 有机杂化溶胶 - 凝胶材料，其粘附到光纤的终端并成形到适当位置以限定光学元件或表面。