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    Solution doping method of making an optical amplifying fiber
    151.
    发明授权
    Solution doping method of making an optical amplifying fiber 失效
    制造光放大光纤的溶液掺杂方法

    公开(公告)号：US06408652B1

    公开(公告)日：2002-06-25

    申请号：US09299666

    申请日：1999-04-27

    Applicant: Koji Okamura ,  Keiko Takeda

    Inventor： Koji Okamura ,  Keiko Takeda

    IPC: C03B37027

    CPC classification number: G02B6/02042 ,  C03B37/01211 ,  C03B37/01807 ,  C03B37/01838 ,  C03B37/01861 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/42 ,  C03B2203/29 ,  C03C13/045 ,  H01S3/06708 ,  H01S3/06729

    Abstract: An optical amplifying fiber including a clad, a first core provided inside the clad and containing Ge, a second core provided inside the first core and containing Er and Al, and a third core provided inside the second core and containing Ge. The second core has a refractive index higher than that of the clad, and the first and third cores have refractive indexes each of which is higher than that of the second core. Since the third core having the high refractive index is provided at a central portion, it is possible to make smaller a mode field diameter and hence to improve a conversion efficiency of pumping light into signal light. Further, since the second core contains Al as an amplification band width increasing element, it is possible to sufficiently ensure a wide amplification band width.

    Abstract translation: 一种光学放大光纤，包括：包层，设置在所述包层内并包含Ge的第一芯，设置在所述第一芯内并包含Er和Al的第二芯和设置在所述第二芯内并且包含Ge的第三芯。 第二芯的折射率高于包层的折射率，第一和第三芯具有高于第二芯的折射率。 由于具有高折射率的第三纤芯设置在中心部分，所以可以使模场直径变小，从而提高泵浦光转换为信号光的转换效率。 此外，由于第二芯包含Al作为放大带宽增加元件，因此可以充分确保宽的放大带宽。

    Method for making glasses containing rare earth fluorides by precipitating solution doped compounds
    152.
    发明授权
    Method for making glasses containing rare earth fluorides by precipitating solution doped compounds 失效
    通过沉淀溶液掺杂化合物制备含稀土氟化物的玻璃的方法

    公开(公告)号：US06401494B2

    公开(公告)日：2002-06-11

    申请号：US09915781

    申请日：2001-07-26

    Applicant: Huailiang Wei

    Inventor： Huailiang Wei

    IPC: C03C1702

    CPC classification number: C03C3/06 ,  C03B37/01433 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/50 ,  C03B2201/54 ,  C03C23/0095 ,  C03C2201/12 ,  C03C2201/31 ,  C03C2201/34 ,  C03C2203/50

    Abstract: A method that provides a new way to embed rare earth fluorides into silicate (or germania-doped silica) glasses by means of solution chemistry. Embedding rare earth fluorides into a silicate (or germania-doped silica) glass comprises the following steps. First, form a porous silicate core preform. Second, submerge the preform into an aqueous solution of rare earth ions. Third, remove the preform from the solution and wash the outside surfaces of the preform. Fourth, submerge the preform into an aqueous solution of a fluorinating agent to precipitate rare earth trifluorides from the solution and deposit in the pores or on the wall of the preform. This is followed by drying.

    Abstract translation: 一种通过溶液化学提供将稀土氟化物嵌入硅酸盐（或氧化锗掺杂二氧化硅）玻璃的新方法的方法。 将稀土氟化物嵌入硅酸盐（或掺锗二氧化硅）玻璃中包括以下步骤。 首先，形成多孔硅酸盐芯预制件。 第二，将预成型件浸入稀土离子的水溶液中。 第三，从溶液中取出预型件并洗涤预成型件的外表面。 第四，将预制件浸入氟化剂的水溶液中以从溶液中沉淀出稀土三氟化物，并沉积在预制件的孔或壁上。 然后干燥。

    Method of making optical waveguide devices using perchloryl fluoride to make soot
    154.
    发明授权
    Method of making optical waveguide devices using perchloryl fluoride to make soot 失效
    使用高氯氟化物制造光波导器件来制造烟灰的方法

    公开(公告)号：US6109065A

    公开(公告)日：2000-08-29

    申请号：US65961

    申请日：1998-04-24

    Applicant: Robert Michael Atkins ,  Robert Scott Windeler

    Inventor： Robert Michael Atkins ,  Robert Scott Windeler

    IPC: C03B8/04 ,  C03B37/018 ,  G02B6/00 ,  G02B6/02 ,  C03B37/027

    CPC classification number: C03B37/01807 ,  C03B37/01838 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/40

    Abstract: Applicants have determined that much of the nonuniformity in solution doped preforms is due to nonuniformity of the soot layer caused by the high temperature necessary for complete reaction, and that MCVD fabrication using reaction temperature lowering gases such as nitrous oxide (N.sub.2 O) can produce more uniform soot layers. The conventional oxygen/reactant gas mixture presents a very small temperature window in which a uniform silica soot layer can be deposited without sintering. If the temperature in oxygen is too low, SiCl.sub.4 will not react completely and silicon oxychlorides will form. This degrades the soot layer and makes it unusable. If the temperature is too high the soot layer begins to sinter, decreasing the surface area and porosity. Adding a reaction temperature lowering gas lowers the reaction temperature and enables deposition of soot on the tube wall at a temperature substantially lower than the sintering temperature. This results in a more uniform, porous soot layer along the length of the preform and from one preform to another; and, in turn, the greater uniformity permits more uniform solution doping.

    Abstract translation: 申请人已经确定了溶液掺杂预制件中的大部分不均匀性是由于完全反应所需的高温引起的烟灰层的不均匀性，并且使用反应温度降低气体如一氧化二氮（N 2 O）的MCVD制造可以产生更均匀的 烟灰层。 常规的氧气/反应物气体混合物呈现非常小的温度窗口，其中可沉积均匀的二氧化硅烟灰层而不烧结。 如果氧气中的温度太低，SiCl4将不会完全反应并形成硅氧氯化物。 这会降低烟灰层，使其不可用。 如果温度太高，烟灰层开始烧结，减少表面积和孔隙率。 添加反应降温气体降低了反应温度，并且能够以基本上低于烧结温度的温度将烟灰沉积在管壁上。 这导致沿着预成型件的长度和从一个预成型件到另一个预制件的更均匀的多孔的烟灰层; 反过来，更大的均匀性允许更均匀的溶液掺杂。

    Erbium-doped silica optical fiber preform
    156.
    发明授权
    Erbium-doped silica optical fiber preform 失效
    掺铒二氧化硅光纤预制棒

    公开(公告)号：US5526459A

    公开(公告)日：1996-06-11

    申请号：US402592

    申请日：1995-03-13

    Applicant: Daiichirou Tanaka ,  Akira Wada ,  Tetsuya Sakai ,  Tetsuo Nozawa ,  Ryozo Yamauchi

    Inventor： Daiichirou Tanaka ,  Akira Wada ,  Tetsuya Sakai ,  Tetsuo Nozawa ,  Ryozo Yamauchi

    IPC: C03B8/04 ,  C03B20/00 ,  C03B37/014 ,  C03C13/04 ,  G02B6/00

    CPC classification number: C03B37/01433 ,  C03C13/045 ,  C03B2201/36

    Abstract: A manufacturing method for erbium doped silica, having a soot formation process, in which a silica glass soot is deposited on a seed rod for forming a soot preform in a porous state on the seed rod, a dopant impregnation process, wherein the soot preform is impregnated with at least an erbium compound, and a preform formation process, wherein this soot preform impregnated with a dopant is heated and rendered transparent. The dopant impregnation process is provided with an operation in which the soot preform obtained in the soot formation process is dipped in a solution containing an erbium compound, an aluminum compound, and a phosphorus compound; this is then desiccated, and soot preform which is impregnated with the erbium compound, the aluminum compound, and the phosphorus compound is obtained.

    Abstract translation: 一种铒掺杂二氧化硅的制造方法，其具有烟炱形成方法，其中将硅石烟炱沉积在用于在种棒上形成多孔状态的烟炱预型体的种棒上，掺杂剂浸渍方法，其中所述烟炱预型体为 用至少铒化合物浸渍，以及预成型物形成工艺，其中浸渍有掺杂剂的该烟炱预制件被加热并变得透明。 掺杂剂浸渍方法具有将烟灰形成工艺中获得的烟灰预制件浸入含有铒化合物，铝化合物和磷化合物的溶液中的操作; 然后将其干燥，得到浸渍有铒化合物，铝化合物和磷化合物的烟炱预制品。

    Method of forming a fiber preform with dopants dissolved in a liquid
    158.
    发明授权
    Method of forming a fiber preform with dopants dissolved in a liquid 失效
    用溶解在液体中的掺杂剂形成纤维预型体的方法

    公开(公告)号：US5198270A

    公开(公告)日：1993-03-30

    申请号：US789734

    申请日：1991-11-08

    Applicant: Matthew J. Andrejco ,  Brian G. Bagley

    Inventor： Matthew J. Andrejco ,  Brian G. Bagley

    IPC: C03B37/016 ,  C03B37/018

    CPC classification number: C03B37/01838 ,  C03B37/016 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/22

    Abstract: A method of forming an optical fiber. A solution (12) is prepared in which are dissolved both a ladder siloxane and one or more dopants which are to be incorporated into the final silica or silicate glass. The solution is drawn into the interior of a silica tube (10) and is left as a coating (26) on the inside wall. The solvent is evaporated, and the rigid coating is cured at 150.degree. C. The filling and curing process may be repeated for multiple layers. The cured coating is then oxidized and fused into doped silica. The resultant tube preform is collapsed and drawn into a fiber. The method allows the introduction of nearly arbitrary constituents into the silica, including glass-forming elements and low-level dopants. The core-cladding interface is improved if a layer of glass-forming soot particles (28) is first deposited and the liquid is soaked into and over the soot.

    Abstract translation: 一种形成光纤的方法。 制备溶液（12），其中溶解有梯形硅氧烷和一种或多种掺入到最后的二氧化硅或硅酸盐玻璃中的掺杂剂。 溶液被吸入石英管（10）的内部，并作为涂层（26）留在内壁上。 蒸发溶剂，刚性涂层在150℃下固化。填充和固化过程可以重复多层。 然后将固化的涂层氧化并熔融成掺杂的二氧化硅。 所得的管预成型件被折叠并且被拉伸成纤维。 该方法允许将几乎任意的成分引入到二氧化硅中，包括玻璃形成元件和低级掺杂剂。 如果首先沉积一层玻璃形成的烟灰颗粒（28）并且将液体浸泡在烟灰中和上方，则核 - 包层界面得到改善。

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