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1. 发明授权

US06238462B1 Methods for the separation of compounds from acidic aqueous solutions 有权
标题翻译：从酸性水溶液中分离化合物的方法
公开(公告)号：US06238462B1
公开(公告)日：2001-05-29
申请号：US09353202
申请日：1999-07-14
申请人： Steven A. Dunwoody , Lei Jiang , Dale R. Powers , Freddie G. Prince
发明人： Steven A. Dunwoody , Lei Jiang , Dale R. Powers , Freddie G. Prince
IPC分类号： B01D5314
CPC分类号： B01D53/64 , C03B19/1446 , C03B37/0144 , C03B37/01846 , C03B2201/31
摘要： A method is disclosed for recovering germanium from a gaseous mixture which includes a germanium-containing compound in vapor or particulate form, acid in vapor form, and water vapor. The gaseous mixture is contacted with a liquid containing water under conditions effective to dissolve the germanium-containing compound in the liquid. The acidity of the resulting liquid mixture is increased under conditions effective to vaporize the germanium-containing compound. The vaporized germanium-containing compound is contacted with one or more aqueous solutions under conditions effective to dissolve and precipitate the germanium-containing compound in at least one of the one or more aqueous solutions, and the resulting precipitate is separated from the at least one of the one or more aqueous solutions. The methods described herein are particularly well suited for recovering germanium from the waste gases produced during optical waveguide manufacturing processes. Germanium recovered by this method can thereafter be used in the production of semiconductors, optical waveguide fibers and optical components.
摘要翻译：公开了一种用于从气体混合物中回收锗的方法，所述气体混合物包括蒸气或颗粒形式的含锗化合物，蒸汽形式的含酸化合物和水蒸气。在有效溶解含锗化合物的液体中的条件下，气态混合物与含有液体的液体接触。所得液体混合物的酸度在有效蒸发含锗化合物的条件下增加。蒸发的含锗化合物在有效溶解和沉淀至少一种一种或多种水溶液中的含锗化合物的条件下与一种或多种水溶液接触，并将所得沉淀物从至少一种一种或多种水溶液。本文描述的方法特别适用于从光波导制造过程中产生的废气中回收锗。然后通过该方法回收的锗可以用于半导体，光波导纤维和光学部件的制造。

2. 发明授权

US06597848B1 Dispersion compensating fiber 失效
标题翻译：色散补偿光纤
公开(公告)号：US06597848B1
公开(公告)日：2003-07-22
申请号：US09558649
申请日：2000-04-26
申请人： George E. Berkey , Lei Jiang , Dale R. Powers , V. Srikant
发明人： George E. Berkey , Lei Jiang , Dale R. Powers , V. Srikant
IPC分类号： G02B618
CPC分类号： G02B6/03688 , C03B37/01413 , C03B37/01446 , C03B2201/12 , C03B2201/31 , C03B2203/22 , C03B2203/23 , C03B2203/26 , C03B2203/36 , C03B2207/36 , G02B6/02261 , G02B6/03677
摘要： Disclosed is a dispersion compensating optical fiber that includes a core surrounded by a cladding layer of refractive index nCL. The core includes at least three radially adjacent regions, a central core region, a moat region having a refractive index nM that is sufficiently lower than nCL such that &Dgr;M≦−0.4%, and a ring region. As the ring region exhibits sufficiently high refractive index at a sufficiently long distance from the outer edge of the moat region, the fiber can exhibit low values of negative dispersion slope at low values of negative dispersion and yet exhibit good bending loss. This ring region is also capable of imparting to the fiber a relatively high cutoff wavelength, so that the present invention is particularly well suited for use in L-band systems. A particularly suitable fiber has an index profile in which that part of the ring region at the transition between the moat and the ring region has a refractive index such that its delta value is close to zero. Also disclosed is a method of forming the fiber of the present invention.
摘要翻译：公开了一种色散补偿光纤，其包括由折射率nCL的包覆层包围的芯。芯包括至少三个径向相邻的区域，中心芯区域，具有足够低于nCL的折射率nM的护城河区域，使得DELTAM <= -0.4％，以及环形区域。由于环形区域在距离护城河区域的外边缘足够长的距离处呈现足够高的折射率，所以在低分散负值下，纤维可以表现出低的负色散斜率值，并表现出良好的弯曲损耗。该环形区域还能够赋予纤维相当高的截止波长，使得本发明特别适用于L波段系统。特别合适的纤维具有折射率分布，其中在护环和环区之间的转变处的环区的那部分具有折射率使得其δ值接近于零。还公开了形成本发明的纤维的方法。

3. 发明授权

US5078092A Flash vaporizer system for use in manufacturing optical waveguide fiber 失效
标题翻译：用于制造光波导光纤的闪蒸蒸发器系统
公开(公告)号：US5078092A
公开(公告)日：1992-01-07
申请号：US456118
申请日：1989-12-22
申请人： A. Joseph Antos , Michael S. Dobbins , Victor E. Olson, III , Dale R. Powers , Francis W. Voorhees
发明人： A. Joseph Antos , Michael S. Dobbins , Victor E. Olson, III , Dale R. Powers , Francis W. Voorhees
IPC分类号： B01D1/22 , C03B37/014 , C03B37/018 , C23C14/24 , C23C16/44 , C23C16/448
CPC分类号： C03B37/01413 , C23C16/4402 , C23C16/4481 , C03B2201/42 , C03B2207/85 , C03B2207/88
摘要： A system for delivering a liquid reactant at high flow rates to an oxidation/flame hydrolysis glass soot deposition site. A first liquid only reactant is delivered to a flash vaporization chamber to form a thin film and mixed with oxygen after vaporization. Additional vaporized reactants are thereafter mixed with the vaporized first liquid prior to delivery to an oxidation/flame hydrolysis burner to form a glass soot outer cladding layer on a soot preform. The soot preform is subsequently fused to form a high quality glass blank for drawing into optical fiber.

4. 发明授权

US4639079A Optical fiber preform and method 失效
标题翻译：光纤预制棒和方法
公开(公告)号：US4639079A
公开(公告)日：1987-01-27
申请号：US776523
申请日：1985-10-28
申请人： Dale R. Powers
发明人： Dale R. Powers
IPC分类号： C03B37/014 , G02B6/22
CPC分类号： C03B37/014
摘要： A porous glass optical waveguide preform is formed by depositing a coating of glass particulate material on the lateral surface of a core which may be a porous glass body continuously produced by the axial deposition of glass particles. The core rotates and moves longitudinally in one direction with respect to two flame hydrolysis burners which emit streams of glass particles having different compositions. In addition, the two burners reciprocatingly move with respect to a portion of the length of the core. The speed of each burner varies as it traverses along its path of reciprocating motion. The thickness of the layer produced by a burner at a given point is inversely related to the speed of the burner as it passes that point. The layers formed by the completion of a single traverse by both burners combine to form a conically-shaped layer, the composition of which varies from the base toward the apex thereof. The conically-shaped layer, which are adjacently located longitudinally along the preform, combine to form a cylindrically-shaped portion of the preform.
摘要翻译：通过在芯的侧表面上沉积玻璃颗粒材料的涂层来形成多孔玻璃光波导预制件，所述芯的侧表面可以是通过玻璃颗粒的轴向沉积连续产生的多孔玻璃体。核心相对于发射具有不同组成的玻璃颗粒的两个火焰水解燃烧器在一个方向上纵向移动和纵向移动。此外，两个燃烧器相对于芯的长度的一部分往复运动。每个燃烧器的速度随着其往复运动的路径而变化。燃烧器在给定点产生的层的厚度与通过该点时燃烧器的速度成反比。通过由两个燃烧器完成单个横动而形成的层组合形成锥形层，其组成从基部向其顶点变化。沿着预成型件纵向相邻定位的锥形层结合形成预成型件的圆柱形部分。

5. 发明授权

US4125388A Method of making optical waveguides 失效
标题翻译：制造光波导的方法
公开(公告)号：US4125388A
公开(公告)日：1978-11-14
申请号：US877514
申请日：1978-02-13
申请人： Dale R. Powers
发明人： Dale R. Powers
IPC分类号： C03B32/00 , C03B37/014 , C03B37/02
CPC分类号： C03B37/01446 , C03B32/00 , C03B2201/10 , C03B2201/28 , C03B2201/30 , C03B2201/31 , C03B2201/32 , C03B2201/34 , C03B2201/40 , C03B2201/42 , Y10S65/90
摘要： A method of making low loss glass optical waveguides, wherein at least one coating of glass soot is deposited by the flame hydrolysis process on a starting member. The starting member is removed from the coating material or glass soot preform leaving an aperture therein, and a tube is secured to one end of the preform. While the preform is heated to its consolidation termperature, an atmosphere including a drying agent flows from the tube into the aperture and through the porous preform, thereby removing water from the preform while the soot is consolidated to form a dense glass article. The tube can be removed, and the resultant dense glass article can be drawn into an optical waveguide fiber.
摘要翻译：一种制造低损耗玻璃光波导的方法，其中玻璃烟灰的至少一个涂层通过火焰水解过程沉积在起始构件上。起始构件从涂层材料或玻璃烟炱预制件中移除，在其中留下孔，并且管固定到预成型件的一端。当将预成型件加热至其固化温度时，包括干燥剂的气氛从管流入孔并通过多孔预型件，从而从烟炱中除去水，同时烟炱被固结形成致密的玻璃制品。可以除去管，并将所得的致密玻璃制品拉入光波导纤维中。

6. 发明授权

US06810197B2 Isotopically altered optical fiber 失效
标题翻译：同位素改变的光纤
公开(公告)号：US06810197B2
公开(公告)日：2004-10-26
申请号：US10322148
申请日：2002-12-18
申请人： Douglas C. Allan , John T. Brown , Lisa C. Chacon , Adam J. G. Ellison , James C. Fajardo , Stuart Gray , Keith L. House , Karl W. Koch, III , Dale R. Powers , James A. West
发明人： Douglas C. Allan , John T. Brown , Lisa C. Chacon , Adam J. G. Ellison , James C. Fajardo , Stuart Gray , Keith L. House , Karl W. Koch, III , Dale R. Powers , James A. West
IPC分类号： G02B600
CPC分类号： C03C13/045 , C03B37/01413 , C03B37/01446 , C03B37/01807 , C03B37/01823 , C03B37/01853 , C03B2201/20 , C03B2201/22 , C03B2201/31 , C03B2203/22 , C03B2207/30 , C03B2207/36 , C03C4/0042 , C03C13/046 , G02B6/02 , G02B6/02228 , G02B6/02271 , G02B6/03644 , G02B6/03677 , G02B6/03694
摘要： An isotopically-altered, silica based optical fiber is provided having lower losses, broader bandwidth, and broader Raman gain spectrum characteristics than conventional silica-based fiber. A heavier, less naturally abundant isotope of silicon or oxygen is substituted for a lighter, more naturally abundant isotope to shift the infrared absorption to a slightly longer wavelength. In one embodiment, oxygen-18 is substituted for the much more naturally abundant oxygen-16 at least in the core region of the fiber. The resulting isotopically-altered fiber has a minimum loss of 0.044 dB/km less than conventional fiber, and a bandwidth that is 17 percent broader for a loss range between 0.044-0.034 dB/km. The fiber may be easily manufactured with conventional fiber manufacturing equipment by way of a plasma chemical vapor deposition technique. When a 50 percent substitution of oxygen-18 for oxygen-16 is made in the core region of the fiber, the Raman gain spectrum is substantially broadened.
摘要翻译：提供了一种同位素改性的二氧化硅基光纤，其比传统的二氧化硅基光纤具有更低的损耗，更宽的带宽和更广泛的拉曼增益光谱特性。更重，更不自然丰富的硅或氧的同位素代替较轻的，更自然的丰富的同位素，以将红外吸收转移到稍长的波长。在一个实施方案中，氧-18至少在纤维的核心区域中替代天然丰富的氧-16。所得到的同位素改变的光纤比常规光纤的损耗最小为0.044 dB / km，对于0.044-0.034 dB / km之间的损耗范围，宽带宽为17％。纤维可以通过等离子体化学气相沉积技术容易地用常规纤维制造设备制造。当在纤维的纤芯区域中进行氧-16取代氧-16的50％时，拉曼增益谱显着扩大。

7. 发明授权

US06378337B1 Method for producing bulk fused silica 失效
标题翻译：块状熔融二氧化硅的制造方法
公开(公告)号：US06378337B1
公开(公告)日：2002-04-30
申请号：US09663033
申请日：2000-09-15
申请人： John T. Brown , Michael S. Dobbins , Christine E. Heckle , Robert E. McLay , Mahendra K. Misra , Dale R. Powers , Michael H. Wasilewski
发明人： John T. Brown , Michael S. Dobbins , Christine E. Heckle , Robert E. McLay , Mahendra K. Misra , Dale R. Powers , Michael H. Wasilewski
IPC分类号： C03B2000
CPC分类号： C03B19/1423 , C03B19/1415 , C03B2201/03 , C03B2201/07 , C03B2201/21 , C03B2201/23 , C03B2207/06 , C03B2207/12 , C03B2207/20 , C03B2207/22 , C03B2207/32 , C03B2207/36
摘要： A method for preparing high-purity, bulk fused silica includes supplying silane gas, a gaseous fuel, and oxygen gas to a combustion burner. Silica particles are formed by passing the silane gas into a flame formed by the combustion reaction of the gaseous fuel with the oxygen gas while maintaining the ratio of the flow rate of the gaseous fuel to the flow rate of the silane gas no less than twelve and the ratio of the flow rate of the gaseous fuel to the flow rate of the oxygen gas no less than three. The silica particles formed are immediately deposited onto a hot bait to form a boule.
摘要翻译：制备高纯度体积熔融二氧化硅的方法包括向燃烧器供给硅烷气体，气体燃料和氧气。通过使硅烷气体通过气体燃料与氧气的燃烧反应形成的火焰中，同时保持气体燃料的流量与硅烷气体的流量的比率不小于12而形成二氧化硅颗粒，气体燃料的流量与氧气的流量的比率不小于3。形成的二氧化硅颗粒立即沉积在热诱饵上以形成一个原子棒。

8. 发明授权

US5203897A Method for making a preform doped with a metal oxide 失效
标题翻译：用于制备掺杂有金属氧化物的预成型体的方法
公开(公告)号：US5203897A
公开(公告)日：1993-04-20
申请号：US856454
申请日：1992-03-24
申请人： Dale R. Powers , Kenneth H. Sandhage , Michael J. Stalker
发明人： Dale R. Powers , Kenneth H. Sandhage , Michael J. Stalker
IPC分类号： C03B37/014
CPC分类号： C03B37/0142 , C03B37/01413 , C03B2201/31 , C03B2203/24 , C03B2203/26 , C03B2207/06 , C03B2207/12 , C03B2207/20 , C03B2207/36
摘要： An improved method for making preforms by vapor deposition soot laydown processes is provided wherein an oxidizing atmosphere is used during at least part of the laydown process, e.g., during the laydown of the center portion of the preform. The use of such an atmosphere has been found to result in enhanced dopant capture, reduced axial trends, and an overall stabilization of the laydown process. A method for selecting burner flows which optimize the laydown process is also provided.
摘要翻译：提供了一种通过气相沉积烟灰沉积工艺制备预制件的改进方法，其中在至少部分沉积过程中使用氧化气氛，例如在预成型件的中心部分的放置期间。已经发现使用这种气氛导致增强的掺杂剂捕获，降低的轴向趋势以及沉积过程的整体稳定性。还提供了一种选择优化沉积过程的燃烧器流的方法。

9. 发明授权

US06904772B2 Method of making a glass preform for low water peak optical fiber 有权
标题翻译：制造低水峰光纤玻璃预制棒的方法
公开(公告)号：US06904772B2
公开(公告)日：2005-06-14
申请号：US10023291
申请日：2001-12-14
申请人： George E. Berkey , Dana C. Bookbinder , Richard M. Fiacco , Dale R. Powers
发明人： George E. Berkey , Dana C. Bookbinder , Richard M. Fiacco , Dale R. Powers
IPC分类号： C03B37/014 , C03C13/04 , C03C25/60 , G02B6/02 , C03B37/027
CPC分类号： C03C25/607 , C03B37/01446 , C03B37/0146 , C03B37/01486 , C03B2201/075 , C03B2201/22 , C03B2201/31 , C03C3/06 , C03C13/045 , C03C13/047 , C03C2201/21 , C03C2201/22 , C03C2203/54 , G02B6/02
摘要： Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be hydrogen resistant, i.e. exhibit low hydrogen aged attenuation. A low water peak, hydrogen resistant optical waveguide fiber is disclosed which exhibits an optical attenuation at a wavelength of about 1383 nm which is less than or equal to an optical attenuation exhibited at a wavelength of about 1310 nm.
摘要翻译：具有低水峰的光波导纤维以及光波导纤维预制件以及制造出低水峰值和/或低氢老化衰减光波导纤维的光波导纤维预制棒的方法，包括通过OVD制造的光波导纤维和预制棒。纤维可以是耐氢性的，即表现出低氢老化衰减。公开了一种低水峰，耐氢光波导纤维，其在约1383nm的波长处表现出光衰减，其小于或等于在约1310nm的波长处显示的光衰减。

10. 发明授权

US06477305B1 Low water peak optical waveguide and method of manufacturing same 有权
标题翻译：低水峰光波导及其制造方法
公开(公告)号：US06477305B1
公开(公告)日：2002-11-05
申请号：US09547598
申请日：2000-04-11
申请人： George E. Berkey , Dana C. Bookbinder , Richard M. Fiacco , Cynthia B. Giroux , Daniel W. Hawtof , Dale R. Powers , V. Srikant
发明人： George E. Berkey , Dana C. Bookbinder , Richard M. Fiacco , Cynthia B. Giroux , Daniel W. Hawtof , Dale R. Powers , V. Srikant
IPC分类号： G02B602
CPC分类号： C03B37/01486 , C03B37/0124 , C03B37/01446 , C03B37/01473 , C03B2201/04 , C03B2201/075 , C03B2201/22 , C03B2201/31 , C03C3/06 , C03C13/047 , C03C2201/22 , C03C2203/54 , G02B6/02
摘要： A cylindrical glass body having a low water content centerline region and method of manufacturing such a cylindrical glass body for use in the manufacture of optical waveguide fiber is disclosed. The centerline region of the cylindrical glass body has a water content sufficiently low such that an optical waveguide fiber made from the cylindrical glass body of the present invention exhibits an optical attenuation of less than about 0.35 dB/km, and preferably less than about 0.31 dB/km at a measured wavelength of 1380 nm. A low water content plug used in the manufacture of such a cylindrical glass body, an optical waveguide fiber having a low water peak, and an optical fiber communication system incorporating such an optical waveguide fiber is also disclosed.
摘要翻译：公开了一种具有低含水率中心线区域的圆柱形玻璃体及其制造用于制造光波导纤维的圆柱形玻璃体的方法。圆柱形玻璃体的中心线区域的水含量足够低，使得由本发明的圆柱形玻璃体制成的光波导纤维的光衰减小于约0.35dB / km，优选小于约0.31dB / km，测量波长为1380 nm。还公开了用于制造这种圆柱形玻璃体的低含水量塞子，具有低水峰的光波导纤维和包含这种光波导纤维的光纤通信系统。

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